Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871693 | Porous cordierite ceramics | Akira Ono, Mikio Kobayashi, Hiroshi Yokoo | 1989-10-03 |
| 4836994 | Calcium-phosphorus-apatite having novel properties and process for preparing the same | Akira Ono | 1989-06-06 |