Issued Patents All Time
Showing 51–57 of 57 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 8803105 | Optical field enhancement device | Masayuki Naya | 2014-08-12 |
| 8305010 | Light-emitting diode lighting device with step-down chopper | Masahiko Kamata, Hajime Osaki, Hirokazu Otake, Takuro Hiramatsu, Toshiyuki Hiraoka +1 more | 2012-11-06 |
| 7847490 | Self-ballasted fluorescent lamp and lighting apparatus | Hiroshi Kubota, Mari Nakamura, Ryota Irie, Katsuyuki Kobayashi, Hitoshi Kawano +2 more | 2010-12-07 |
| 7256547 | Self-ballasted fluorescent lamp and luminaire | Hiroshi Kubota, Toshiyuki Hiraoka, Tsutomu Araki, Shinichiro Matsumoto, Mari Nakamura | 2007-08-14 |
| 6437516 | Unsaturating transformer, an electronic ballast using the transformer, and a self-ballasted | Hajime Osaki | 2002-08-20 |
| 6252357 | Self-ballasted fluorescent lamp and lighting fixture | Toshiya Tanaka, Tsutomu Araki, Hajime Osaki, Kazuyuki Uratani, Fuminori Nakaya | 2001-06-26 |
| 6107747 | Self ballasted fluorescent lamp and lighting fixture | Hajime Osaki | 2000-08-22 |