|
| US3950960 | 21 nov. 1974 | 20 avr. 1976 | S.T. Dupont | Process for storing a liquefied gas for its distribution in gaseous form |
| US3972694 | 14 nov. 1974 | 3 août 1976 | Whatman Reeve Angel Limited | Filter tube |
| US4006054 | 12 nov. 1975 | 1 févr. 1977 | Whatman Reeve Angel Limited | Method of making filter tubes |
| US4045338 | 30 juin 1976 | 30 août 1977 | Mitsubishi Rayon Co., Ltd.
Mitsubishi Heavy Industries, Ltd. | Method of removing scale-forming substances from hot water system |
| US4050237 | 18 nov. 1975 | 27 sept. 1977 | Pall Corporation | Demister assembly for removing liquids from gases |
| US4075097 | 1 avr. 1975 | 21 févr. 1978 | Monroe Auto Equipment Company | Oil filter with oil improving dissolving body |
| US4075098 | 7 nov. 1975 | 21 févr. 1978 | Monroe Auto Equipment Company | Masking elements for dissolving oil improving body in an oil filter |
| US4077885 | 12 déc. 1975 | 7 mars 1978 | Nederlandse Organisatie voor Toegepast-Natuurwetenschappelijk Onderzoek | Composite dynamic membrane |
| US4092250 | 9 août 1976 | 30 mai 1978 | Sumitomo Chemical Company, Limited | Filters for the selective collection of metallic ions |
| US4093515 | 1 mars 1976 | 6 juin 1978 | Government of the United States | Laminated carbon-containing silicone rubber membrane for use in membrane artificial lung |
| US4104170 | 7 janv. 1977 | 1 août 1978 | Met-Pro Corporation | Liquid filter having improved extended polypropylene element |
| US4130487 | 4 avr. 1977 | 19 déc. 1978 | Process Scientific Innovations Ltd. | Filters for liquids or gases |
| US4131544 | 3 août 1976 | 26 déc. 1978 | | Macroencapsulated sorbent element and process for using the same |
| US4149975 | 27 sept. 1977 | 17 avr. 1979 | Filtrox-Werk AG | Asbestos-free filtering layer |
| US4160684 | 23 juil. 1976 | 10 juil. 1979 | Finite Filter Company | Method of manufacturing a coalescing demister |
| US4212733 | 27 déc. 1977 | 15 juil. 1980 | Somar Manufacturing Co., Ltd. | Oil-water separation filters |
| US4242206 | 26 oct. 1978 | 30 déc. 1980 | Velcon Filters, Inc. | Filter dehydrator |
| US4256470 | 15 déc. 1978 | 17 mars 1981 | Wacker-Chemie GmbH | Process for the destruction of foam |
| US4292747 | 2 mai 1979 | 6 oct. 1981 | Zimmermann & Jansen GmbH | Compressed air dredge |
| US4294594 | 2 oct. 1979 | 13 oct. 1981 | United States Surgical Corporation | Self-contained filter assembly for removing air, particles and bacteria from a solution |
| US4333538 | 1 oct. 1979 | 8 juin 1982 | Atlas Copco Aktiebolag | Pneumatic drill lubricator |
| US4346557 | 7 mai 1980 | 31 août 1982 | General Motors Corporation | Incineration-cleanable composite diesel exhaust filter and vehicle equipped therewith |
| US4388086 | 28 août 1981 | 14 juin 1983 | Bauer-Kompressoren GmbH | Interchangeable and disposable filter cartridge and method of removing moisture and oil from compressed breathable air |
| US4395332 | 28 avr. 1981 | 26 juil. 1983 | Max Klein
Frederick G. Crane, Jr. | Adsorption and filtration mat for liquids |
| US4434054 | 20 déc. 1982 | 28 févr. 1984 | Texaco Canada Resources Ltd. | Filter for separating discrete solid elements from a fluid stream |
| US4487618 | 19 août 1982 | 11 déc. 1984 | La-Man Corporation | Airline vapor trap |
| US4511473 | 9 févr. 1982 | 16 avr. 1985 | AMF Incorporated | Fibrous media containing millimicron-sized particulates |
| US4579658 | 16 juin 1983 | 1 avr. 1986 | | Filter element |
| US4588500 | 4 sept. 1984 | 13 mai 1986 | Kaydon Corporation | Fuel filter and dehydrator |
| US4594202 | 6 janv. 1984 | 10 juin 1986 | Pall Corporation | Method of making cylindrical fibrous filter structures |
