Issued Patents All Time
Showing 1–11 of 11 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11794891 | Aerial vehicle equipped with multicopter mechanism | Seiji Tsutsumi, Keiichiro Fujimoto | 2023-10-24 |
| D903573 | Propeller blade | — | 2020-12-01 |
| D885298 | Propeller blade | — | 2020-05-26 |
| 8219363 | Jet noise modeling method, jet noise analyzing method, and aircraft designing method | Noboru Masukawa, Kenji Hayama | 2012-07-10 |
| 7069199 | Grid convergence solution computation system | Akio Ochi | 2006-06-27 |
| 5639215 | Helicopter rotor equipped with flaps | Eiichi Yamakawa, Noboru Kobiki | 1997-06-17 |
| 4776929 | Process for production of quaternary ammonium hydroxides | Tetsuo Aoyama, Jiro Ishikawa, Naoto Sakurai | 1988-10-11 |
| 4434377 | Electric power-feeding structure | Hiroshi Den, Takeo Kuroki | 1984-02-28 |
| 4434481 | Traveling wave surface acoustic wave transducer | Minoru Toda | 1984-02-28 |
| 4269380 | Flat type cable suspension structure | Masao Shimizu, Hiroshi Den | 1981-05-26 |
| 4234146 | Flat type cable suspension structure | Masao Shimizu, Hiroshi Den | 1980-11-18 |