Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6110009 | Grinding machine for grinding frictional surface of pad and method of grinding the pad | Yukio Hashimoto, Yukio Iwata, Naozumi Kawanishi | 2000-08-29 |
| 5895616 | Method of preforming friction material | Takeo Yumoto, Naozumi Kawanishi, Yuji Watanabe | 1999-04-20 |