Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11362894 | Wiring management system and wiring management method | Hiroshi Yamamoto, Hiroki Kawahara, Katsuhiro Araya, Toshiyuki Oka | 2022-06-14 |
| 11265628 | Optical transmission system and optical transmission method | Katsuhiro Araya, Toshiyuki Oka, Hiroki Kawahara, Hiroshi Yamamoto | 2022-03-01 |
| 11251877 | Optical reception device | Hiroki Kawahara, Hiroshi Yamamoto, Katsuhiro Araya, Toshiyuki Oka | 2022-02-15 |
| 7327676 | Data transmission control method, program therefor and data transmission unit using the same | Shigeru Teruhi, Hidetoshi Mori | 2008-02-05 |
| 6598092 | Trunk transmission network | Masahito Tomizawa, Shinji Matsuoka | 2003-07-22 |
| 6202082 | Trunk transmission network | Masahito Tomizawa, Shinji Matsuoka | 2001-03-13 |
| 6034974 | Channel-selection-type demultiplexing circuit | Shinji Matsuoka, Masahito Tomizawa | 2000-03-07 |
| 5751720 | Pointer processor and pointer processing scheme for SDH/SONET transmission system | Shinji Matsuoka | 1998-05-12 |
| 5631896 | Hitless path switching apparatus and method | Nobuyuki Kawase, Yoshiaki Yamabayashi | 1997-05-20 |