Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12365652 | Method for producing ε-caprolactam | Kenji Kawamura, Katsushige Yamada, Masato Akahira, Daisuke Yamamoto | 2025-07-22 |
| 11760739 | Method of producing 3-hydroxyadipic acid-3,6-lactone | Kenji Kawamura, Katsushige Yamada | 2023-09-19 |
| 11149001 | Method for producing ϵ-caprolactam | Masateru Ito, Katsushige Yamada, Masato Akahira, Daisuke Yamamoto, Koji Yamauchi | 2021-10-19 |
| 10364218 | Method of producing epsilon-caprolactam | Masateru Ito, Katsushige Yamada, Kohei Yamashita, Masato Akahira, Koji Yamauchi | 2019-07-30 |
| 10196352 | Method for producing epsilon-caprolactam | Masateru Ito, Kenji Kawamura, Kohei Yamashita, Masato Akahira, Katsushige Yamada +1 more | 2019-02-05 |
| 10125075 | P-toluic acid production method | Satoshi Sakami, Katsushige Yamada, Tetsu Yonehara | 2018-11-13 |
| 9790140 | Method for producing butadiene | Satoshi Sakami, Kenji Kawamura, Katsushige Yamada | 2017-10-17 |
| 9024074 | Method for producing p-xylene and/or p-tolualdehyde | Satoshi Sakami, Katsushige Yamada | 2015-05-05 |