Issued Patents All Time
Showing 1–18 of 18 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12245342 | Illumination device including control device that varies melanopic ratio of light | Takehiro Sagawa, Naoki Nakamura | 2025-03-04 |
| 11880016 | Light emitting device | Kosuke Gomi | 2024-01-23 |
| 8981402 | White LED lighting device, and optical lens | Fumiaki Koizumi | 2015-03-17 |
| 8740418 | Optical element and light emitting device | — | 2014-06-03 |
| 8646953 | Light guiding body and light emitting device | Keiichi Mochizuki | 2014-02-11 |
| 8616746 | Optical element and light-emitting device | — | 2013-12-31 |
| 8591060 | Light emitting device and bulb-type LED lamp | — | 2013-11-26 |
| 7978984 | Data communication unit using light-emitting diode for data communication, and electronic device | — | 2011-07-12 |
| 7372430 | Light emitting device and light receiving and emitting driving circuit | — | 2008-05-13 |
| 6914940 | Device for improving voice signal in quality | Masato Tanaka, Eiji Shinsho, Meizhong Wang, Kazuhiko Seki | 2005-07-05 |
| 6160838 | Spread spectrum transmitter, spread spectrum receiver and spread spectrum communication method and automatic gain control circuit for spread spectrum receiver | Kazuhiko Seki | 2000-12-12 |
| 5876014 | Motor damper | Seiichiro Noritake | 1999-03-02 |
| 5723396 | Dielectric composition for high frequencies | Eiichirou Hirose, Shinji Sakai | 1998-03-03 |
| 4868711 | Multilayered ceramic capacitor | Masahiro Hirama, Hiroaki Tanidokoro, Naoto Kitahara, Kazuyasu Hikita | 1989-09-19 |
| 4835656 | Multi-layered ceramic capacitor | Naoto Kitahara, Hiroaki Tanidokoro, Masahiro Hirama, Kazuyasu Hikita | 1989-05-30 |
| 4746468 | Method of preparing ceramic microspheres | Yoshiharu Ozaki, Mitsushi Wadasako, Toshihiro Kasai | 1988-05-24 |
| 4636248 | Method for production of dielectric powder | Yasuyuki Ogata | 1987-01-13 |
| 4216377 | Light scattering smoke detector | Mitsuo Hasegawa, Takashi Suzuki, Akira Yokota | 1980-08-05 |