Issued Patents All Time
Showing 1–13 of 13 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11333697 | Three-dimensional surface potential distribution measurement system | Masaaki Furukawa, Tetsuo Yoshimitsu, Yuichi Tsuboi, Akiko Kumada, Hisatoshi Ikeda | 2022-05-17 |
| 10041980 | Three-dimensional surface potential distribution measurement apparatus | Masaaki Furukawa, Kodai Ushiwata, Tetsuo Yoshimitsu, Yuichi Tsuboi, Akiko Kumada +1 more | 2018-08-07 |
| 9714968 | Surface potential distribution measuring device | Masaaki Furukawa, Yuichi Tsuboi, Tetsuo Yoshimitsu, Akiko Kumada, Hisatoshi Ikeda | 2017-07-25 |
| 9702915 | Surface potential distribution measuring device and surface potential distribution measuring method | Yuichi Tsuboi, Shinichiro Yamada, Tetsuo Yoshimitsu, Akiko Kumada, Hisatoshi Ikeda | 2017-07-11 |
| 5507518 | Torsion beam type suspension and method for production thereof | Keiji Nakahara, Kenji Saito | 1996-04-16 |
| 5257801 | Independent wheel suspension apparatus for vehicle | Atsushi Matsuzawa, Atsushi Enomoto, Shinji Kawano | 1993-11-02 |
| 4515252 | Piston stroke responsive vortex-flow shock absorber | Naoto Fukushima, Kazuro Iwata | 1985-05-07 |
| 4502575 | Shock absorber | Naoto Fukushima, Kazuroh Iwata | 1985-03-05 |
| 4475635 | Vortex flow shock absorber with one-way valve | Kazuroh Iwata, Naoto Fukuhsima | 1984-10-09 |
| 4457409 | Vortex shock absorber with absorbing force relief means | Naoto Fukushima, Kazuroh Iwata | 1984-07-03 |
| 4442925 | Vortex flow hydraulic shock absorber | Naoto Fukushima, Kazuroh Iwata, Keiichiro Yabuta | 1984-04-17 |
| 4418802 | Shock absorber | Naoto Fukushima, Kazuroh Iwata | 1983-12-06 |
| 4407397 | Shock absorber with pressure-relief mechanism | Naoto Fukushima, Kazuroh Iwata | 1983-10-04 |