Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9116176 | Optical current transformer for gas-insulated apparatus | Wei Zhang, Hiroyuki Nakamichi, Tatsushi Yamaguchi, Daigorou Shiozawa | 2015-08-25 |
| 8847084 | Insulating spacer with built-in optical fiber | Wei Zhang, Tatsushi Yamaguchi, Daigorou Shiozawa | 2014-09-30 |
| 7140334 | Valve train for internal combustion engine | Makoto Segawa, Yasuaki Asaki, Toshihiro Akiwa, Junya Iino | 2006-11-28 |
| 4744339 | Centrifugal spark-advance control device | Shigeru Nagai, Yasuhide Sakamoto, Hiromitsu Sato, Hideji Ohura, Masayuki Kumada | 1988-05-17 |