Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4877670 | Cordierite honeycomb structural body and method of producing the same | — | 1989-10-31 |
| 4869944 | Cordierite honeycomb-structural body and a method for producing the same | Takashi Harada, Kunikazu Hamaguchi, Seiichi Asami | 1989-09-26 |
| 4851376 | Cordierite ceramic body having low thermal expansion coefficient, process for producing the same, and method of evaluating cordierite composition | Seiichi Asami | 1989-07-25 |
| 4849275 | Cordierite honeycomb structural bodies | Kunikazu Hamaguchi, Takashi Harada, Seiichi Asami | 1989-07-18 |