WO1999051704A8 - Injection molded degradable casing perforation ball sealers - Google Patents

Injection molded degradable casing perforation ball sealers

Info

Publication number
WO1999051704A8
WO1999051704A8 PCT/US1999/007499 US9907499W WO9951704A8 WO 1999051704 A8 WO1999051704 A8 WO 1999051704A8 US 9907499 W US9907499 W US 9907499W WO 9951704 A8 WO9951704 A8 WO 9951704A8
Authority
WO
WIPO (PCT)
Prior art keywords
ball
injection molded
wellbore fluids
casing perforation
sealer
Prior art date
Application number
PCT/US1999/007499
Other languages
French (fr)
Other versions
WO1999051704A1 (en
Inventor
Noel David Ischy
Craig Steve Fox
Original Assignee
Noel David Ischy
Craig Steve Fox
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Noel David Ischy, Craig Steve Fox filed Critical Noel David Ischy
Priority to AU34730/99A priority Critical patent/AU3473099A/en
Priority to CA002320949A priority patent/CA2320949C/en
Priority to EP99916401A priority patent/EP1078022A4/en
Publication of WO1999051704A1 publication Critical patent/WO1999051704A1/en
Priority to NO20004589A priority patent/NO20004589L/en
Publication of WO1999051704A8 publication Critical patent/WO1999051704A8/en

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B33/00—Sealing or packing boreholes or wells
    • E21B33/10—Sealing or packing boreholes or wells in the borehole
    • E21B33/13—Methods or devices for cementing, for plugging holes, crevices, or the like
    • E21B33/138—Plastering the borehole wall; Injecting into the formation
    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/25—Methods for stimulating production
    • E21B43/26—Methods for stimulating production by forming crevices or fractures
    • E21B43/261—Separate steps of (1) cementing, plugging or consolidating and (2) fracturing or attacking the formation

Abstract

A degradable ball sealer for use in the oil and gas industry is disclosed. The ball seal comprises a particular composition of matter and injection molding technique that provides a ball seal which will dissolve in stimulation or wellbore fluids after stimulation operations are complete. In use, the surface of the ball sealer softens slightly assuring a solid seal between the ball and the casing perforation. The composition when dissolved into wellbore fluids does not pose a hazard and disperses well in aqueous based wellbore fluids. The same composition, made into a larger ball, may be used as a tubing sealer for pressure testing.
PCT/US1999/007499 1998-04-06 1999-04-05 Injection molded degradable casing perforation ball sealers WO1999051704A1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
AU34730/99A AU3473099A (en) 1998-04-06 1999-04-05 Injection molded degradable casing perforation ball sealers
CA002320949A CA2320949C (en) 1998-04-06 1999-04-05 Injection molded degradable casing perforation ball sealers
EP99916401A EP1078022A4 (en) 1998-04-06 1999-04-05 Injection molded degradable casing perforation ball sealers
NO20004589A NO20004589L (en) 1998-04-06 2000-09-14 Spray-tested, degradable ball seal for feeding pipe perforations

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/055,549 US5990051A (en) 1998-04-06 1998-04-06 Injection molded degradable casing perforation ball sealers
US09/055,549 1998-04-06

Publications (2)

Publication Number Publication Date
WO1999051704A1 WO1999051704A1 (en) 1999-10-14
WO1999051704A8 true WO1999051704A8 (en) 2001-08-02

Family

ID=21998598

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/007499 WO1999051704A1 (en) 1998-04-06 1999-04-05 Injection molded degradable casing perforation ball sealers

Country Status (6)

Country Link
US (1) US5990051A (en)
EP (1) EP1078022A4 (en)
AU (1) AU3473099A (en)
CA (1) CA2320949C (en)
NO (1) NO20004589L (en)
WO (1) WO1999051704A1 (en)

