Assignee
XTEC INC
US·12 granted patents·1 pending application·907 citations·filing 1991–2006
Top patents by PatentIndex Score
13 records- 0193US6901375B2Methods and apparatus for electronically storing and retrieving value information on a portable cardXTEC INC·Filed 2001·Granted May 31, 2005·127 cites·22 claims
- 0293US6760841B1Methods and apparatus for securely conducting and authenticating transactions over unsecured communication channelsXTEC INC·Filed 2000·Granted Jul 6, 2004·120 cites·16 claims
- 0388US5616904AData verification method and magnetic media thereforXTEC INC·Filed 1995·Granted Apr 1, 1997·133 cites·25 claims
- 0487US6678103B2Methods and apparatus for increased magnetic coding density by precise placement of magnetic transitionsXTEC INC·Filed 2002·Granted Jan 13, 2004·23 cites·16 claims
- 0586US6476991B1Methods and apparatus for increased magnetic coding density by precise placement of magnetic transitionsXTEC INC·Filed 2000·Granted Nov 5, 2002·23 cites·11 claims
- 0684US5644636AMethod and apparatus for securing data stored in semiconductor memory cellsXTEC INC·Filed 1994·Granted Jul 1, 1997·52 cites·34 claims
- 0784US5235166AData verification method and magnetic media thereforXTEC INC·Filed 1991·Granted Aug 10, 1993·89 cites·12 claims
- 0881US6993130B1Methods and apparatus for mediametric data cryptoprocessingXTEC INC·Filed 2000·Granted Jan 31, 2006·42 cites·22 claims
- 0981US6678823B1Methods and apparatus for authenticating data stored in semiconductor memory cellsXTEC INC·Filed 2000·Granted Jan 13, 2004·39 cites·15 claims
- 1078US6266647B1Methods and apparatus for electronically storing and retrieving value information on a portable cardXTEC INC·Filed 1997·Granted Jul 24, 2001·241 cites·22 claims
- 1176US7309002B2Differential radio frequency identification readerXTEC INC·Filed 2006·Granted Dec 18, 2007·6 cites·7 claims
- 1265US7014103B2Differential radio frequency identification readerXTEC INC·Filed 2004·Granted Mar 21, 2006·12 cites·7 claims
- 1346US2003154355A1Methods and apparatus for providing a memory challenge and responseXTEC INC·Filed 2003·Application pending·0 cites
Counts cover granted patents and pending applications in the PatentIndex corpus. How scoring works →