Inventor
NAKAGAWA IPPEI
JP26 patents
⚠️ This page may combine multiple inventors who share the name “NAKAGAWA IPPEI”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
VALQUA LTD
13 patentsUSD933619SOct 19, 2021
Seal member for semiconductor production apparatus
VALQUA LTD24 citations94
USD933033SOct 12, 2021
Seal member for semiconductor production apparatus
VALQUA LTD13 citations94
USD933032SOct 12, 2021
Seal member for semiconductor production apparatus
VALQUA LTD12 citations94
USD909322SFeb 2, 2021
Seal member for use in semiconductor production apparatus
VALQUA LTD19 citations94
USD909323SFeb 2, 2021
Seal member for use in semiconductor production apparatus
VALQUA LTD28 citations94
USD898170SOct 6, 2020
Composite seal member for semiconductor production apparatus
VALQUA LTD12 citations94
USD896353SSep 15, 2020
Composite seal
VALQUA LTD20 citations94
USD933031SOct 12, 2021
Seal member for semiconductor production apparatus
VALQUA LTD11 citations86
USD901648SNov 10, 2020
Seal
VALQUA LTD12 citations86
USD917028SApr 20, 2021
Seal
VALQUA LTD8 citations84
USD922027SJun 15, 2021
Composite seal member for semiconductor production apparatus
VALQUA LTD1 citations73
US11231108B2Jan 25, 2022
Composite seal member
VALQUA LTD3 citations72
USD922546SJun 15, 2021
Composite seal member for semiconductor production apparatus
VALQUA LTD0 citations62
NIHON VALQUA KOGYO KK
7 patentsUSD633991SMar 8, 2011
Gate valve seal
NIHON VALQUA KOGYO KK87 citations98
USD822181SJul 3, 2018
Composite seal
NIHON VALQUA KOGYO KK40 citations94
USD754308SApr 19, 2016
Composite sealing material
NIHON VALQUA KOGYO KK30 citations94
USD821552SJun 26, 2018
Composite seal
NIHON VALQUA KOGYO KK24 citations92
USD942596SFeb 1, 2022
Seal material
NIHON VALQUA KOGYO KK8 citations86
USD877865SMar 10, 2020
Seal
NIHON VALQUA KOGYO KK9 citations84
US9892945B2Feb 13, 2018
Composite seal
NIHON VALQUA KOGYO KK9 citations84
MITSUBISHI NUCLEAR FUEL
3 patentsUS4857155AAug 15, 1989
Process of separation of hafnium from zirconium by molten salt electrolysis
MITSUBISHI NUCLEAR FUEL5 citations61
US5009751AApr 23, 1991
Process for separation of hafnium tetrachloride from zirconium tetrachloride
MITSUBISHI NUCLEAR FUEL5 citations60
US4925537AMay 15, 1990
Process for separation of hafnium tetrachloride from zirconium tetrachloride and electrode
MITSUBISHI NUCLEAR FUEL4 citations60