Issued Patents All Time
Showing 1–7 of 7 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| D598158 | Tubular lamp | Akio Watanabe, Naomitsu Aoki, Takafumi Ishida, Hidenori Shigeeda, Seiji Sakamoto +1 more | 2009-08-11 |
| D586939 | Tubular lamp | Akio Watanabe, Naomitsu Aoki, Takafumi Ishida, Hidenori Shigeeda, Seiji Sakamoto +1 more | 2009-02-17 |
| D586940 | Tubular lamp | Yuji Itakura, Seiji Sakamoto, Akio Watanabe | 2009-02-17 |
| D586941 | Tubular lamp | Yuji Itakura, Seiji Sakamoto, Akio Watanabe | 2009-02-17 |
| D586495 | Tubular lamp | Akio Watanabe, Naomitsu Aoki, Takafumi Ishida, Hidenori Shigeeda, Seiji Sakamoto +1 more | 2009-02-10 |
| D586494 | Tubular lamp | Akio Watanabe, Naomitsu Aoki, Takafumi Ishida, Hidenori Shigeeda, Seiji Sakamoto +1 more | 2009-02-10 |
| 5068517 | Printed strip heater | Takao Tsuyuki, Shigehiro Sato | 1991-11-26 |