Inventor · disambiguated record
Ulrich Friedrich
Also filed as: FRIEDRICH ULRICH
58 granted patents·17 pending applications·354 citations·filing 1997–2020
98Inventor score
Top patents by PatentIndex Score
75 records- 0192US7321300B2Security device for a transponderATMEL GERMANY GMBH·Filed 2005·Granted Jan 22, 2008·36 cites·24 claims
- 0289US6940467B2Circuit arrangement and method for deriving electrical power from an electromagnetic fieldATMEL GERMANY GMBH·Filed 2004·Granted Sep 6, 2005·59 cites·26 claims
- 0386US7872567B2Method for transponder access controlATMEL AUTOMOTIVE GMBH·Filed 2006·Granted Jan 18, 2011·14 cites·17 claims
- 0482US8477017B2Method, system, and integrated circuit for communication in RFID or remote sensor systemsFRIEDRICH ULRICH·Filed 2011·Granted Jul 2, 2013·5 cites·20 claims
- 0581US6870461B2Integrated receiving/backscattering arrangement for contactless data transmissionATMEL GERMANY GMBH·Filed 2002·Granted Mar 22, 2005·33 cites·24 claims
- 0680US7893815B2Method for selecting one or several transpondersATMEL AUTOMOTIVE GMBH·Filed 2005·Granted Feb 22, 2011·9 cites·33 claims
- 0777US8254841B2Method and apparatus for data communication between a base station and a transponderFRIEDRICH ULRICH·Filed 2011·Granted Aug 28, 2012·3 cites·20 claims
- 0876US7151436B2Receiving/backscattering arrangement and method with two modulation modes for wireless data transmission as well as modulation arrangement thereforATMEL GERMANY GMBH·Filed 2004·Granted Dec 19, 2006·22 cites·13 claims
- 0975US8296852B2Transponder, RFID system, and method for RFID system with key managementFRIEDRICH ULRICH·Filed 2007·Granted Oct 23, 2012·6 cites·15 claims
- 1075US7999659B2Method for access controlATMEL CORP·Filed 2007·Granted Aug 16, 2011·7 cites·3 claims
- 1174US7994921B2Method for wireless data transmission and a transponderATMEL CORP·Filed 2007·Granted Aug 9, 2011·6 cites·19 claims
- 1274US7859387B2Backscatter transponderATMEL AUTOMOTIVE GMBH·Filed 2005·Granted Dec 28, 2010·6 cites·27 claims
- 1371US7436286B2Circuit arrangement and method for increasing the functional range of a transponderATMEL GERMANY GMBH·Filed 2004·Granted Oct 14, 2008·19 cites·22 claims
- 1470US7633111B2Semiconductor structureATMEL AUTOMOTIVE GMBH·Filed 2005·Granted Dec 15, 2009·4 cites·20 claims
- 1570US7609147B2Method and apparatus for improving wireless data transmissionATMEL AUTOMOTIVE GMBH·Filed 2005·Granted Oct 27, 2009·4 cites·15 claims
- 1669US8160253B2Method, transponder, and system for rapid data transmissionFISCHER MARTIN·Filed 2007·Granted Apr 17, 2012·4 cites·20 claims
- 1768US7342481B2Method and circuit arrangement for wireless data transmissionATMEL GERMANY GMBH·Filed 2005·Granted Mar 11, 2008·3 cites·12 claims
- 1867US9317981B2Method and device for protecting products against counterfeitingFRIEDRICH ULRICH·Filed 2008·Granted Apr 19, 2016·3 cites·27 claims
- 1966US8553674B2Method for wireless data transmissionFRIEDRICH ULRICH·Filed 2011·Granted Oct 8, 2013·1 cites·7 claims
- 2066US7376391B2Wireless data transmission between base station and transponder with encoding/decoding parameter adjusted dependent on header symbol durationATMEL GERMANY GMBH·Filed 2004·Granted May 20, 2008·10 cites·28 claims
- 2165US7158010B2Circuit arrangement and method for phase modulation in a backscattering transponderATMEL GERMANY GMBH·Filed 2004·Granted Jan 2, 2007·10 cites·18 claims
- 2264US8643472B2Locating a backscatter-based transponderFISCHER MARTIN·Filed 2011·Granted Feb 4, 2014·1 cites·20 claims
- 2364US8274370B2Modulator and modulation method for a wireless data transmission deviceFRIEDRICH ULRICH·Filed 2007·Granted Sep 25, 2012·2 cites·23 claims
- 2464US8183983B2Method for the at least temporary activation of bidirectional communication and transponderFRIEDRICH ULRICH·Filed 2008·Granted May 22, 2012·2 cites·20 claims
