Issued Patents 2003
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6635593 | High strength sintered impact having excellent resistance to cratering | Tomohiro Fukaya, Junichi Shiraishi, Tetsuo Nakai | 2003-10-21 |
| 6623850 | Tool of a surface-coated boron nitride sintered compact | Michiko Ota, Hisanori Ohara, Haruyo Fukui | 2003-09-23 |
| 6620491 | Tool of a surface-coated boron nitride sintered compact | Michiko Ota, Hisanori Ohara, Haruyo Fukui | 2003-09-16 |