Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4892586 | Concrete composition for roller compacted placing method | Yoshiharu Watanabe, Mineo Ito | 1990-01-09 |
| 4861378 | Cement additive containing superplasticizer and bentonite | Yoshiharu Watanabe, Mineo Ito, Hitoshi Moriyama | 1989-08-29 |
| 4849901 | Substrate exposure apparatus with flatness detection and alarm | — | 1989-07-18 |
| RE32795 | Exposure apparatus for production of integrated circuit | Toshio Matsuura, Kyoichi Suwa, Akikazu Tanimoto | 1988-12-06 |
| 4666273 | Automatic magnification correcting system in a projection optical apparatus | Satoru Anzai, Hiroshi Tanaka, Kyoichi Suwa | 1987-05-19 |
| 4465368 | Exposure apparatus for production of integrated circuit | Toshio Matsuura, Kyoichi Suwa, Akikazu Tanimoto | 1984-08-14 |