Issued Patents 1989
Showing 1–5 of 5 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4833507 | Electron emission device | Akira Shimizu, Takeo Tsukamoto, Akira Suzuki, Masao Sugata, Isamu Shimoda | 1989-05-23 |
| 4830498 | Position detecting device | Yoshifumi Nishimoto, Takao Kariya, Yasuo Kawai, Akio Atsuta | 1989-05-16 |
| 4825082 | Electron emitting apparatus | Takeo Tsukamoto, Akira Shimizu, Akira Suzuki, Masao Sugata, Isamu Shimoda | 1989-04-25 |
| 4812662 | Alignment system using an electron beam | Susumu Goto, Yuichi Kumabe | 1989-03-14 |
| 4810934 | Electron emission device | Isamu Shimoda, Takeo Tsukamoto, Akira Shimizu, Akira Suzuki, Masao Sugata | 1989-03-07 |