Issued Patents All Time
Showing 26–36 of 36 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8796915 | LED light bulb | Yasumasa Ooya, Yasuhiro Shirakawa, Katsutoshi Nakagawa | 2014-08-05 |
| 8723412 | White lighting device | Katsutoshi Nakagawa, Yumi Ito | 2014-05-13 |
| 8710532 | White light emitting lamp and white LED lighting apparatus including the same | Yasuhiro Shirakawa, Daichi USUI | 2014-04-29 |
| 8426882 | White light-emitting lamp for illumination and illuminating device using the same | Ryo Sakai, Tsutomu Ishii, Yasuhiro Shirakawa, Yumi Ito | 2013-04-23 |
| 7696685 | Phosphor and method for producing same, and light-emitting device using same and method for manufacturing such device | — | 2010-04-13 |
| 7649310 | White LED, backlight using same and liquid crystal display | Tsutomu Ishii, Hajime Takeuchi, Yasuhiro Shirakawa, Yasumasa Ooya, Ryo Sakai | 2010-01-19 |
| 6418821 | Working tool | — | 2002-07-16 |
| D436513 | Socket for screwdriver | — | 2001-01-23 |
| D433296 | Socket for manual tool | — | 2000-11-07 |
| 5905333 | Low pressure mercury vapor electric discharge lamp and method of manufacturing the lamp | Chiharu Tomura, Natsuko Inada | 1999-05-18 |
| 4733126 | Phosphor and fluorescent lamp using the same | Kenji Terashima | 1988-03-22 |