YH

Yasuhiro Hirai

MC Mitsubishi Gas Chemical Company: 4 patents #481 of 1,727Top 30%
ME Mitsubishi Engineering-Plastics: 2 patents #49 of 163Top 35%
OC Osaka Gas Co.: 1 patents #252 of 689Top 40%
Overall (All Time): #638,203 of 4,157,543Top 20%
8
Patents All Time

Issued Patents All Time

Showing 1–8 of 8 patents

Patent #TitleCo-InventorsDate
D853232 Combined container and base 2019-07-09
8097670 Polyacetal resin composition, process for producing the same, and sliding member molded from the resin composition Masayuki Nagai 2012-01-17
6664313 Polycarbonate resin composition and its molded articles Kazuhiko Ishii 2003-12-16
6228343 Method for producing isotropic pitch, activated carbon fibers and carbon materials for non-aqueous secondary battery anodes Takahumi Yoshimura, Koichi Kanno, Yukio Sakai, Nobuyuki Koike, Yuzuru Takahashi +4 more 2001-05-08
6042798 Method of desulfurization of hydrocarbons Masataka Masuda, Osamu Okada, Takeshi Tabata, Hiroki Fujita 2000-03-28
5944980 Method for producing isotropic pitch, activated carbon fibers and carbon materials for non-aqueous secondary battery anodes Takahumi Yoshimura, Koichi Kanno, Yukio Sakai, Nobuyuki Koike, Yuzuru Takahashi +4 more 1999-08-31
5644018 Pitch with reduced tendency to smoke during spinning and a process for the production of said pitch Takashi Kojima, Takafumi Yoshimura 1997-07-01
5321097 Heat-resistant resin composition Takao Kawaki, Akikazu Amagai, Masahiko Ishikawa, Toshiaki Yamada, Hajime Ban 1994-06-14