Inventor
KOMURO KATSUHIRO
JP37 patents
⚠️ This page may combine multiple inventors who share the name “KOMURO KATSUHIRO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
HITACHI LTD
18 patentsUS6248969B1Jun 19, 2001
Vacuum circuit breaker, and vacuum bulb and vacuum bulb electrode used therefor
HITACHI LTD24 citations92
US6048216AApr 11, 2000
Vacuum circuit breaker as well as vacuum valve and electric contact used in same
HITACHI LTD18 citations92
US5852266ADec 22, 1998
Vacuum circuit breaker as well as vacuum valve and electric contact used in same
HITACHI LTD32 citations92
US5612523AMar 18, 1997
Vacuum circuit-breaker and electrode assembly therefor and a manufacturing method thereof
HITACHI LTD30 citations92
US5594224AJan 14, 1997
Vacuum circuit interrupter
HITACHI LTD20 citations92
US5557083ASep 17, 1996
Vacuum circuit breaker and electric contact
HITACHI LTD22 citations92
US6437275B1Aug 20, 2002
Vacuum circuit-breaker, vacuum bulb for use therein, and electrodes thereof
HITACHI LTD27 citations91
US5589652ADec 31, 1996
Ceramic-particle-dispersed metallic member, manufacturing method of same and use of same
HITACHI LTD25 citations91
US6793468B2Sep 21, 2004
Turbo-charger for internal-combustion engine
HITACHI LTD25 citations89
US5364248ANov 15, 1994
Sliding member, a method for producing same, and usages of same
HITACHI LTD32 citations89
US4383970AMay 17, 1983
Process for preparation of graphite-containing aluminum alloys
HITACHI LTD29 citations86
US4207096AJun 10, 1980
Method of producing graphite-containing copper alloys
HITACHI LTD27 citations82
US7399368B2Jul 15, 2008
Motor using magnet
HITACHI LTD5 citations74
US7064642B2Jun 20, 2006
Motor using magnet
HITACHI LTD5 citations74
US4084669AApr 18, 1978
Composite collector
HITACHI LTD14 citations74
US5763848AJun 9, 1998
Electrode for vacuum circuit breaker
HITACHI LTD16 citations73
US5697150ADec 16, 1997
Method forming an electric contact in a vacuum circuit breaker
HITACHI LTD17 citations73
US5691521ANov 25, 1997
Vacuum circuit breaker with improved contact assembly
HITACHI LTD16 citations72
SUMITOMO CHEMICAL CO
17 patentsUS11899363B2Feb 13, 2024
Salt, acid generator, resist composition and method for producing resist pattern
SUMITOMO CHEMICAL CO3 citations75
US12105419B2Oct 1, 2024
Salt, quencher, resist composition and method for producing resist pattern
SUMITOMO CHEMICAL CO1 citations63
US11820736B2Nov 21, 2023
Salt, acid generator, resist composition and method for producing resist pattern
SUMITOMO CHEMICAL CO1 citations63
US11550219B2Jan 10, 2023
Salt, quencher, resist composition and method for producing resist pattern, and method for producing salt
SUMITOMO CHEMICAL CO1 citations63
US11429025B2Aug 30, 2022
Salt, quencher, resist composition and method for producing resist pattern
SUMITOMO CHEMICAL CO0 citations63
US11385542B2Jul 12, 2022
Salt, quencher, resist composition and method for producing resist pattern
SUMITOMO CHEMICAL CO1 citations63
US12566375B2Mar 3, 2026
Salt, acid generator, resist composition and method for producing resist pattern
SUMITOMO CHEMICAL CO0 citations52
US12547073B2Feb 10, 2026
Salt, acid generator, resist composition and method for producing resist pattern
SUMITOMO CHEMICAL CO0 citations52
US12060316B2Aug 13, 2024
Carboxylate, quencher, resist composition and method for producing resist pattern
SUMITOMO CHEMICAL CO0 citations52
US11840503B2Dec 12, 2023
Salt, acid generator, resist composition and method for producing resist pattern
SUMITOMO CHEMICAL CO0 citations52
US11782342B2Oct 10, 2023
Salt and photoresist composition containing the same
SUMITOMO CHEMICAL CO0 citations52
US11548961B2Jan 10, 2023
Compound, resin, resist composition and method for producing resist pattern
SUMITOMO CHEMICAL CO0 citations52
US11474431B2Oct 18, 2022
Compound, resin, photoresist composition and process for producing photoresist pattern
SUMITOMO CHEMICAL CO0 citations52
US10915022B2Feb 9, 2021
Photoresist composition and process for producing photoresist pattern
SUMITOMO CHEMICAL CO0 citations52
US11505524B2Nov 22, 2022
Salt, acid generator, resist composition and method for producing resist pattern
SUMITOMO CHEMICAL CO0 citations51
US12487525B2Dec 2, 2025
Salt, acid generator, resist composition and method for producing resist pattern
SUMITOMO CHEMICAL CO0 citations46
US11822241B2Nov 21, 2023
Salt, acid generator, resist composition and method for producing resist pattern
SUMITOMO CHEMICAL CO0 citations45