Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4251651 | Amphoteric polyelectrolyte | Shigenao Kawakami, Shigeru Ura, Naoyoshi Jinno, Wataru Tohoma | 1981-02-17 |
| 4221888 | Method of hydrolyzing acrylamide and methacrylamide polymers | Shigenao Kawakami, Shigenori Tajiri, Hiroshi Tashiro | 1980-09-09 |