Source: http://www.google.com/patents/US6650229?dq=7,007,239
Timestamp: 2015-05-29 06:54:05
Document Index: 197910462

Matched Legal Cases: ['Application No. 00', 'Application No. 00', 'Application No. 00', 'Application No. 00', 'Application No. 00', 'Application No. 00', 'Application No. 00', 'Application No. 98', 'Application No. 98', 'Application No. 99', 'Application No. 99', 'Application No. 99', 'Application No. 99', 'Application No. 99', 'Application No. 99', 'Application No. 99', 'Application No. 99', 'Application No. 99']

Patent US6650229 - Electromagnetic transponder read terminal operating in very close coupling - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsA terminal for generating an electromagnetic field adapted to cooperating with at least one transponder when the latter enters its field, the terminal including an oscillating circuit adapted to receiving a high frequency A.C. excitation voltage, and circuitry for detuning this oscillating circuit with...http://www.google.com/patents/US6650229?utm_source=gb-gplus-sharePatent US6650229 - Electromagnetic transponder read terminal operating in very close couplingAdvanced Patent SearchPublication numberUS6650229 B1Publication typeGrantApplication numberUS 09/543,249Publication dateNov 18, 2003Filing dateApr 5, 2000Priority dateApr 7, 1999Fee statusPaidAlso published asDE60033882D1, DE60033882T2, EP1043677A1, EP1043677B1Publication number09543249, 543249, US 6650229 B1, US 6650229B1, US-B1-6650229, US6650229 B1, US6650229B1InventorsLuc Wuidart, Michel Bardouillet, Jean-Pierre EnguentOriginal AssigneeStmicroelectronics S.A.Export CitationBiBTeX, EndNote, RefManPatent Citations (98), Non-Patent Citations (18), Referenced by (27), Classifications (13), Legal Events (5) External Links: USPTO, USPTO Assignment, EspacenetElectromagnetic transponder read terminal operating in very close coupling
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dateApplicantTitleUS6879246May 11, 2001Apr 12, 2005Stmicroelectronics S.A.Evaluation of the number of electromagnetic transponders in the field of a readerUS6960985Jan 26, 2001Nov 1, 2005Stmicroelectronics S.A.Adaptation of the transmission power of an electromagnetic transponder readerUS7005967May 11, 2001Feb 28, 2006Stmicroelectronics S.A.Validation of the presence of an electromagnetic transponder in the field of an amplitude demodulation readerUS7023391May 17, 2001Apr 4, 2006Stmicroelectronics S.A.Electromagnetic field generation antenna for a transponderUS7046121Aug 9, 2001May 16, 2006Stmicroelectronics S.A.Detection of an electric signature of an electromagnetic transponderUS7046146May 17, 2001May 16, 2006Stmicroelectronics S.A.Electromagnetic field generation device for a transponderUS7049935Jul 13, 2000May 23, 2006Stmicroelectronics S.A.Sizing of an electromagnetic transponder system for a dedicated distant coupling operationUS7049936May 11, 2001May 23, 2006Stmicroelectronics S.A.Validation of the presence of an electromagnetic transponder in the field of a readerUS7058357Jul 13, 2000Jun 6, 2006Stmicroelectronics S.A.Sizing of an electromagnetic transponder system for an operation in extreme proximityUS7107008 *May 11, 2001Sep 12, 2006Stmicroelectronics S.A.Validation of the presence of an electromagnetic transponder in the field of a phase demodulation readerUS7263330Oct 27, 2005Aug 28, 2007Stmicroelectronics S.A.Validation of the presence of an electromagnetic transponder in the field of a phase demodulation readerUS7423517 *Jul 18, 2003Sep 9, 2008Nxp B.V.Transponder with a controllable power-on-reset circuitUS8130080 *Sep 14, 2006Mar 6, 2012Giesecke & Devrient GmbhTransponder actuatable switching deviceUS8310345 *May 1, 2009Nov 13, 2012Kabushiki Kaisha ToshibaReceiving apparatusUS8395485Jun 15, 2010Mar 12, 2013Stmicroelectronics (Rousset) SasInductive evaluation of the coupling factor of an electromagnetic transponderUS8446259Jun 15, 2010May 21, 2013Stmicroelectronics (Rousset) SasAuthentication of an electromagnetic terminal-transponder couple by the transponderUS8482388Jun 15, 2010Jul 9, 2013Stmicroelectronics (Rousset) SasAuthentication of a terminal by an electromagnetic transponderUS8693956Jun 15, 2010Apr 8, 2014Stmicroelectronics (Rousset) SasResistive evaluation of the coupling factor of an electromagnetic transponderUS8907761Jun 15, 2010Dec 9, 2014Stmicroelectronics (Rousset) SasAuthentication of an electromagnetic terminal-transponder couple by the terminalUS8922338Jun 15, 2010Dec 30, 2014Stmicroelectronics (Rousset) SasPower management in an electromagnetic transponderUS8922341May 22, 2013Dec 30, 2014Stmicroelectronics (Rousset) SasAuthentication of a terminal by an electromagnetic transponderUS8988196 *Jun 3, 2010Mar 24, 2015Stmicroelectronics (Rousset) SasPower recovery by an electromagnetic transponderUS20010015697 *Jan 26, 2001Aug 23, 2001Luc WuidartAdaptation of the transmission power of an electromagnetic transponder readerUS20090278704 *May 1, 2009Nov 12, 2009Kabushiki Kaisha ToshibaReceiving apparatusUS20110217926 *Oct 15, 2010Sep 8, 2011Qualcomm IncorporatedReverse link signaling via impedance modulationUS20120092901 *Jun 3, 2010Apr 19, 2012Stmicroelectronics (Rousset) SasPower management in an electromagnetic transponderUS20120105012 *Jun 3, 2010May 3, 2012Stmicroelectronics (Rousset) SasPower recovery by an electromagnetic transponder* Cited by examinerClassifications U.S. Classification340/10.4, 340/10.2, 340/10.3International ClassificationH04B1/59, G06K7/00, G06K17/00, G06K19/07, H02J17/00, H04B5/02Cooperative ClassificationG06K7/0008, G06K19/0701European ClassificationG06K19/07A, G06K7/00ELegal EventsDateCodeEventDescriptionApr 28, 2015FPAYFee paymentYear of fee payment: 12May 2, 2011FPAYFee paymentYear of fee payment: 8May 2, 2007FPAYFee paymentYear of fee payment: 4Jan 13, 2004CCCertificate of correctionJun 22, 2000ASAssignmentOwner name: STMICROELECTRONICS S.A., FRANCEFree format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:WUIDART, LUC;BARDOUILLET, MICHEL;ENGUENT, JEAN-PIERRE;REEL/FRAME:010877/0561;SIGNING DATES FROM 20000427 TO 20000428RotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services