Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7418009 | Method of transferring frames of variable length for a passive optical network that improves network efficiency and simplifies child apparatus | Susumu Tominaga, Masaharu Matsumoto, Takamitsu Shirai, Katsuhiko Hirashima, Kazuhiro Uchida +3 more | 2008-08-26 |
| 5852405 | Wireless LAN system | Norihiro Yoneda | 1998-12-22 |
| 5724346 | Means for maintaining connectable access points owing to movement of a mobile station between cells in a wireless LAN system | Naofumi Kobayashi, Osamu Sekihata | 1998-03-03 |
| 5682381 | Wireless LAN system | Osamu Sekihata, Hironobu Michiya | 1997-10-28 |
| 5590183 | Keep call back device | Norihiro Yoneda, Toshimitsu Ohba, Reiko Furuya | 1996-12-31 |
| 5588003 | LAN-WAN-LAN communication method, and apparatus for LAN-WAN connection | Toshimitsu Ohba, Osamu Sekihata | 1996-12-24 |
| 5187605 | Optical transceiver | Shinji Takao | 1993-02-16 |
| 4736370 | Transmitting data processing system | Masashi Hirome | 1988-04-05 |
| 4727592 | Optical communication system | Akihiro Okada, Shun Suzuki, Osamu Takahashi | 1988-02-23 |