Families Citing this family (95)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9916513D0 (en) 1999-07-15 1999-09-15 Churchill Andrew P Bypass tool
GB2373802B (en) 1999-11-16 2004-03-17 Schlumberger Technology Corp Downhole valve and technique to seal a bore of a body
US6394184B2 (en) * 2000-02-15 2002-05-28 Exxonmobil Upstream Research Company Method and apparatus for stimulation of multiple formation intervals
DZ3387A1 (en) 2000-07-18 2002-01-24 Exxonmobil Upstream Res Co PROCESS FOR TREATING MULTIPLE INTERVALS IN A WELLBORE
AU2002344808A1 (en) 2001-06-19 2003-01-02 Exxonmobil Upstream Research Company Perforating gun assembly for use in multi-stage stimulation operations
US9109429B2 (en) 2002-12-08 2015-08-18 Baker Hughes Incorporated Engineered powder compact composite material
US9079246B2 (en) 2009-12-08 2015-07-14 Baker Hughes Incorporated Method of making a nanomatrix powder metal compact
US8403037B2 (en) 2009-12-08 2013-03-26 Baker Hughes Incorporated Dissolvable tool and method
US9682425B2 (en) 2009-12-08 2017-06-20 Baker Hughes Incorporated Coated metallic powder and method of making the same
US9101978B2 (en) 2002-12-08 2015-08-11 Baker Hughes Incorporated Nanomatrix powder metal compact
US8327931B2 (en) 2009-12-08 2012-12-11 Baker Hughes Incorporated Multi-component disappearing tripping ball and method for making the same
US20040231845A1 (en) * 2003-05-15 2004-11-25 Cooke Claude E. Applications of degradable polymers in wells
US20090107684A1 (en) 2007-10-31 2009-04-30 Cooke Jr Claude E Applications of degradable polymers for delayed mechanical changes in wells
US7093664B2 (en) * 2004-03-18 2006-08-22 Halliburton Energy Services, Inc. One-time use composite tool formed of fibers and a biodegradable resin
US7168494B2 (en) * 2004-03-18 2007-01-30 Halliburton Energy Services, Inc. Dissolvable downhole tools
US7353879B2 (en) * 2004-03-18 2008-04-08 Halliburton Energy Services, Inc. Biodegradable downhole tools
US7380600B2 (en) * 2004-09-01 2008-06-03 Schlumberger Technology Corporation Degradable material assisted diversion or isolation
US7775278B2 (en) * 2004-09-01 2010-08-17 Schlumberger Technology Corporation Degradable material assisted diversion or isolation
US7275596B2 (en) 2005-06-20 2007-10-02 Schlumberger Technology Corporation Method of using degradable fiber systems for stimulation
US20070017679A1 (en) * 2005-06-30 2007-01-25 Wolf John C Downhole multi-action jetting tool
US7647964B2 (en) * 2005-12-19 2010-01-19 Fairmount Minerals, Ltd. Degradable ball sealers and methods for use in well treatment
US20080257549A1 (en) 2006-06-08 2008-10-23 Halliburton Energy Services, Inc. Consumable Downhole Tools
US20070284114A1 (en) 2006-06-08 2007-12-13 Halliburton Energy Services, Inc. Method for removing a consumable downhole tool
NO20063074L (en) * 2006-07-03 2008-01-04 Rune Freyer Method and apparatus for counteracting the functioning of a valve
US7490667B2 (en) * 2006-10-02 2009-02-17 Fairmount Minerals, Inc. Proppants with soluble composite coatings
US20080202764A1 (en) 2007-02-22 2008-08-28 Halliburton Energy Services, Inc. Consumable downhole tools
US8235102B1 (en) 2008-03-26 2012-08-07 Robertson Intellectual Properties, LLC Consumable downhole tool
US8327926B2 (en) 2008-03-26 2012-12-11 Robertson Intellectual Properties, LLC Method for removing a consumable downhole tool
US8006760B2 (en) 2008-04-10 2011-08-30 Halliburton Energy Services, Inc. Clean fluid systems for partial monolayer fracturing
US8936085B2 (en) * 2008-04-15 2015-01-20 Schlumberger Technology Corporation Sealing by ball sealers
US9212535B2 (en) * 2008-04-15 2015-12-15 Schlumberger Technology Corporation Diversion by combining dissolvable and degradable particles and fibers
US8678081B1 (en) 2008-08-15 2014-03-25 Exelis, Inc. Combination anvil and coupler for bridge and fracture plugs
