Issued Patents All Time
Showing 51–65 of 65 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7935975 | White LED lamp and backlight using the same, and liquid crystal display device using the backlight | Tsutomu Ishii, Hajime Takeuchi, Ryo Sakai, Yasumasa Ooya | 2011-05-03 |
| 7936418 | White light-emitting device and manufacturing method thereof, and backlight and liquid crystal display device using the same | Tsutomu Ishii, Hajime Takeuchi, Yasumasa Ooya, Ryo Sakai | 2011-05-03 |
| 7884544 | Semiconductor light emitting device having mixed light emission | Hatsuo Takezawa, Kenji Shimomura, Hiroaki Oshio, Tsutomu Ishii | 2011-02-08 |
| 7857992 | White light-emitting lamp, backlight using same, display and illuminating device | Tsutomu Ishii, Yasumasa Ooya | 2010-12-28 |
| 7709855 | Light-emitting device, backlight using same, and liquid crystal display | Yasumasa Ooya, Ryo Sakai, Hajime Takeuchi, Tsutomu Ishii | 2010-05-04 |
| 7649310 | White LED, backlight using same and liquid crystal display | Tsutomu Ishii, Hajime Takeuchi, Yasumasa Ooya, Ryo Sakai, Masahiko Yamakawa | 2010-01-19 |
| 7639318 | Backlight and liquid crystal display using same | Hajime Takeuchi, Ryo Sakai, Yasumasa Ooya, Tsutomu Ishii, Yukihiro Takenami | 2009-12-29 |
| 6811923 | ACTIVE MATERIAL FOR ANODE OF SECONDARY CELL AND METHOD FOR PRODUCTION THEREOF AND NON-AQUEOUS ELECTROLYTE SECONDARY CELL, AND RECYCLED ELECTRONIC FUNCTIONAL MATERIAL AND METHOD FOR RECYCLING ELECTRONIC FUNCTIONAL MATERIAL | Ryo Sakai, Kotaro Iyasu, Nobukazu Suzuki, Hisayasu Mitsui | 2004-11-02 |
| 6753112 | Positive electrode active material and non-aqueous secondary battery using the same | Yasumasa Ooya, Ryo Sakai, Koshin Tanaka, Kazuki Amemiya, Hajime Takeuchi +1 more | 2004-06-22 |
| 6686093 | Positive electrode active material for nonaqueous electrolytic solution secondary battery and nonaqueous electrolytic solution secondary battery therewith | Ryo Sakai, Yasumasa Ooya, Koshin Tanaka, Hajime Takeuchi | 2004-02-03 |
| 6111465 | Amplifying unit comprising an input transformer capable of contributing to a wider frequency band of a broadband amplifier | Yuji Kakuta, Yoshiaki Fukasawa, Yoshiaki Wakabayashi | 2000-08-29 |
| 6028487 | Negative-feedback amplifier circuit capable of independently controlling a gain and an impedance | Yuji Kakuta, Yoshiaki Fukasawa, Yoshiaki Wakabayashi | 2000-02-22 |
| 5523669 | Charging circuit capable of supplying DC voltage directly to power supply circuit when battery is removed | Setsuya Oku | 1996-06-04 |
| 4515706 | Rare earth oxyfluoride barium fluoride halide phosphor | Takeshi Takahara, Tsutomu Ishii | 1985-05-07 |
| 4423128 | Method of making picture tube fluorescent screen | Norio Koike, Takeshi Takahara, Kunihiro Ikari | 1983-12-27 |