Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6781985 | Time-division multiplexer | Peter James Feder, Shoichi Sageshima | 2004-08-24 |
| 6165289 | Water-resistant long-life rolling bearing | Yoichi Matsumoto, Tomonobu Yoshikawa | 2000-12-26 |
| 5997661 | Rolling bearing | Yoichi Matsumoto, Kazuo Sekino | 1999-12-07 |
| 5875244 | Transmission apparatus for relaying different types of trunk signals | — | 1999-02-23 |
| 5725688 | Rolling bearing | Hiromi Sugi, Kenji Yamamura | 1998-03-10 |
| 5630668 | Thrust needle-shaped roller bearing, rolling bearing, and cage of the thrust needle-shaped roller bearing | Katsuhiro Ikezawa, Hiroshi Iwasa, Yasuhiro Nomura, Toshiro Kawamura, Hiroshi Narai +5 more | 1997-05-20 |
| 5400321 | Central monitoring system of a multiplex subscriber loop carrier | — | 1995-03-21 |
| 5329584 | Interface circuit to quickly establish a loop current | — | 1994-07-12 |
| 5293420 | Ring trip circuit | — | 1994-03-08 |
| 5129739 | Bearing with dynamic pressure grooves and method for manufacturing the same | Hiromitsu Asai, Hiromi Sugi | 1992-07-14 |
| 4912699 | Pulse code modulation terminal equipment | — | 1990-03-27 |