Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10730098 | Method of manufacturing rolling bearing ring | Chikara Ohki | 2020-08-04 |
| 10525521 | Method of manufacturing rolling bearing ring and rolling bearing ring | Chikara Ohki | 2020-01-07 |
| 9185753 | Lighting system | Masaru Igaki | 2015-11-10 |
| 9022600 | LED illumination device | Akio Yabugami, Hiroaki Tsujii | 2015-05-05 |
| 8894268 | LED lightbulb | Masaru Igaki, Hirotaka Shimizu, Hideharu Osawa | 2014-11-25 |
| 8770793 | LED bulb | Saizo Suzuki | 2014-07-08 |
| 8593043 | LED lighting apparatus | Masaru Igaki | 2013-11-26 |