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Brevets

Référencé par

Brevet citant Date de dépôt Date de délivrance Cessionnaire d'origine Titre
US395365628 févr. 197427 avr. 1976TDK Electronic CompanyMagnetic recording medium and preparation thereof
US42084475 juin 197817 juin 1980International Business Machines CorporationMethod for disorienting magnetic particles
US428104312 déc. 197728 juil. 1981Graham Magnetics, Inc.Polymodal magnetic recording media and compositions useful therein
US445153513 avr. 198129 mai 1984Eastman Kodak CompanyMagnetic recording elements, process for making the same and their use in recording
US451862628 déc. 198321 mai 1985Fuji Photo Film Co., Ltd.Process for preparing magnetic recording medium
US454457428 nov. 19831 oct. 1985Fuji Xerox Co., Ltd.Method of manufacturing a magnetic recording medium
US457828027 févr. 198425 mars 1986Agfa-Gevaert AktiengesellschaftProcess for the production of a magnetic recording material with perpendicular orientation
US493130918 janv. 19895 juin 1990Fuji Photo Film Co., Ltd.Method and apparatus for producing magnetic recording medium
US542074230 juil. 199330 mai 1995Minnesota Mining and ManufacturingDegausser for tape with plural recorded segments
US704788311 mars 200323 mai 2006JDS Uniphase CorporationMethod and apparatus for orienting magnetic flakes
US724148920 janv. 200410 juil. 2007JDS Uniphase CorporationOpaque flake for covert security applications
US725891514 août 200321 août 2007JDS Uniphase CorporationFlake for covert security applications
US73006954 janv. 200527 nov. 2007JDS Uniphase CorporationAlignable diffractive pigment flakes
US751757822 déc. 200414 avr. 2009JDS Uniphase CorporationMethod and apparatus for orienting magnetic flakes
US755019711 juil. 200723 juin 2009JDS Uniphase CorporationNon-toxic flakes for authentication of pharmaceutical articles
US760485520 déc. 200520 oct. 2009JDS Uniphase CorporationKinematic images formed by orienting alignable flakes
US76256322 août 20061 déc. 2009JDS Uniphase CorporationAlignable diffractive pigment flakes and method and apparatus for alignment and images formed therefrom
US76455104 oct. 200512 janv. 2010JDS Uniphase CorporationProvision of frames or borders around opaque flakes for covert security applications
US766789515 nov. 200523 févr. 2010JDS Uniphase CorporationPatterned structures with optically variable effects
US76745011 mai 20069 mars 2010JDS Uniphase CorporationTwo-step method of coating an article for security printing by application of electric or magnetic field
US772902612 déc. 20061 juin 2010JDS Uniphase CorporationSecurity device with metameric features using diffractive pigment flakes
US787648124 oct. 200625 janv. 2011JDS Uniphase CorporationPatterned optical structures with enhanced security feature
US78809431 oct. 20071 févr. 2011JDS Uniphase CorporationPatterned optical structures with enhanced security feature
US793445115 janv. 20073 mai 2011JDS Uniphase CorporationApparatus for orienting magnetic flakes
US802595230 oct. 200727 sept. 2011JDS Uniphase CorporationPrinted magnetic ink overt security image
US811896327 juin 200721 févr. 2012Stamping a coating of cured field aligned special effect flakes and image formed thereby

Dessins