Inventor · disambiguated record
David K. Lee
Also filed as: LEE DAVID K
40 granted patents·3 pending applications·2,392 citations·filing 1988–2007
99Inventor score
Top patents by PatentIndex Score
43 records- 0199US5781438AToken generation process in an open metering systemPITNEY BOWES INC·Filed 1995·Granted Jul 14, 1998·394 cites·13 claims
- 0297US5796841ASecure user certification for electronic commerce employing value metering systemPITNEY BOWES INC·Filed 1995·Granted Aug 18, 1998·228 cites·34 claims
- 0388US6058193ASystem and method of verifying cryptographic postage evidencing using a fixed key setPITNEY BOWES INC·Filed 1999·Granted May 2, 2000·83 cites·11 claims
- 0487US5987441AToken generation process in an open metering systemPITNEY BOWES INC·Filed 1998·Granted Nov 16, 1999·71 cites·24 claims
- 0584US6898581B1Secure user certification for electronic commerce employing value metering systemPITNEY BOWES INC·Filed 2000·Granted May 24, 2005·16 cites·4 claims
- 0683US6151590ANetwork open metering systemPITNEY BOWES INC·Filed 1995·Granted Nov 21, 2000·69 cites·15 claims
- 0781US6157919APC-based open metering system and methodPITNEY BOWES INC·Filed 1995·Granted Dec 5, 2000·64 cites·23 claims
- 0881US5742683ASystem and method for managing multiple users with different privileges in an open metering systemPITNEY BOWES INC·Filed 1995·Granted Apr 21, 1998·184 cites·10 claims
- 0979US5982896ASystem and method of verifying cryptographic postage evidencing using a fixed key setPITNEY BOWES INC·Filed 1996·Granted Nov 9, 1999·55 cites·5 claims
- 1079US5812945AMetered payment cellular telephone communication systemPITNEY BOWES INC·Filed 1995·Granted Sep 22, 1998·94 cites·10 claims
- 1178US5452419ASerial communication control system between nodes having predetermined intervals for synchronous communications and mediating asynchronous communications for unused time in the predetermined intervalsPITNEY BOWES INC·Filed 1992·Granted Sep 19, 1995·49 cites·17 claims
- 1277US6098058APostage metering system and method for automatic detection of remote postage security devices on a networkPITNEY BOWES INC·Filed 1997·Granted Aug 1, 2000·65 cites·31 claims
- 1374US7080044B1PC-based open metering system and methodCORDERY ROBERT A·Filed 2000·Granted Jul 18, 2006·8 cites·8 claims
- 1474US6985888B1Secure user certification for electronic commerce employing value metering systemPITNEY BOWES INC·Filed 2000·Granted Jan 10, 2006·14 cites·2 claims
- 1574US6430543B1Controlled acceptance mail fraud detection systemPITNEY BOWES INC·Filed 1998·Granted Aug 6, 2002·52 cites·9 claims
- 1673US7647230B2Method and apparatus for tracking a special service delivery of a mail item created by an office workerPITNEY BOWES INC·Filed 2001·Granted Jan 12, 2010·8 cites·13 claims
- 1773US6134328ASecure user certification for electronic commerce employing value metering systemPITNEY BOWES INC·Filed 1998·Granted Oct 17, 2000·38 cites·12 claims
- 1873US5168804APostage meter having an automatic slogan sub-modulePITNEY BOWES INC·Filed 1991·Granted Dec 8, 1992·32 cites·3 claims
- 1972US6285990B1Method for reissuing digital tokens in an open metering systemPITNEY BOWES INC·Filed 1995·Granted Sep 4, 2001·40 cites·7 claims
- 2070US6085181APostage metering system and method for a stand-alone meter operating as a meter server on a networkPITNEY BOWES INC·Filed 1997·Granted Jul 4, 2000·42 cites·22 claims
- 2169US7539648B1Secure user certification for electronic commerce employing value metering systemPITNEY BOWES INC·Filed 2000·Granted May 26, 2009·4 cites·2 claims
