Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5656245 | Catalytic converter for cleaning exhaust gas | Masakatsu Takahashi, Makoto Tajima | 1997-08-12 |
| 5622372 | Metal seal ring and a method of producing the same | Masakatsu Takahashi, Shuji Hoshino | 1997-04-22 |