- 2564US8111672B2Method for data communication between a base station and a transponderFRIEDRICH ULRICH·Filed 2005·Granted Feb 7, 2012·2 cites·26 claims
- 2663US8138889B2Method, transponder, and system for secure data exchangeFISCHER MARTIN·Filed 2007·Granted Mar 20, 2012·2 cites·20 claims
- 2763US7359472B2Method and apparatus for wireless data transmissionATMEL GERMANY GMBH·Filed 2005·Granted Apr 15, 2008·2 cites·16 claims
- 2863US6952560B2Tuned antenna resonant circuit of a passive transponderATMEL GERMANY GBMH·Filed 2002·Granted Oct 4, 2005·18 cites·18 claims
- 2962US8368516B2Secure data exchange with a transponderATMEL CORP·Filed 2012·Granted Feb 5, 2013·1 cites·20 claims
- 3062US8013716B2Method for wireless data transmissionATMEL CORP·Filed 2005·Granted Sep 6, 2011·2 cites·12 claims
- 3162US7102488B2Method for selecting transpondersATMEL GERMANY GMBH·Filed 2003·Granted Sep 5, 2006·8 cites·2 claims
- 3261US7312692B2Method for selecting one or several transpondersATMEL GERMANY GMBH·Filed 2004·Granted Dec 25, 2007·7 cites·15 claims
- 3361US7277478B2Method for transmitting data between a base station and a transponderATMEL GERMANY GMBH·Filed 2003·Granted Oct 2, 2007·7 cites·19 claims
- 3460US9806748B2Transponder with receiving means having a low electrical consumption in a listening modeEM MICROELECTRONIC MARIN SA·Filed 2012·Granted Oct 31, 2017·2 cites·24 claims
- 3560US7592919B2Circuit arrangement for use in RF transponders and method for controlling a number of such transpondersATMEL GERMANY GMBH·Filed 2008·Granted Sep 22, 2009·1 cites·13 claims
- 3659US8244786B2Device and method for generating a random numberFISCHER MARTIN·Filed 2008·Granted Aug 14, 2012·2 cites·21 claims
- 3759US7733217B2Method for data transmission in RFID or remote sensor systemsATMEL AUTOMOTIVE GMBH·Filed 2005·Granted Jun 8, 2010·1 cites·23 claims
- 3859US7336154B2Method for selecting one or more transpondersATMEL GERMANY GMBH·Filed 2004·Granted Feb 26, 2008·6 cites·13 claims
- 3957US9197341B2Method, apparatus, and logic for wireless data transmissionATMEL CORP·Filed 2013·Granted Nov 24, 2015·0 cites·20 claims
- 4056US9661401B2Locating a backscatter-based transponderATMEL CORP·Filed 2014·Granted May 23, 2017·0 cites·24 claims
- 4155US9224020B2Method, transponder, and circuit for selecting one or more transpondersATMEL CORP·Filed 2013·Granted Dec 29, 2015·0 cites·20 claims
- 4255US9165169B2Method for data communication between a base station and a transponderATMEL CORP·Filed 2014·Granted Oct 20, 2015·0 cites·23 claims
- 4355US7675964B2Method for transmitting a plurality of information symbolsATMEL AUTOMOTIVE GMBH·Filed 2001·Granted Mar 9, 2010·3 cites·26 claims
- 4455US7173519B2Circuit arrangement with simplified input circuit for phase modulation in a backscattering transponderATMEL GERMANY GMBH·Filed 2004·Granted Feb 6, 2007·4 cites·24 claims
- 4554US8577295B2Method and apparatus for data communication between a base station and a transponderFRIEDRICH ULRICH·Filed 2012·Granted Nov 5, 2013·0 cites·20 claims
- 4654US7986653B2Wireless data transmission between base station and transponder with transmission parameter adjusted based on transponder operating informationATMEL CORP·Filed 2004·Granted Jul 26, 2011·4 cites·19 claims
- 4754US2008012685A1Scalable method for access controlFRIEDRICH ULRICH·Filed 2007·Application pending·0 cites
- 4853US7049958B2Integrated circuit for a transponderATMEL GERMANY GMBH·Filed 2004·Granted May 23, 2006·5 cites·21 claims
- 4951US8761149B2Method for data communication between a base station and a transponderFRIEDRICH ULRICH·Filed 2006·Granted Jun 24, 2014·0 cites·23 claims
- 5051US8552837B2Data transmission method and apparatus in RFID and remote sensor systemsFRIEDRICH ULRICH·Filed 2011·Granted Oct 8, 2013·0 cites·20 claims
Showing the top 50 of 75 patent records by PatentIndex Score.
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