| US4634458 | 10 févr. 1986 | 6 janv. 1987 | The United States of America as represented by the Secretary of the Navy | Double-stage air filter |
| US4664752 | 26 nov. 1982 | 12 mai 1987 | Industrial Filter & Pump Mfg. Co. | Desalination system |
| US4726901 | 17 mars 1986 | 23 févr. 1988 | Pall Corporation | Cylindrical fibrous structures with graded pore size |
| US4780213 | 9 déc. 1986 | 25 oct. 1988 | Idreco USA Ltd. | Filter media and method of filtration |
| US4789479 | 17 août 1987 | 6 déc. 1988 | Asahi Kasei Kogyo Kabushiki Kaisha | Packing for chromatography |
| US4801313 | 13 avr. 1987 | 31 janv. 1989 | Mann Technology Limited Partnership | Gas purification apparatus |
| US4822387 | 22 oct. 1987 | 18 avr. 1989 | Reading Technologies, Inc. | Inverse flow depth filter assembly |
| US4828698 | 30 juin 1988 | 9 mai 1989 | Pall Corporation | Filtering apparatus |
| US4865815 | 1 juin 1987 | 12 sept. 1989 | La-Man Corporation | In-line compressed air carbon monoxide filter |
| US5037454 | 26 déc. 1989 | 6 août 1991 | Mann Technology Limited Partnership | Coalescing apparatus and method |
| US5122167 | 26 déc. 1989 | 16 juin 1992 | SKD Pneumatics Inc. | Free-flow gas filter assembly |
| US5427609 | 14 sept. 1993 | 27 juin 1995 | Horton Industries, Inc. | Device for cleaning and drying compressed gas |
| US5622537 | 6 avr. 1995 | 22 avr. 1997 | Donaldson Company, Inc. | Filtration arrangement |
| US5713985 | 12 févr. 1996 | 3 févr. 1998 | | Multi-function separator |
| US5762669 | 31 juil. 1996 | 9 juin 1998 | Donaldson Company, Inc. | Filtration arrangement |
| US5762670 | 31 juil. 1996 | 9 juin 1998 | Donaldson Company, Inc. | Filtration arrangement |
| US5792227 | 27 mars 1997 | 11 août 1998 | Donaldson Company, Inc. | Filtration arrangement |
| US5800587 | 12 févr. 1997 | 1 sept. 1998 | Donaldson Company, Inc. | Filtration arrangement and method |
| US5851270 | 20 mai 1997 | 22 déc. 1998 | Advanced Technology Materials, Inc. | Low pressure gas source and dispensing apparatus with enhanced diffusive/extractive means |
| US6019809 | 6 mars 1998 | 1 févr. 2000 | Donaldson Company, Inc. | Filtration arrangement |
| US6074460 | 5 oct. 1998 | 13 juin 2000 | UOP LLC | Analysis of volatile organic compounds in water and air using attapulgite clays |
| US6152996 | 5 mars 1998 | 28 nov. 2000 | Air-Maze Corporation | Air cleaner element having incorporated sorption element |
| US6346138 | 1 sept. 1999 | 12 févr. 2002 | Praxair Technology, Inc. | Purification of hexafluoroethane |
| US6485535 | 20 oct. 2000 | 26 nov. 2002 | Donaldson Company, Inc. | Conically shaped air-oil separator |
| US6527839 | 13 juin 2001 | 4 mars 2003 | Bendix Commercial Vehicle Systems LLC | Spin-on filtering oil removal cartridge |
| US6585790 | 28 oct. 2002 | 1 juil. 2003 | Donaldson Company, Inc. | Conically shaped air-oil separator |
| US6797025 | 23 juin 2003 | 28 sept. 2004 | Donaldson Company, Inc. | Conically shaped air-oil separator |
| US6923851 | 30 avr. 2003 | 2 août 2005 | Butler-Justice, Inc. | Blue smoke control collector system |
| US7008472 | 29 janv. 2003 | 7 mars 2006 | Bendix Commercial Vehicle Systems, LLC | Spin-on filtering oil removal cartridge |
| US7494533 | 29 déc. 2005 | 24 févr. 2009 | American Air Liquide, Inc. | Systems for purifying gases having organic impurities using granulated porous glass |
| US7524359 | 29 déc. 2005 | 28 avr. 2009 | American Air Liquide, Inc. | Methods for purifying gases having organic impurities using granulated porous glass |
| US8097071 | 22 oct. 2008 | 17 janv. 2012 | Mott Corporation | Sintered fiber filter |
| US8177875 | 31 janv. 2006 | 15 mai 2012 | Donaldson Company, Inc. | Aerosol separator; and method |
| USH773 | 30 sept. -12 | | Pall Corporation | Coalescer filter unit drain device |
