Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9452503 | Green ball grinding method, ceramic sphere fabrication method, and grinding apparatus | Katsutoshi Muramatsu | 2016-09-27 |
| 9284982 | Cage and rolling bearing | Mitsuo Kawamura, Eiichiro Shimazu, Takahiro Okuno, Junichi Ooshimo, Ryuichi Sakamoto | 2016-03-15 |
| 9192986 | Cage, rolling bearing, method for manufacturing cage, and injection mold | Eiichirou Shimazu | 2015-11-24 |
| 9032626 | Green ball grinding method, ceramic sphere fabrication method, and grinding apparatus | Katsutoshi Muramatsu | 2015-05-19 |