Issued Patents All Time
Showing 1–17 of 17 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5532856 | Planar optical mesh-connected tree interconnect network | Yao Li, Richard A. Linke, Yuh-Dauh Lyuu, Shigeru Kawai, Keiichi Kubota | 1996-07-02 |
| 5527732 | Method for fabricating semiconductor laser and photo detecting arrays for wavelength division multiplexing optical interconnections | Shigeo Sugou | 1996-06-18 |
| 5434434 | Semiconductor optical device having device regions and diffraction gratings | Shigeru Kawai | 1995-07-18 |
| 5424559 | Surface emitting photonic switching structure | — | 1995-06-13 |
| 5394423 | Surface emitting semiconductor laser | — | 1995-02-28 |
| 5340998 | Semiconductor surface light emitting and receiving heterojunction device | — | 1994-08-23 |
| 5153758 | Driving method and apparatus for a pnpn semiconductor device | Yoshiharu Tashiro, Takahiro Numai | 1992-10-06 |
| 5136345 | Semiconductor layer comprising cyclically stacked narrow, intermediate, and wide band gap semiconductor films | — | 1992-08-04 |
| 5093875 | Optical interconnection apparatus | Ichiro Ogura, Yoshiharu Tashiro, Shigeru Kawai | 1992-03-03 |
| 5084748 | Semiconductor optical memory having a low switching voltage | Ichiro Ogura, Yoshiharu Tashiro, Mitsunori Sugimoto | 1992-01-28 |
| 5065044 | Method for driving a pnpn semiconductor device | Ichiro Ogura, Yoshiharu Tashiro | 1991-11-12 |
| 5059788 | Optical logic device with PNPN detection and laser diode output | Yoshiharu Tashiro | 1991-10-22 |
| 5028969 | Semiconductor device for a space modulation matrix and method for driving a space modulation matrix | Yoshiharu Tashiro, Mitsunori Sugimoto, Keiichi Kubota, Shigeru Kawai, Ichiro Ogura | 1991-07-02 |
| 5021694 | Circuit for driving a gated p-n-p-n device | Yoshiharu Toshiro | 1991-06-04 |
| 4910571 | Optical semiconductor device | Yoshiharu Tashiro | 1990-03-20 |
| 4864168 | Process for controlling an optical pnpn thyristor to be driven | Yoshiharu Tashiro | 1989-09-05 |
| 4829357 | PNPN thyristor | — | 1989-05-09 |