Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6303096 | Pitch based carbon fibers | Iwao Yamamoto, Toshihiro Fukagawa, Mika Muroi | 2001-10-16 |
| 6197421 | Carbon fiber-reinforced resin composition | Iwao Yamamoto, Tadahiro Nishimoto | 2001-03-06 |
| 6120894 | Short carbon fiber bundling mass, process for producing the same and fiber-reinforced resin composition | Iwao Yamamoto, Tadahiro Nishimoto | 2000-09-19 |
| 6110847 | Carbon fiber woven fabric | Iwao Yamamoto, Akira Nakagoshi | 2000-08-29 |
| 5840265 | Carbon fibers and process for their production | Iwao Yamamoto | 1998-11-24 |
| 5721308 | Pitch based carbon fiber and process for producing the same | Iwao Yamamoto, Akira Nakagoshi, Kazuo Shirosaki | 1998-02-24 |
| 5643546 | Pitch-type carbon fibers and process for their production | Iwao Yamamoto, Hiroyuki Aikyo, Kazuo Shirosaki | 1997-07-01 |
| 5601794 | Pitch type carbon fibers and process for their production | Iwao Yamamoto, Hiroyuki Aikyo, Kazuo Shirosaki | 1997-02-11 |
| 5348719 | Process for producing carbon fibers having high strand strength | Iwao Yamamoto, Akira Nakagoshi | 1994-09-20 |
| 5213677 | Spinning pitch for carbon fibers and process for its production | Iwao Yamamoto, Ryuichi Hara, Toshiyuki Tajiri, Kazuo Shirosaki | 1993-05-25 |