Issued Patents All Time
Showing 51–54 of 54 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4666467 | High-strength metal working tool made of a zirconia-type sintered material | Yoshihiro Matsumoto, Koji Tsukuma, Takaaki Tsukidate | 1987-05-19 |
| 4530868 | Elastomer-coated cloth composite | Hideo Shinmi | 1985-07-23 |
| 4346068 | Process for preparing high-purity .alpha.-type silicon nitride | Kiyoshi Kasai, Takaaki Tsukidate | 1982-08-24 |
| 4268452 | Noncurable sealing materials | Katsutoshi Mine, Tsuneo Maruyama | 1981-05-19 |