US8267177B1 (en) 2008-08-15 2012-09-18 Exelis Inc. Means for creating field configurable bridge, fracture or soluble insert plugs
US8561696B2 (en) 2008-11-18 2013-10-22 Schlumberger Technology Corporation Method of placing ball sealers for fluid diversion
BRPI0922039A2 (en) * 2008-11-20 2015-12-22 Brinker Technology Ltd sealing method and equipment.
US8757260B2 (en) * 2009-02-11 2014-06-24 Halliburton Energy Services, Inc. Degradable perforation balls and associated methods of use in subterranean applications
US8960295B2 (en) 2009-04-24 2015-02-24 Chevron U.S.A. Inc. Fracture valve tools and related methods
US10240419B2 (en) 2009-12-08 2019-03-26 Baker Hughes, A Ge Company, Llc Downhole flow inhibition tool and method of unplugging a seat
US8573295B2 (en) 2010-11-16 2013-11-05 Baker Hughes Incorporated Plug and method of unplugging a seat
US8528633B2 (en) 2009-12-08 2013-09-10 Baker Hughes Incorporated Dissolvable tool and method
US9127515B2 (en) 2010-10-27 2015-09-08 Baker Hughes Incorporated Nanomatrix carbon composite
US9243475B2 (en) 2009-12-08 2016-01-26 Baker Hughes Incorporated Extruded powder metal compact
US9227243B2 (en) 2009-12-08 2016-01-05 Baker Hughes Incorporated Method of making a powder metal compact
US8425651B2 (en) 2010-07-30 2013-04-23 Baker Hughes Incorporated Nanomatrix metal composite
CA3221252A1 (en) 2010-02-18 2010-07-23 Ncs Multistage Inc. Downhole tool assembly with debris relief and method for using same
US8424610B2 (en) 2010-03-05 2013-04-23 Baker Hughes Incorporated Flow control arrangement and method
US8776884B2 (en) 2010-08-09 2014-07-15 Baker Hughes Incorporated Formation treatment system and method
US9090955B2 (en) 2010-10-27 2015-07-28 Baker Hughes Incorporated Nanomatrix powder metal composite
US8579023B1 (en) 2010-10-29 2013-11-12 Exelis Inc. Composite downhole tool with ratchet locking mechanism
US8631876B2 (en) 2011-04-28 2014-01-21 Baker Hughes Incorporated Method of making and using a functionally gradient composite tool
US9080098B2 (en) 2011-04-28 2015-07-14 Baker Hughes Incorporated Functionally gradient composite article
US8770276B1 (en) 2011-04-28 2014-07-08 Exelis, Inc. Downhole tool with cones and slips
US9139928B2 (en) 2011-06-17 2015-09-22 Baker Hughes Incorporated Corrodible downhole article and method of removing the article from downhole environment
US9707739B2 (en) 2011-07-22 2017-07-18 Baker Hughes Incorporated Intermetallic metallic composite, method of manufacture thereof and articles comprising the same
US8783365B2 (en) 2011-07-28 2014-07-22 Baker Hughes Incorporated Selective hydraulic fracturing tool and method thereof
US9833838B2 (en) 2011-07-29 2017-12-05 Baker Hughes, A Ge Company, Llc Method of controlling the corrosion rate of alloy particles, alloy particle with controlled corrosion rate, and articles comprising the particle
US9643250B2 (en) 2011-07-29 2017-05-09 Baker Hughes Incorporated Method of controlling the corrosion rate of alloy particles, alloy particle with controlled corrosion rate, and articles comprising the particle
US9057242B2 (en) 2011-08-05 2015-06-16 Baker Hughes Incorporated Method of controlling corrosion rate in downhole article, and downhole article having controlled corrosion rate
US9033055B2 (en) 2011-08-17 2015-05-19 Baker Hughes Incorporated Selectively degradable passage restriction and method
US9109269B2 (en) 2011-08-30 2015-08-18 Baker Hughes Incorporated Magnesium alloy powder metal compact
US9090956B2 (en) 2011-08-30 2015-07-28 Baker Hughes Incorporated Aluminum alloy powder metal compact
US9856547B2 (en) 2011-08-30 2018-01-02 Bakers Hughes, A Ge Company, Llc Nanostructured powder metal compact
US9643144B2 (en) 2011-09-02 2017-05-09 Baker Hughes Incorporated Method to generate and disperse nanostructures in a composite material
US9347119B2 (en) 2011-09-03 2016-05-24 Baker Hughes Incorporated Degradable high shock impedance material
