Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4925634 | Catalytic converter for use with internal combustion engine | Osamu Yokokoji | 1990-05-15 |
| 4851298 | Multi-layer tube of a muffler for an internal combustion engine | — | 1989-07-25 |
| 4793544 | Method of producing a multi-layer tube of a muffler | — | 1988-12-27 |
| 4719679 | Method of manufacturing tubes for use in a muffler for internal combustion engines | — | 1988-01-19 |
| 4656830 | Exhaust manifold for internal combustion engines | Hiromitsu Ohno, Yutaka Noritake, Kimimasa Owari | 1987-04-14 |
| 4637491 | Muffler for internal combustion engine and method of manufacturing tubes for use therein | — | 1987-01-20 |
| 4589517 | Muffler | — | 1986-05-20 |
| 4580656 | Absorbent retainer for absorbent type muffler | — | 1986-04-08 |
| 4574913 | Muffler with spark arresting function | — | 1986-03-11 |
| 4547942 | Method for producing a muffler | — | 1985-10-22 |
| 4404042 | Method for color-painting on chromium-plated surface | Tomoyuki Okada, Hideki Sugihara | 1983-09-13 |