Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8682178 | Method and system for setting timing of phase modulation of xPSK transmitter | Emmanuel Le Taillandier De Gabory | 2014-03-25 |
| 8639114 | DPSK modulation-demodulation method, and optical communication device and optical communication system using the same | Toshiharu Itou, Kiyoshi Fukuchi, Hitoshi Takeshita | 2014-01-28 |
| 8472812 | Optical communication system, optical communication method and optical communication apparatus | Toshiharu Ito, Kiyoshi Fukuchi | 2013-06-25 |
| 8346099 | Optical reception device and optical reception method | Kiyoshi Fukuchi | 2013-01-01 |
| 8165477 | Light receiving apparatus using DQPSK demodulation method, and DQPSK demodulation method | Kiyoshi Fukuchi, Toshiharu Ito, Hitoshi Takeshita | 2012-04-24 |
| 7646789 | Communication system including several communication terminals and server, its communication terminal, its server and data transfer control program | Masaki Umayabashi, Kazuo Takagi, Makoto Shibutani | 2010-01-12 |
| 7126321 | Apparatus and method for measuring transmission delay time of a signal propagation path between printed circuit boards | Kiyoshi Fukuchi | 2006-10-24 |
| 6680992 | Clock identification and reproduction circuit | Takenori Morikawa, Masaaki Soda | 2004-01-20 |
| 5631110 | Process of fabricating photo-mask used for modified illumination, projection aligner using the photo-mask and method of transferring pattern image from the photo-mask to photo-sensitive layer | Hiroyoshi Tanabe | 1997-05-20 |