Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5139099 | Excavation tool | Takeshi Hayashi, Shigeru Sato, Katsuaki Tsujimoto, Daishiro Miyazaki, Yoneo Hiwasa +1 more | 1992-08-18 |
| 5113954 | Excavation tool | Takeshi Hayashi, Shigeru Sato, Katsuaki Tsujimoto, Daishiro Miyazaki, Yoneo Hiwasa | 1992-05-19 |
| 4619698 | Cubic boron nitride-based very high pressure-sintered material for cutting tools | Fumihiro Ueda, Kaoru Kawada, Kazuo Yamamoto, Noriaki MIWA | 1986-10-28 |