Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6046459 | Method and system for charged particle beam exposure | Yoshihisa Ooae, Kazushi Ishida, Hiroshi Yasuda, Akiyoshi Tsuda, Hitoshi Tanaka | 2000-04-04 |
| 5981118 | Method for charged particle beam exposure with fixed barycenter through balancing stage scan | Yoshihisa Ooae, Kazushi Ishida, Hiroshi Yasuda, Akiyoshi Tsuda, Hitoshi Tanaka | 1999-11-09 |
| 5917360 | Differential current-switch circuit, D/A conversion circuit and method of transient response reduction | — | 1999-06-29 |
| 5404018 | Method of and an apparatus for charged particle beam exposure | Hiroshi Yasuda, Yoshihisa Oae, Akio Yamada, Hisayasu Nishino | 1995-04-04 |
| 5368613 | Electron beam exposure apparatus | Akio Yamada | 1994-11-29 |
| 5223719 | Mask for use in a charged particle beam apparatus including beam passing sections | Yasushi Takahashi, Kiichi Sakamoto, Yoshihisa Oae, Hiroshi Yasuda | 1993-06-29 |
| 5208560 | Signal transmission circuit | — | 1993-05-04 |
| 5134398 | Digital-to-analog converter having a circuit for compensating for variation in output dependent on temperature change | Hidefumi Yabara | 1992-07-28 |
| 4853870 | Electron beam exposure system | Jun-ichi Kai, Hiroshi Yasuda, Kenichi Kawashima | 1989-08-01 |
| 4651033 | Device for complementary input signals using two circuits with different threshold voltages | Toshitaka Tsuda | 1987-03-17 |
| 4607333 | Electron beam exposure apparatus | Hiroshi Yasuda | 1986-08-19 |