Issued Patents All Time
Showing 1–8 of 8 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12302376 | Wireless communication device, wireless communication system, control circuit, storage medium, and wireless communication method | Fumihiro Hasegawa, Shigenori Tani, Hiroyasu Sano, Yoshihisa Kagawa | 2025-05-13 |
| 7181000 | Voice transmission device and voice transmission system | — | 2007-02-20 |
| 6498833 | Channel check test system | Yukimasa Sugino, Shigeaki Suzuki | 2002-12-24 |
| 6373597 | Facsimile signal transmission system | Shigeaki Suzuki | 2002-04-16 |
| 6324260 | Channel check test system | Yukimasa Sugino, Shigeaki Suzuki | 2001-11-27 |
| 6288796 | Equipment and method for transmitting facsimile signal | Shigeaki Suzuki | 2001-09-11 |
| 6147973 | Signal discrimination apparatus, a method for discriminating a signal, and a signal transmitting apparatus for voiceband signals | Yukimasa Sugino, Yushi Naito, Hideaki Ebisawa | 2000-11-14 |
| 5960077 | Echo canceller | Tomoko Ishii, Shigeaki Suzuki | 1999-09-28 |