Issued Patents All Time
Showing 101–113 of 113 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4835117 | Manufacturing method for semiconductor laser with mesa stripe | Yasuo Ohba, Masayuki Ishikawa, Motoyuki Yamamoto, Hideto Sugawara | 1989-05-30 |
| 4825141 | DC power supply device | — | 1989-04-25 |
| 4809287 | Double-heterostructure semiconductor with mesa stripe waveguide | Yasuo Ohba, Miyoko Watanabe, Hideto Sugawara, Masayuki Ishikawa, Motoyuki Yamamoto | 1989-02-28 |
| 4792958 | Semiconductor laser with mesa stripe waveguide structure | Yasuo Ohba, Masayuki Ishikawa, Motoyuki Yamamoto, Hideto Sugawara | 1988-12-20 |
| 4760259 | Radiation image recording and reproducing method | — | 1988-07-26 |
| 4743502 | Magneto-optical medium | Toshihiko Yoshitomi, Yoshimitsu Kobayashi, Jun Sasaki | 1988-05-10 |
| 4725941 | High-voltage/large-current generator apparatus and method for generating high-voltage/large-current | — | 1988-02-16 |
| 4705953 | Radiation image recording and read-out apparatus with object data output capability | Tsutomu Kimura | 1987-11-10 |
| 4691321 | Semiconductor laser device having current confining and built-in waveguide structure | Nawoto Motegi, Naohiro Shimada, Masaki Okajima | 1987-09-01 |
| 4600917 | Gate-turn-off thyristor failure detecting circuit | Nagataka Seki, Shunichi Koike | 1986-07-15 |
| 4486482 | Vacuum heat insulator | Nobuyuki Kobayashi, Yoritsune Abe, Katuo Shibata | 1984-12-04 |
| 4472328 | Process for producing porous film or sheet | Masaaki Sugimoto, Kunio Bizen, Tsunemitsu Hasegawa, Masahiro Morita | 1984-09-18 |
| 4275430 | DV/DT Protection circuit device for gate turn-off thyristor | Nagataka Seki | 1981-06-23 |