- 2269US6813613B1System for printing on a local printer coupled to a meter server postage requested from a remote computerPITNEY BOWES INC·Filed 2000·Granted Nov 2, 2004·6 cites·8 claims
- 2367US5963928ASecure metering vault having LED output for recovery of postal fundsPITNEY BOWES INC·Filed 1997·Granted Oct 5, 1999·37 cites·25 claims
- 2467US5499374AEvent driven communication networkPITNEY BOWES INC·Filed 1993·Granted Mar 12, 1996·50 cites·20 claims
- 2566US6466921B1Virtual postage meter with secure digital signature devicePITNEY BOWES INC·Filed 1998·Granted Oct 15, 2002·151 cites·13 claims
- 2666US5390351ASystem for communicating with plural nodes in predetermined intervals depended on integers assigned and changed based upon configuration thereofPITNEY BOWES INC·Filed 1992·Granted Feb 14, 1995·50 cites·9 claims
- 2763US6865557B1Network open metering systemPITNEY BOWES INC·Filed 1999·Granted Mar 8, 2005·26 cites·19 claims
- 2862US7136839B2Method for reissuing digital tokens in an open metering systemPITNEY BOWES INC·Filed 2001·Granted Nov 14, 2006·6 cites·8 claims
- 2962US6907399B1Secure user certification for electronic commerce employing value metering systemPITNEY BOWES INC·Filed 2000·Granted Jun 14, 2005·5 cites·1 claims
- 3061US5793867ASystem and method for disaster recovery in an open metering systemPITNEY BOWES INC·Filed 1995·Granted Aug 11, 1998·96 cites·25 claims
- 3159US5625694AMethod of inhibiting token generation in an open metering systemPITNEY BOWES INC·Filed 1995·Granted Apr 29, 1997·104 cites·10 claims
- 3258US5590198AOpen metering system with super password vault accessPITNEY BOWES INC·Filed 1995·Granted Dec 31, 1996·59 cites·10 claims
- 3357US6061671ASystem and method for disaster recovery in an open metering systemPITNEY BOWES INC·Filed 1998·Granted May 9, 2000·80 cites·23 claims
- 3456US2009005901A1Payment system for delivery servicesPITNEY BOWES INC·Filed 2007·Application pending·0 cites
- 3556US2008301184A1System and Method for Updating Mailing ListsPITNEY BOWES INC·Filed 2007·Application pending·0 cites
- 3652US7092930B2Architecture and method to secure database records from tampering in devices such as postage value dispensing mechanismsPITNEY BOWES INC·Filed 2002·Granted Aug 15, 2006·10 cites·8 claims
- 3752US6260028B1Token generation process in an open metering systemPITNEY BOWES INC·Filed 1999·Granted Jul 10, 2001·14 cites·14 claims
- 3852US5835604AMethod of mapping destination addresses for use in calculating digital tokensPITNEY BOWES INC·Filed 1995·Granted Nov 10, 1998·19 cites·8 claims
- 3951US4947317ACommunication protocol for a three nodes system having dedicated connections and bit indicating function of exchanged messagePITNEY BOWES INC·Filed 1988·Granted Aug 7, 1990·19 cites·6 claims
- 4049US5680456AMethod of manufacturing generic meters in a key management systemPITNEY BOWES INC·Filed 1995·Granted Oct 21, 1997·24 cites·15 claims
- 4149US5007054ANetwork and protocol for real-time control of machine operationsPITNEY BOWES INC·Filed 1988·Granted Apr 9, 1991·15 cites·4 claims
- 4246US2002029152A1Method and apparatus for tracking mail items through a carrier distribution systemPITNEY BOWES INC·Filed 2001·Application pending·0 cites
- 4345US5003538ACommunication network and protocol for real-time control of mailing machine operationsPITNEY BOWES INC·Filed 1988·Granted Mar 26, 1991·11 cites·17 claims
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →