Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5431704 | Ceramic abrasive grains, method of producing the same and abrasive products made of the same | Masahiro Tamamaki, Souichi Fujii | 1995-07-11 |
| 5190567 | Sintered aluminous abrasive grains and method of producing the same | Masahiro Tamamaki, Yoshihiro Onoda, Masaru Nozaki | 1993-03-02 |