Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9233904 | Method for producing polyoxyalkylene alkyl ether carboxylic acid or salt thereof | Takeshi Nakai, Toku Fujioka | 2016-01-12 |
| 8940933 | Method for producing polyoxyalkylene alkyl ether carboxylic acid and salt thereof | Takeshi Shirasawa, Kaoru Omae, Akira Matsunaga, Akira Sakaguchi | 2015-01-27 |
| 8652436 | Material for water gas | Takeshi Shirasawa | 2014-02-18 |