US9133695B2 (en) 2011-09-03 2015-09-15 Baker Hughes Incorporated Degradable shaped charge and perforating gun system
US9187990B2 (en) 2011-09-03 2015-11-17 Baker Hughes Incorporated Method of using a degradable shaped charge and perforating gun system
US9284812B2 (en) 2011-11-21 2016-03-15 Baker Hughes Incorporated System for increasing swelling efficiency
US8857513B2 (en) 2012-01-20 2014-10-14 Baker Hughes Incorporated Refracturing method for plug and perforate wells
US9010416B2 (en) 2012-01-25 2015-04-21 Baker Hughes Incorporated Tubular anchoring system and a seat for use in the same
US9068428B2 (en) 2012-02-13 2015-06-30 Baker Hughes Incorporated Selectively corrodible downhole article and method of use
US8590616B1 (en) 2012-02-22 2013-11-26 Tony D. McClinton Caged ball fractionation plug
US8931559B2 (en) 2012-03-23 2015-01-13 Ncs Oilfield Services Canada, Inc. Downhole isolation and depressurization tool
US9605508B2 (en) 2012-05-08 2017-03-28 Baker Hughes Incorporated Disintegrable and conformable metallic seal, and method of making the same
US8997859B1 (en) 2012-05-11 2015-04-07 Exelis, Inc. Downhole tool with fluted anvil
US9528343B2 (en) * 2013-01-17 2016-12-27 Parker-Hannifin Corporation Degradable ball sealer
US9920606B2 (en) * 2013-07-31 2018-03-20 Schlumberger Technology Corporation Preparation method, formulation and application of chemically retarded mineral acid for oilfield use
US9796490B2 (en) 2013-10-24 2017-10-24 Schlumberger Technology Corporation Aqueous solution and method for use thereof
US9816339B2 (en) 2013-09-03 2017-11-14 Baker Hughes, A Ge Company, Llc Plug reception assembly and method of reducing restriction in a borehole
US9476287B2 (en) * 2013-11-05 2016-10-25 Schlumberger Technology Corporation Aqueous solution and method for use thereof
US10865465B2 (en) 2017-07-27 2020-12-15 Terves, Llc Degradable metal matrix composite
US11167343B2 (en) 2014-02-21 2021-11-09 Terves, Llc Galvanically-active in situ formed particles for controlled rate dissolving tools
WO2015127174A1 (en) 2014-02-21 2015-08-27 Terves, Inc. Fluid activated disintegrating metal system
CN105446793B (en) * 2014-08-28 2018-08-28 国际商业机器公司 The method and apparatus for migrating fictitious assets
US9910026B2 (en) 2015-01-21 2018-03-06 Baker Hughes, A Ge Company, Llc High temperature tracers for downhole detection of produced water
US10378303B2 (en) 2015-03-05 2019-08-13 Baker Hughes, A Ge Company, Llc Downhole tool and method of forming the same
US10378325B2 (en) * 2015-04-10 2019-08-13 Schlumberger Technology Corporation Aqueous retarded acid solution and methods for use thereof
US9845658B1 (en) 2015-04-17 2017-12-19 Albany International Corp. Lightweight, easily drillable or millable slip for composite frac, bridge and drop ball plugs
US10221637B2 (en) 2015-08-11 2019-03-05 Baker Hughes, A Ge Company, Llc Methods of manufacturing dissolvable tools via liquid-solid state molding
US20170159402A1 (en) * 2015-12-02 2017-06-08 Baker Hughes Incorporated Method of enhancing circulation during drill-out of a wellbore barrier using dissovable solid particulates
US10016810B2 (en) 2015-12-14 2018-07-10 Baker Hughes, A Ge Company, Llc Methods of manufacturing degradable tools using a galvanic carrier and tools manufactured thereof
CA3017486C (en) * 2016-06-13 2020-08-25 Halliburton Energy Services, Inc. Treatment isolation in restimulations with inner wellbore casing
US10760370B2 (en) 2016-12-16 2020-09-01 MicroPlug, LLC Micro frac plug
US10253590B2 (en) 2017-02-10 2019-04-09 Baker Hughes, A Ge Company, Llc Downhole tools having controlled disintegration and applications thereof
US10597965B2 (en) * 2017-03-13 2020-03-24 Baker Hughes, A Ge Company, Llc Downhole tools having controlled degradation
GB201707552D0 (en) * 2017-05-11 2017-06-28 Qinov8 Uk Sealing element

