Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6726977 | Cordierite honeycomb structure and manufacturing method thereof | Kazuhiko Kumazawa | 2004-04-27 |
| 5629067 | Ceramic honeycomb structure with grooves and outer coating, process of producing the same, and coating material used in the honeycomb structure | Wataru Kotani, Yoshiyuki Kasai | 1997-05-13 |
| 5185110 | Method of producing porous ceramic filter, using cordierite composition including talc and silica powders | Kazuhiko Kumazawa, Seiichi Asami | 1993-02-09 |
| 5069697 | Porous ceramic honeycomb filter and method of producing the same | Takashi Harada, Toshiyuki Hamanaka | 1991-12-03 |
| 5030398 | Method of producing a cordierite honeycomb structural body | Toshiyuki Hamanaka, Keiichiro Watanabe, Seiichi Asami | 1991-07-09 |
| 4869944 | Cordierite honeycomb-structural body and a method for producing the same | Takashi Harada, Toshiyuki Hamanaka, Seiichi Asami | 1989-09-26 |
| 4849275 | Cordierite honeycomb structural bodies | Toshiyuki Hamanaka, Takashi Harada, Seiichi Asami | 1989-07-18 |