Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8331337 | Session management apparatus, communication system, and session clear-out method | Akira Yanagisawa | 2012-12-11 |
| 7555127 | Quantum cryptography key distribution system and method | Yoshihiro Nambu | 2009-06-30 |
| 6928212 | Waveguide-type optical control device and process for producing the same | — | 2005-08-09 |
| 6879737 | Optical waveguide device and process for production thereof | — | 2005-04-12 |
| 6876782 | Integrated type optical waveguide device | Tadahiko Hanada | 2005-04-05 |
| 6778313 | Optical phase modulator and optical equalizer using the same | — | 2004-08-17 |
| 6714706 | Waveguide-type optical control device and process for producing the same | — | 2004-03-30 |
| 6385360 | Light control device and a method for manufacturing the same | — | 2002-05-07 |
| 5687265 | Optical control device and method for making the same | Hiroshi Nishimoto | 1997-11-11 |
| 4551588 | Timer device | Hiromi Kubota | 1985-11-05 |