Issued Patents All Time
Showing 1–6 of 6 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9540587 | Lubricating oil composition for transmissions | Hajime Nakao, Hitoshi Komatsubara, Kazunori Ishikawa | 2017-01-10 |
| 6500573 | Humidifer device for fuel cells and operating system thereof | Takashi Simazu, Hiroshi Aoki, Tomohisa Wakasugi, Takahiko Asaoka, Kazutaka Hiroshima +1 more | 2002-12-31 |
| 5739505 | Temperature control method and apparatus for an electric furnace | Tamotsu Hasegawa, Norihiro Amano, Masuji Oshima | 1998-04-14 |
| 4265596 | Axial flow fan with auxiliary blades | Haruo Katagiri, Kenji Fujikake | 1981-05-05 |
| 4222710 | Axial flow fan having auxiliary blade | Haruo Katagiri, Kenji Fujikake | 1980-09-16 |
| 4189281 | Axial flow fan having auxiliary blades | Haruo Katagiri, Kenji Fujikake | 1980-02-19 |