Inventor · disambiguated record
Li-Cheng Richard Zai
Also filed as: ZAI LI CHENG · ZAI LI-CHENG R · ZAI LI-CHENG RICHARD
20 granted patents·6 pending applications·1,337 citations·filing 1992–2023
96Inventor score
Top patents by PatentIndex Score
26 records- 0196US5777561AMethod of grouping RF transpondersIBM·Filed 1996·Granted Jul 7, 1998·293 cites·28 claims
- 0295US11293945B1Portable probe stand assemblyCHEN KUAN HUNG·Filed 2020·Granted Apr 5, 2022·3 cites·13 claims
- 0395US11150293B1Horizontal probing fixtureCHEN KUAN HUNG·Filed 2020·Granted Oct 19, 2021·3 cites·10 claims
- 0494US5995019AMethod for communicating with RF transpondersINTERMEC I P CORP·Filed 1998·Granted Nov 30, 1999·216 cites·18 claims
- 0593US5515366AMethod and apparatus for direct communication in a TDMA radio communication systemIBM·Filed 1994·Granted May 7, 1996·152 cites·56 claims
- 0690US5850181AMethod of transporting radio frequency power to energize radio frequency identification transpondersIBM·Filed 1996·Granted Dec 15, 1998·165 cites·30 claims
- 0788US6122329ARadio frequency identification interrogator signal processing system for reading moving transpondersINTERMEC IP CORP·Filed 1998·Granted Sep 19, 2000·144 cites·25 claims
- 0887US7176797B2Method and system of using active RFID tags to provide a reliable and secure RFID systemZAI LI-CHENG RICHARD·Filed 2004·Granted Feb 13, 2007·77 cites·52 claims
- 0986US6501807B1Data recovery system for radio frequency identification interrogatorINTERMEC IP CORP·Filed 1999·Granted Dec 31, 2002·131 cites·53 claims
- 1086US6429775B1Apparatus for transporting radio frequency power to energize radio frequency identification transpondersINTERMEC IP CORP·Filed 2000·Granted Aug 6, 2002·46 cites·48 claims
- 1176US7982585B2Method and apparatus for active RFID networkZAI LI-CHENG RICHARD·Filed 2007·Granted Jul 19, 2011·8 cites·20 claims
- 1269US6384712B1Apparatus, system, and method for communication between multiple base stations and radio frequency (RF) tagsINTERMEC IP CORP·Filed 1998·Granted May 7, 2002·35 cites·3 claims
- 1363US5635848AMethod and system for controlling high-speed probe actuatorsIBM·Filed 1995·Granted Jun 3, 1997·24 cites·6 claims
- 1462US12467947B2Low friction horizontal probing fixtureCHEN KUAN HUNG·Filed 2023·Granted Nov 11, 2025·0 cites·20 claims
- 1562US8836357B2Stackable probe systemZAI LI-CHENG RICHARD·Filed 2012·Granted Sep 16, 2014·2 cites·17 claims
- 1660US11125807B2Support fixture and probe station having the sameCHEN KUAN HUNG·Filed 2020·Granted Sep 21, 2021·0 cites·13 claims
- 1752US5402072ASystem and method for testing and fault isolation of high density passive boards and substratesIBM·Filed 1992·Granted Mar 28, 1995·14 cites·11 claims
- 1852US2009281888A1Method And Apparatus For Establishing Time-Based Loyalty RelationshipZAI LI-CHENG RICHARD·Filed 2008·Application pending·0 cites
- 1951US2009153348A1Method and apparatus for electronic-sign systemZAI LI-CHENG RICHARD·Filed 2008·Application pending·0 cites
- 2049US10830793B2Deflecting device for a probeCHEN KUAN HUNG·Filed 2019·Granted Nov 10, 2020·0 cites·9 claims
- 2149US2008284566A1Location based electronic sign systemZAI LI-CHENG RICHARD·Filed 2007·Application pending·0 cites
- 2248US2005061875A1Method and apparatus for a secure RFID systemFiled 2004·Application pending·0 cites
- 2344US5621327ASystem and method for testing and fault isolation of high density passive boards and substratesIBM·Filed 1995·Granted Apr 15, 1997·11 cites·4 claims
- 2444US5541520AFiltering for electronic module testIBM·Filed 1994·Granted Jul 30, 1996·13 cites·20 claims
- 2539US2005088284A1Method and system of using a RFID reader network to provide a large operating areaFiled 2004·Application pending·0 cites
- 2639US2002101848A1Systems and methods for on-location, wireless access of web contentFiled 2000·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →