Issued Patents 1989
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4869944 | Cordierite honeycomb-structural body and a method for producing the same | Takashi Harada, Toshiyuki Hamanaka, Kunikazu Hamaguchi | 1989-09-26 |
| 4856472 | Cylinder head with ceramic precombustion chamber | Akinori Wakasa, Minoru Machida, Yasuhiro Miyakawa | 1989-08-15 |
| 4851376 | Cordierite ceramic body having low thermal expansion coefficient, process for producing the same, and method of evaluating cordierite composition | Toshiyuki Hamanaka | 1989-07-25 |
| 4849275 | Cordierite honeycomb structural bodies | Kunikazu Hamaguchi, Toshiyuki Hamanaka, Takashi Harada | 1989-07-18 |