Issued Patents 1997
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5679464 | Joined product of heat-resisting alloys and method for joining heat-resisting alloys | Akira Okamoto | 1997-10-21 |
| 5618498 | Method for brazing heat resisting alloy having on its surface insulating oxide film and preheat type metallic carrier for purification of exhaust gas and process for producing the same | Akira Okamoto, Kouji Yoshizaki | 1997-04-08 |