Inventor
ZHENG LIYUN
US19 patents
⚠️ This page may combine multiple inventors who share the name “ZHENG LIYUN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
ZHENG LIYUN
5 patentsUS8210003B2Jul 3, 2012
Knitting needle and crochet hook assembly
ZHENG LIYUN24 citations91
US10619273B2Apr 14, 2020
Interchangeable knitting needles with secure connection
ZHENG LIYUN5 citations67
US10443164B1Oct 15, 2019
Knitting needle with swivel joint
ZHENG LIYUN6 citations67
US9080516B2Jul 14, 2015
Diagnostic system and method for a variable valve lift mechanism
ZHENG LIYUN1 citations50
US8720409B2May 13, 2014
Oil squirter with damping vent
ZHENG LIYUN0 citations32
GEN MOTORS CORP
4 patentsUS6810845B1Nov 2, 2004
Lubrication system using valves to meet various engine oil pressure requirements
GEN MOTORS CORP13 citations81
US6860250B1Mar 1, 2005
Engine lubrication system and pressure reducing valve for limiting overhead oil flow
GEN MOTORS CORP11 citations71
US7004131B1Feb 28, 2006
Engine shaft pump
GEN MOTORS CORP4 citations60
US6920850B2Jul 26, 2005
Engine lubrication system
GEN MOTORS CORP0 citations49
WESTING BRIDGE LLC
4 patentsUS12139829B2Nov 12, 2024
Swivel connector assembly
WESTING BRIDGE LLC2 citations71
US11299830B2Apr 12, 2022
Knitting needle with swivel joint
WESTING BRIDGE LLC4 citations71
US11060216B2Jul 13, 2021
Knitting needle with swivel joint
WESTING BRIDGE LLC4 citations71
US12497719B2Dec 16, 2025
Multi-member knitting needles and methods for making the same
WESTING BRIDGE LLC0 citations50
ZHEJIANG DAHUA TECHNOLOGY CO
4 patentsUS11860516B2Jan 2, 2024
Surveillance device
ZHEJIANG DAHUA TECHNOLOGY CO0 citations61
US11835847B2Dec 5, 2023
Surveillance device
ZHEJIANG DAHUA TECHNOLOGY CO0 citations61
US11092883B2Aug 17, 2021
Surveillance device
ZHEJIANG DAHUA TECHNOLOGY CO0 citations61
US11914178B2Feb 27, 2024
Lighting devices for automatically switching between a visible light source and an infrared light source
ZHEJIANG DAHUA TECHNOLOGY CO0 citations57