Inventor
SHI ZHENCHUN
CA22 patents
⚠️ This page may combine multiple inventors who share the name “SHI ZHENCHUN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
OP HYGIENE IP GMBH
21 patentsUS10105018B2Oct 23, 2018
Two-piece foam piston pump
OP HYGIENE IP GMBH7 citations84
US10918246B2Feb 16, 2021
Two-piece foam piston pump
OP HYGIENE IP GMBH1 citations73
US10588466B2Mar 17, 2020
Two-piece foam piston pump
OP HYGIENE IP GMBH3 citations73
US10434532B2Oct 8, 2019
Three piece pump
OP HYGIENE IP GMBH4 citations73
US10299636B2May 28, 2019
Valvular conduit
OP HYGIENE IP GMBH3 citations73
US10154763B2Dec 18, 2018
Cartridge for pump assembly carrying rasp
OP HYGIENE IP GMBH1 citations63
US11974705B2May 7, 2024
Two-piece foam piston pump
OP HYGIENE IP GMBH0 citations62
USRE49597EAug 8, 2023
Valvular conduit
OP HYGIENE IP GMBH0 citations62
US11337563B2May 24, 2022
Two-piece foam piston pump
OP HYGIENE IP GMBH0 citations62
US11305306B2Apr 19, 2022
Dual pump hand cleaner foam dispenser
OP HYGIENE IP GMBH1 citations62
US10888884B2Jan 12, 2021
Dual pump hand cleaner foam dispenser
OP HYGIENE IP GMBH0 citations62
US10617263B2Apr 14, 2020
Liquid hand cleaner foam dispensing as spray and liquid stream
OP HYGIENE IP GMBH1 citations62
US10267305B2Apr 23, 2019
Piston pump arrangement automatically disabling in absence of inlet liquid
OP HYGIENE IP GMBH1 citations62
US10238241B2Mar 26, 2019
Liquid hand cleaner foam dispensing as spray and liquid stream
OP HYGIENE IP GMBH1 citations62
US10906713B2Feb 2, 2021
Non-removable container enclosure
OP HYGIENE IP GMBH0 citations52
US10584697B2Mar 10, 2020
Piston pump arrangement automatically disabling in absence of inlet liquid
OP HYGIENE IP GMBH0 citations52
US10464090B2Nov 5, 2019
Air assisted severance of fluid stream
OP HYGIENE IP GMBH0 citations52
US10433681B2Oct 8, 2019
Cartridge for pump assembly carrying rasp
OP HYGIENE IP GMBH0 citations52
US10421085B2Sep 24, 2019
Dual pump hand cleaner foam dispenser
OP HYGIENE IP GMBH0 citations52
US10150128B2Dec 11, 2018
Air assisted severance of fluid stream
OP HYGIENE IP GMBH1 citations52
US9826862B2Nov 28, 2017
Pump assembly carrying rasp
OP HYGIENE IP GMBH0 citations52