Inventor · disambiguated record
Liyun Zheng
Also filed as: ZHENG LIYUN
19 granted patents·1 pending application·103 citations·filing 2003–2024
93Inventor score
Files withZHENG LIYUN5GEN MOTORS CORP4WESTING BRIDGE LLC4ZHEJIANG DAHUA TECHNOLOGY CO4GM GLOBAL TECH OPERATIONS INC1
Top patents by PatentIndex Score
20 records- 0193US8109138B2Method and system for estimating engine oil life based on viscosityHAN TAEYOUNG·Filed 2008·Granted Feb 7, 2012·20 cites·20 claims
- 0292US11299830B2Knitting needle with swivel jointWESTING BRIDGE LLC·Filed 2020·Granted Apr 12, 2022·4 cites·20 claims
- 0390US8210003B2Knitting needle and crochet hook assemblyZHENG LIYUN·Filed 2011·Granted Jul 3, 2012·24 cites·15 claims
- 0488US12139829B2Swivel connector assemblyWESTING BRIDGE LLC·Filed 2022·Granted Nov 12, 2024·2 cites·13 claims
- 0586US7712441B2Predicted engine oil pressureGM GLOBAL TECH OPERATIONS INC·Filed 2008·Granted May 11, 2010·9 cites·20 claims
- 0682US11060216B2Knitting needle with swivel jointWESTING BRIDGE LLC·Filed 2019·Granted Jul 13, 2021·4 cites·20 claims
- 0781US10443164B1Knitting needle with swivel jointZHENG LIYUN·Filed 2018·Granted Oct 15, 2019·6 cites·20 claims
- 0879US10619273B2Interchangeable knitting needles with secure connectionZHENG LIYUN·Filed 2018·Granted Apr 14, 2020·5 cites·20 claims
- 0972US11860516B2Surveillance deviceZHEJIANG DAHUA TECHNOLOGY CO·Filed 2021·Granted Jan 2, 2024·0 cites·12 claims
- 1071US11835847B2Surveillance deviceZHEJIANG DAHUA TECHNOLOGY CO·Filed 2021·Granted Dec 5, 2023·0 cites·18 claims
- 1168US6860250B1Engine lubrication system and pressure reducing valve for limiting overhead oil flowGEN MOTORS CORP·Filed 2003·Granted Mar 1, 2005·11 cites·11 claims
- 1268US6810845B1Lubrication system using valves to meet various engine oil pressure requirementsGEN MOTORS CORP·Filed 2003·Granted Nov 2, 2004·13 cites·11 claims
- 1366US9080516B2Diagnostic system and method for a variable valve lift mechanismZHENG LIYUN·Filed 2011·Granted Jul 14, 2015·1 cites·20 claims
- 1465US12497719B2Multi-member knitting needles and methods for making the sameWESTING BRIDGE LLC·Filed 2024·Granted Dec 16, 2025·0 cites·20 claims
- 1561US11092883B2Surveillance deviceZHEJIANG DAHUA TECHNOLOGY CO·Filed 2020·Granted Aug 17, 2021·0 cites·7 claims
- 1658US11914178B2Lighting devices for automatically switching between a visible light source and an infrared light sourceZHEJIANG DAHUA TECHNOLOGY CO·Filed 2021·Granted Feb 27, 2024·0 cites·15 claims
- 1747US7004131B1Engine shaft pumpGEN MOTORS CORP·Filed 2004·Granted Feb 28, 2006·4 cites·13 claims
- 1836US8720409B2Oil squirter with damping ventZHENG LIYUN·Filed 2012·Granted May 13, 2014·0 cites·20 claims
- 1935US6920850B2Engine lubrication systemGEN MOTORS CORP·Filed 2003·Granted Jul 26, 2005·0 cites·10 claims
- 2031US2005061289A1Engine oil system with oil pressure regulator to increase cam phaser oil pressureFiled 2003·Application pending·0 cites
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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →