TH

Toshiyuki Hirao

TC Toshiba Ceramics Co.: 3 patents #54 of 458Top 15%
SI Sumitomo Metal Industries: 1 patents #630 of 1,462Top 45%
Overall (All Time): #1,669,172 of 4,157,543Top 45%
3
Patents All Time

Issued Patents All Time

Showing 1–3 of 3 patents

Patent #TitleCo-InventorsDate
4975260 Process for preparing metal nitride powder Isao Imai, Toshitsugu Ishii, Kouichi Sueyoshi 1990-12-04
4640336 Refractory for continuous casting Kazumi Arakawa, Kenji Sugiura, Satoshi Kuroki, Sei Hiraki, Takao Suzuki +1 more 1987-02-03
4609347 Skid button structure Hajime Yamashita, Masatoshi Yamazaki 1986-09-02