Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5519874 | Application execution control method and system for servicing subscribers via a switchboard connected to a computer using an application management table | Takuo Tsuzuki, Noboru Mizuhara, Tetsuo Sakuma, Tomoaki Tsunoda | 1996-05-21 |
| 5197096 | Switching method and apparatus having subscriber state management function | Tetsuo Sakuma, Noboru Mizuhara, Tomoaki Tsunoda | 1993-03-23 |