Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5223333 | Composite material for enhancing traction | Shuichi Harada, Kazuya EMURA | 1993-06-29 |
| 4993099 | Cleaning and polishing pad | Hisao Nishiyama | 1991-02-19 |
| 4439237 | Metallurgically bonded diamond-metal composite sintered materials and method of making same | Shiro Kuminitsu, Izumi Hayakawa, Seizo Kitatani | 1984-03-27 |
| 4362535 | Sintered metal bonded diamond abrasive articles | Eiji Isobe, Izumi Hayakawa | 1982-12-07 |