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 | Toshiyuki Hamanaka, Kunikazu Hamaguchi, Seiichi Asami | 1989-09-26 |
| 4849275 | Cordierite honeycomb structural bodies | Kunikazu Hamaguchi, Toshiyuki Hamanaka, Seiichi Asami | 1989-07-18 |
| 4840827 | Ceramic honeycomb structural bodies and method of producing the same | Isao Mizutani, Toshihiko Hijikata | 1989-06-20 |
| 4830640 | Aromatic imide polymer hollow filaments | Asumaru Nakamura, Yoshihiro Kusuki | 1989-05-16 |