Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10104732 | LED drive method and LED drive device | Makoto Nakamura, Mamoru Kitamura, Keisuke Fukuda | 2018-10-16 |
| 9872353 | LED lighting device and LED illuminating device | Mamoru Kitamura, Keisuke Fukuda | 2018-01-16 |
| 9831890 | Semiconductor device, power supply device and control method for semiconductor device | Keisuke Fukuda, Mamoru Kitamura | 2017-11-28 |
| 9510417 | LED drive method and LED drive device | Makoto Nakamura, Mamoru Kitamura, Keisuke Fukuda | 2016-11-29 |
| 4341938 | Method and apparatus for seam-welding steel pipes | Hiroyoshi Matsubara, Kenji Takeshige, Tatsumi Osuka, Takashi Nagamine, Osamu Hirano +2 more | 1982-07-27 |
| 4320277 | Thick welded steel pipe of large diameter and production thereof | Tadaaki Taira, Kiyoteru Hirabayashi, Hiroyuki Ichinose, Osamu Hirano | 1982-03-16 |
| 4238659 | Preventing magnetization of pipe blank in GMA welding | Fusao Koshiga, Jinkichi Tanaka, Itaru Watanabe, Toshifumi Kojima, Hiroyoshi Matsubara +4 more | 1980-12-09 |