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3319716A (en) * 1965-10-21 1967-05-16 Halliburton Co Fluid loss additive for well fluids, composition and process
US3971852A (en) * 1973-06-12 1976-07-27 Polak's Frutal Works, Inc. Process of encapsulating an oil and product produced thereby
CA1069290A (en) * 1974-08-27 1980-01-08 Leroy L. Carney Oxazolidine friction reducing additives for aqueous drilling fluids
US4526695A (en) * 1981-08-10 1985-07-02 Exxon Production Research Co. Composition for reducing the permeability of subterranean formations
US4716964A (en) * 1981-08-10 1988-01-05 Exxon Production Research Company Use of degradable ball sealers to seal casing perforations in well treatment fluid diversion
US4387769A (en) * 1981-08-10 1983-06-14 Exxon Production Research Co. Method for reducing the permeability of subterranean formations
US4421902A (en) * 1982-09-30 1983-12-20 Rohm And Haas Company Alkyl, poly(oxyethylene) poly(carbonyloxyethylene) acrylate emulsion copolymers for thickening purposes
US4552909A (en) * 1984-09-26 1985-11-12 Genesco Inc. Thixotropic compositions comprising leather fibers and method for rendering polymeric compositions thixotropic
US5253709A (en) * 1990-01-29 1993-10-19 Conoco Inc. Method and apparatus for sealing pipe perforations
US5356149A (en) * 1992-12-23 1994-10-18 Kane Patrick E Injection molded water-soluble golf ball
US5302303A (en) * 1993-08-24 1994-04-12 Miles Inc. Storage stable isocyanate-reactive compositions for use in flame-retardent systems
IT1269406B (en) * 1993-10-15 1997-04-01 Giacomo Bandino Mixed tanning process based on titanium
US6150492A (en) * 1994-02-04 2000-11-21 Borden Chemical, Inc. Cross-catalyzed phenol-resorcinol adhesive
US5788184A (en) * 1997-01-04 1998-08-04 Eddy; Robert G. Aircraft passenger safety enhanced fuselage insulation blanket

