Inventor
PAN YICHUAN
US27 patents
⚠️ This page may combine multiple inventors who share the name “PAN YICHUAN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
EASTMAN KODAK CO
9 patentsUS6908179B2Jun 21, 2005
Ink level and negative pressure control in an ink jet printer
EASTMAN KODAK CO51 citations96
US7210771B2May 1, 2007
Ink delivery system with print cartridge, container and reservoir apparatus and method
EASTMAN KODAK CO25 citations92
US7004574B2Feb 28, 2006
Ink delivery system including a pulsation dampener
EASTMAN KODAK CO29 citations92
US6866359B2Mar 15, 2005
Ink jet printhead quality management system and method
EASTMAN KODAK CO38 citations88
US6935731B2Aug 30, 2005
Ink jet print system including print cartridge
EASTMAN KODAK CO14 citations82
US6877846B2Apr 12, 2005
Replaceable ink jet supply with anti-siphon back pressure control
EASTMAN KODAK CO16 citations82
US7234787B2Jun 26, 2007
Liquid level detection method and apparatus
EASTMAN KODAK CO14 citations81
US6692116B2Feb 17, 2004
Replaceable ink jet print head cartridge assembly with reduced internal pressure for shipping
EASTMAN KODAK CO6 citations74
US7393071B2Jul 1, 2008
Ink level and negative pressure control in an ink jet printer
EASTMAN KODAK CO0 citations52
PROTOSTAR INC A DELAWARE CORP
8 patentsUS10617592B2Apr 14, 2020
Wheeled walker
PROTOSTAR INC A DELAWARE CORP16 citations93
USD902791SNov 24, 2020
Wheeled walker
PROTOSTAR INC A DELAWARE CORP19 citations92
USD874351SFeb 4, 2020
Wheeled walker
PROTOSTAR INC A DELAWARE CORP23 citations92
US10555866B2Feb 11, 2020
Wheeled walker wheel direction lock apparatus and method
PROTOSTAR INC A DELAWARE CORP20 citations89
US10307321B2Jun 4, 2019
Wheeled walker with a movable seat
PROTOSTAR INC A DELAWARE CORP15 citations84
US10973730B2Apr 13, 2021
Wheeled walker
PROTOSTAR INC A DELAWARE CORP7 citations83
US10085909B2Oct 2, 2018
Collapsible upright wheeled walker apparatus
PROTOSTAR INC A DELAWARE CORP6 citations82
US10322056B2Jun 18, 2019
Collapsible upright wheeled walker apparatus
PROTOSTAR INC A DELAWARE CORP2 citations71
PROTOSTAR INC
5 patentsUS9585807B2Mar 7, 2017
Collapsible upright wheeled walker apparatus
PROTOSTAR INC33 citations95
US11071676B2Jul 27, 2021
Collapsible wheeled walker with stability enhancing bracket apparatus and method
PROTOSTAR INC9 citations82
US10828226B2Nov 10, 2020
Collapsible upright wheeled walker apparatus
PROTOSTAR INC4 citations82
US10588815B2Mar 17, 2020
Collapsible upright wheeled walker apparatus
PROTOSTAR INC6 citations82
US10434031B2Oct 8, 2019
Wheeled walker with a moveable seat
PROTOSTAR INC2 citations71