Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5339457 | Superconductive electromagnetic wave mixer and superconductive electromagnetic wave mixing apparatus employing the same | Katsuhiko Shinjo, Keisuke Yamamoto, Norio Kaneko | 1994-08-16 |
| 5334835 | Probe drive mechanism and electronic device which uses the same | Masaru Nakayama, Osamu Takamatsu, Takayuki Yagi, Keisuke Yamamoto, Yasuhiro Shimada +1 more | 1994-08-02 |
| 5289402 | Recording medium, recording method, and readout method | Keisuke Yamamoto, Fumio Kishi, Taiko Motoi, Norio Kaneko | 1994-02-22 |