Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4381912 | Extrusion die for forming a honeycomb structure | Shinichi Yamamoto, Mitsuru Asano, Toshihiko Ito | 1983-05-03 |
| 4368025 | Extrusion device for producing honeycomb structures | Junichiro Naito, Shinichi Yamamoto, Mitsuru Asano | 1983-01-11 |
| 4362495 | Extrusion device for forming a honeycomb structure | Junichiro Naito, Shinichi Yamamoto, Mitsuru Asano | 1982-12-07 |
| 4233351 | Ceramic honeycomb structure | Kazunari Okumura, Shinichi Yamamoto | 1980-11-11 |