Issued Patents 1989
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4871697 | Method of producing homogeneous silicon nitride sintered bodies | Noriyuki Ukai | 1989-10-03 |
| 4820665 | Ceramic sintered bodies and a process for manufacturing the same | Noriyuki Ukai, Mithuru Miyamoto, Tadaaki Matsuhisa | 1989-04-11 |
| 4810681 | Method of manufacturing dense cordierite | — | 1989-03-07 |