Issued Patents All Time
Showing 26–43 of 43 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5287422 | Integrated type optical node and optical information system using the same | Uuichi Handa, Hidetoshi Nojiri | 1994-02-15 |
| 5233187 | Multi-wavelength light detecting and/or emitting apparatuses having serially arranged grating directional couplers | Shinsuke Takeuchi | 1993-08-03 |
| 5222163 | Integrated type optical node and optical information system using the same | Uuichi Handa, Hidetoshi Nojiri | 1993-06-22 |
| 5220573 | Optical apparatus using wavelength selective photocoupler | Hidetoshi Nojiri | 1993-06-15 |
| 5155736 | Semiconductor laser element capable of changing emission wavelength, and method of driving the same | Takeo Ono | 1992-10-13 |
| 5148302 | Optical modulation element having two-dimensional phase type diffraction grating | Akihiko Nagano, Etsuro Kishi, Ryoji Fujiwara, Yukitoshi Ohkubo, Michiyo Nishimura +2 more | 1992-09-15 |
| 5140149 | Optical apparatus using wavelength selective photocoupler | Hidetoshi Nojiri | 1992-08-18 |
| 5131060 | Optical waveguide modulator communications device and method of modulating light using same | — | 1992-07-14 |
| 5109444 | Integrated type optical node and optical information system using the same | Uuichi Handa, Hidetoshi Nojiri | 1992-04-28 |
| 5088097 | Semiconductor laser element capable of changing emission wavelength, and method of driving the same | Takeo Ono | 1992-02-11 |
| 5013141 | Liquid crystal light modulation device | — | 1991-05-07 |
| 5002369 | Nonlinear optical element having electrodes on two side surfaces of nonlinear medium through insulating layers | — | 1991-03-26 |
| 4926177 | Optical analog-digital converter provided with a nonlinear optical element and an optical feedback system for the output lights of said element | — | 1990-05-15 |
| 4856869 | Display element and observation apparatus having the same | Yasuyuki Watanabe, Masato Yamanobe, Yukitoshi Ohkubo, Akihiro Nagano | 1989-08-15 |
| 4850681 | Optical modulation device | Masao Yamanobe, Yasuyuki Watanabe, Yukitoshi Ohkubo, Tomoyuki Umezawa, Chiori Mochizuki +5 more | 1989-07-25 |
| 4729640 | Liquid crystal light modulation device | — | 1988-03-08 |
| 4707743 | Method and apparatus for image conversion with multiple exposures for filtering | Jun Tokumitsu | 1987-11-17 |
| 4481233 | Process for producing solid-state color image pickup array | Kojiro Yokono, Seiichi Takahashi | 1984-11-06 |