Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4748196 | Water repellent composition | Katsuhiko Kuroda, Toru Tagawa, Yasoji Ozawa | 1988-05-31 |
| 4652611 | Low-temperature fluidity improver | Katsuhiko Kuroda, Tsutomu Baba | 1987-03-24 |