Issued Patents All Time
Showing 26–34 of 34 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4338456 | Method of producing biphenyltetracarboxylic esters | Akinori Shiotani, Akiyoshi Yokota | 1982-07-06 |
| 4294976 | Process for producing biphenyl compounds | Hataaki Yoshimoto, Akinori Shiotani, Akiyoshi Yokota, Motozoh Yoshikiyo | 1981-10-13 |
| 4292435 | Method of producing biphenyltetracarboxylic esters | Akinori Shiotani, Akiyoshi Yokota | 1981-09-29 |
| 4290936 | Process for preparing polyimide solution | Yoshikazu Sasaki, Hiroshi Inoue, Ichiro Sasaki, Mikito Kashima | 1981-09-22 |
| 4273007 | Transmission for agricultural tractor | Mitsuhiro Sato, Kenji Matsuda | 1981-06-16 |
| 4262768 | Power transmission system for tractor | Kenji Matsuda, Tadao Terahigashi, Etsuzi Kisita, Masatugu Tone | 1981-04-21 |
| 4247443 | Aromatic polyimide resin composition | Ichiro Sasaki, Mikito Kashima, Hataaki Yoshimoto, Shuji Yamamoto, Yoshikazu Sasaki | 1981-01-27 |
| 4245518 | Device for tightening an endless element trained over driving members | Kazuo Toyokuni, Junji Miyata, Ryozo Kuroiwa | 1981-01-20 |
| 4229589 | Process for preparing a diester of oxalic acid | Kenji Nishimura, Shinichiro Uchiumi, Kozo Fujii, Keigo Nishihira, Masayoshi Yamashita | 1980-10-21 |