Inventor
KITAGAWA YOSHIHIKO
16 patents
⚠️ This page may combine multiple inventors who share the name “KITAGAWA YOSHIHIKO”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SUMITOMO CHEMICAL CO
9 patentsUS4522955AJun 11, 1985
Highly foamed polypropylene product and an extrusion process for forming the product
SUMITOMO CHEMICAL CO44 citations92
US4344906AAug 17, 1982
Process for producing glass fiber-reinforced transparent cast sheet
SUMITOMO CHEMICAL CO34 citations92
US4287317ASep 1, 1981
Continuous process for producing rubber-modified methyl methacrylate syrups
SUMITOMO CHEMICAL CO37 citations90
US4228266AOct 14, 1980
Process for producing copolymerized resins
SUMITOMO CHEMICAL CO5 citations73
US5496863AMar 5, 1996
Method of crosslinking rubber and plastic moldings
SUMITOMO CHEMICAL CO9 citations72
US4039733AAug 2, 1977
Novel petroleum resin formed by a catalyst system containing (a) organoaluminum compound and (b) alkyl halide or hydrogen halide as cocatalyst
SUMITOMO CHEMICAL CO9 citations72
US4038474AJul 26, 1977
Process for preparing novel petroleum resin employing AlRX2 and alkyl halide or hydrogen halide
SUMITOMO CHEMICAL CO8 citations72
US4008360AFeb 15, 1977
Process for producing petroleum resin
SUMITOMO CHEMICAL CO8 citations72
US4156762AMay 29, 1979
Process for producing light-colored clear petroleum resins
SUMITOMO CHEMICAL CO7 citations71
KOBE STEEL LTD
5 patentsUS11691227B2Jul 4, 2023
Solid wire for electroslag welding, and welding joint
KOBE STEEL LTD0 citations59
US10562134B2Feb 18, 2020
Flux-cored wire for gas-shielded arc welding
KOBE STEEL LTD1 citations57
US12558745B2Feb 24, 2026
Flux for electroslag welding and electroslag welding method
KOBE STEEL LTD0 citations50
US9956650B2May 1, 2018
Weld metal having excellent resistance to hydrogen embrittlement
KOBE STEEL LTD1 citations49
US10427249B2Oct 1, 2019
Flux-cored wire for gas-shielded arc welding
KOBE STEEL LTD0 citations36