Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8555110 | Apparatus, method, and program configured to embed a standby unit based on an abnormality of an active unit | — | 2013-10-08 |
| 6160816 | Subscriber-line transmission apparatus | Kazuo Tanaka | 2000-12-12 |
| 5640387 | Digital loop carrier apparatus for large volume digital signal transmission | Shigeki Takahashi, Tsuyoshi Ueshima, Kazuo Tanaka | 1997-06-17 |
| 5453989 | Subscriber digital transmission system | Seiji Kitayama, Hiroyuki Matsumoto | 1995-09-26 |