Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12269980 | Silicon etching solution and method for producing silicon device using the etching solution | Seiji Tono, Kenji Kobayashi, Sei NEGORO | 2025-04-08 |
| 11466206 | Silicon etching solution and method for producing silicon device using the etching solution | Seiji Tono, Kenji Kobayashi, Sei NEGORO | 2022-10-11 |
| 10689349 | Method for producing intermediate of biotin and method for producing biotin | Fumiaki Iwasaki, Hiromasa Yamamoto, Kenji Tanaka, Masahiko Seki | 2020-06-23 |