Also Published As

Publication number Publication date
NO20004589D0 (en) 2000-09-14
CA2320949C (en) 2006-05-30
EP1078022A1 (en) 2001-02-28
US5990051A (en) 1999-11-23
CA2320949A1 (en) 1999-10-14
WO1999051704A1 (en) 1999-10-14
EP1078022A4 (en) 2002-04-17
AU3473099A (en) 1999-10-25
NO20004589L (en) 2000-12-05

Similar Documents

Publication Publication Date Title
WO1999051704A8 (en) Injection molded degradable casing perforation ball sealers
BR0112148A (en) Method of repairing an obstructed gravel casing in a wellbore and method of consolidating an underground formation penetrated by a wellbore
CA2367559A1 (en) Inflatable packer setting tool assembly
CA2456505A1 (en) Single-direction cementing plug
CA2435382A1 (en) Device and method to seal boreholes
WO2001080650A3 (en) Packer, setting tool for a packer and method for setting a packer
DE69829865D1 (en) HOLE PACKER
MXPA02010831A (en) Compression set packer.
CA2550161A1 (en) Apparatus, pumping systems incorporating same, and methods of protecting pump components
EP1031544A3 (en) Well Cementing compositions
WO2001077252A3 (en) Wellbore fluids and their application
EP1201874A3 (en) Compositions and their use for sealing subterranean zones
BR0108612B1 (en) viscous fluid for use in drillhole operations, underground formation fracturing method and method for reducing the amount of water produced from an underground oil production formation.
WO2006120374A8 (en) Nonnatural galactomannans and methods of use
BRPI0513987A (en) surfactant composition, and methods for fracturing an underground formation and for preparing a viscous surfactant composition
AU1252502A (en) Recovery of production fluids from an oil or gas well
DE60123612D1 (en) DEVICE AND METHOD FOR DRILLING AND PIPING A DRILLING PUMP WITH A PUMPABLE CEMENT HEATER
AP2001002253A0 (en) Method of releasing a stuck pipe or tools and spotting fluids therefor.
EP0816302A3 (en) Well cement compositions
MY118725A (en) A method for controlling the rheology of an aqueous fluid and gelling agent therefor
AU2003229032A1 (en) Use of surface-modified nanoparticles for oil recovery
CA2425724A1 (en) Tubing fill and testing valve
NO20055914L (en) Bronze goods assembly with pressure actuated seal assembly and setting tool
AU8346001A (en) Method and well tool for gravel packing a well using low viscosity fluids
WO2002055627A3 (en) Spotting fluid for differential sticking

Legal Events

Date Code Title Description
AK Designated states

Kind code of ref document: A1

Designated state(s): AE AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: A1

Designated state(s): GH GM KE LS MW SD SL SZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

DFPE Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101)
121 Ep: the epo has been informed by wipo that ep was designated in this application
ENP Entry into the national phase

Ref document number: 2320949

Country of ref document: CA

Ref country code: CA

Ref document number: 2320949

Kind code of ref document: A

Format of ref document f/p: F

WWE Wipo information: entry into national phase

Ref document number: 1999916401

Country of ref document: EP

NENP Non-entry into the national phase

Ref country code: KR

REG Reference to national code

Ref country code: DE

Ref legal event code: 8642

WWP Wipo information: published in national office

Ref document number: 1999916401

Country of ref document: EP

AK Designated states

Kind code of ref document: C1

Designated state(s): AE AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GD GE GH GM HR HU ID IL IN IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG UZ VN YU ZA ZW

AL Designated countries for regional patents

Kind code of ref document: C1

Designated state(s): GH GM KE LS MW SD SL SZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG

CFP Corrected version of a pamphlet front page
CR1 Correction of entry in section i
WWR Wipo information: refused in national office

Ref document number: 1999916401

Country of ref document: EP

WWW Wipo information: withdrawn in national office

Ref document number: 1999916401

Country of ref document: EP