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Patente citante Fecha de presentación Fecha de emisión Cesionario original Título
US398620527 Ene 197512 Oct 1976Minnesota Mining and Manufacturing CompanyDual particle population magnetic recording medium
US398620627 Ene 197512 Oct 1976Minnesota Mining and Manufacturing CompanyMagnetic recording medium with highly anisotropic particles
US399816016 Abr 197521 Dic 1976EMI LimitedMagnetic ink printing method
US402320415 Oct 197510 May 1977EMI LimitedMagnetic recording
US408113222 Oct 197428 Mar 1978E M I LimitedCredit cards and other security documents
US410451314 Oct 19751 Ago 1978E M I LimitedMagnetic recording
US411402915 Oct 197512 Sep 1978E M I LimitedMagnetic recording
US412584423 Ene 197814 Nov 1978U.S. Philips CorporationMagnetic position marker for a tape recorder using magnetically alignable particles for making the mark
US415886227 Oct 197719 Jun 1979Transac -- Compagnie pour le Developpement des Transactions AutomatiquesSelective fixation method for producing permanent magnetic recordings
US418694428 Abr 19785 Feb 1980EMI LimitedSecurity document
US419798926 Jun 197815 Abr 1980EMI LimitedMagnetic recording
US421581218 Ene 19795 Ago 1980CrouzetMagnetic information carrier
US421867420 Abr 197819 Ago 1980Dasy Inter S.A.Method and a system for verifying authenticity safe against forgery
US422834831 May 197914 Oct 1980E M I LimitedSecurity document and system
US423995923 Mar 197716 Dic 1980General Kinetics IncorporatedPerpetuation of information in magnetically recorded medium
US42875442 Ene 19791 Sep 1981Compagnie Internationale pour l'Informatique CII-Honeywell Bull (Societe Anonyme)Magnetic data carrier for perpendicular recording
US446738323 Feb 198121 Ago 1984Sharp Kabushiki KaishaMagnetooptic memory medium
US462666928 Dic 19832 Dic 1986Fairview PartnersIntercept system for intercepting stolen, lost and fraudulent cards
US463958425 Jul 198527 Ene 1987Non-alterable magnetic coding
US473937710 Oct 198619 Abr 1988Eastman Kodak CompanyConfidential document reproduction method and apparatus
US474349024 Feb 198610 May 1988Minnesota Mining and Manufacturing CompanyCounterfeit-resistant magnetic recording tape
US474526723 Ago 198517 May 1988Fairview PartnersFraudulent card intercept system
US477459316 Abr 198627 Sep 1988Sanyo Electric Co., Ltd.Image forming apparatus
US48631964 Ene 19895 Sep 1989Glory Kogyo Kabushiki KaishaCertification identifying medium
US528920216 Abr 199222 Feb 1994Oki Electric Industry Co., Ltd.Magnetic recording apparatus and magnetic recording medium with a film to be vertically magnetized sandwitched with soft magnetic films
US576226324 Jul 19969 Jun 1998Eastman Kodak CompanyProduct container containing a magnetic identifier
US576406011 Mar 19969 Jun 1998Minnesota Mining and Manufacturing CompanyGuidance system for a moving person
US585384615 Oct 199629 Dic 1998Minnesota Mining and Manufacturing CompanyConformable magnetic articles underlaid beneath traffic-bearing surfaces
US591732624 Nov 199729 Jun 1999Minnesota Mining and Manufacturing CompanyGuidance system for a moving person
US59810535 Oct 19939 Nov 1999Sandia CorporationTamper resistant magnetic stripes
US59885006 Ago 199623 Nov 1999Aveka, Inc.Antiforgery security system
US599393728 Nov 199430 Nov 1999Matsushita Electric Industrial Co., Ltd.Magneto-optic recording medium and method of fabricating the same
US60534067 Ago 199725 Abr 2000Aveka, Inc.Antiforgery security system
US611464612 Dic 19975 Sep 2000Opex CorporationApparatus and method for detecting documents having ferrous objects
US614674018 Mar 199914 Nov 2000Matsushita Electric Industrial Co., Ltd.Magnetic recording medium and method of fabricating the same
US640316913 Mar 200011 Jun 2002Securency Pty Ltd.Method of producing a security document
US646867822 Oct 199722 Oct 20023M Innovative Properties CompanyConformable magnetic articles for use with traffic bearing surfaces methods of making same systems including same and methods of use
US68342516 Dic 200121 Dic 2004Methods and devices for identifying, sensing and tracking objects over a surface
US70450492 Oct 200016 May 2006Nanoplex Technologies, Inc.Method of manufacture of colloidal rod particles as nanobar codes
US722508220 Jun 200029 May 2007Oxonica, Inc.Colloidal rod particles as nanobar codes
US769146829 Jun 20046 Abr 2010SICPA Holding S.A.Method and means for producing a magnetically induced design in a coating containing magnetic particles
US795058724 Sep 200731 May 2011The Board of Regents of the Nevada System of Higher Education on behalf of the University of Reno, NevadaDevices and methods for storing data
US819684112 Nov 201012 Jun 2012Tetra Laval Holdings & Finance S.A.Method of providing a packaging laminate with an identification code, method of identifying a package, and package with identification code
US821150918 Oct 20053 Jul 2012Alignment of paste-like ink having magnetic particles therein, and the printing of optical effects