Issued Patents 1997
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5696070 | Quarternary ammonium salt, method for production thereof, and softener composition using salt | Osamu Tachizawa, Akira Sakaguchi, Tohru Katoh, Kohshiro Sotoya, Noriko Yamaguchi +1 more | 1997-12-09 |