Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4863513 | Iron-base anti-wear sintered alloy member | Genkichi Umeha, Osamu Hirakawa, Shunsuke Takeguchi | 1989-09-05 |
| 4790875 | Abrasion resistant sintered alloy | Osamu Hirakawa | 1988-12-13 |
| 4761870 | Method for making a camshaft | — | 1988-08-09 |
| 4708029 | Camshaft | — | 1987-11-24 |
| 4687185 | Tool for supporting a composite camshaft during sintering | Shunsuke Takeguchi | 1987-08-18 |
| 4649011 | Method of making a cam shaft | Genkichi Umeha, Osamu Hirakawa, Shunsuke Takegushi | 1987-03-10 |
| 4644912 | Cam shaft and method of manufacture | Genkichi Umeha, Osamu Hirakawa, Shunsuke Takegushi | 1987-02-24 |
| 4595556 | Method for manufacturing camshaft | Genkichi Umeha, Osamu Hirakawa, Shunsuke Takeguchi | 1986-06-17 |
| 4556532 | Method for manufacturing camshaft | Genkichi Umeha, Satoru Kato | 1985-12-03 |
| 4526617 | Wear resistant ferro-based sintered alloy | Takeshi Hiraoka, Masajiro Takeshita, Keiji Nakamura | 1985-07-02 |
| 4505988 | Sintered alloy for valve seat | Kiyoshi Yamamoto, Yoshiaki Takagi, Takeshi Sugawara | 1985-03-19 |
| 4472350 | Method of making a compound valve seat | — | 1984-09-18 |
| 4467169 | Cylinder liner | Takeshi Hiraoka, Kiyoshi Yamamoto | 1984-08-21 |
| 4447275 | Cylinder liner | Takeshi Hiraoka, Kiyoshi Yamamoto | 1984-05-08 |
| 4393821 | Cylinder or cylinder liner | — | 1983-07-19 |
| 4363662 | Abrasion resistant ferro-based sintered alloy | Kentaro Takahashi, Takeshi Hiraoka | 1982-12-14 |
| 4348232 | Abrasion resistant ferro-based sintered alloy | Takeshi Hiraoka, Masajiro Takeshita, Keiji Nakamura | 1982-09-07 |