Issued Patents All Time
Showing 26–38 of 38 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7629908 | D/A conversion circuit, organic EL drive circuit and organic EL display device | Kouichi Matumoto, Shinichi Abe | 2009-12-08 |
| 7580631 | Optical transmission device for controlling optical level of transmission signal in optical transmission system | — | 2009-08-25 |
| 7551828 | Optical transmission device for controlling optical level of transmission signal in optical transmission system | Takuji Maeda, Kouji Nekoda, Masanori Kondoh, Taro Asao | 2009-06-23 |
| 7471050 | Organic EL drive circuit and organic EL display device | Masanori Fujisawa | 2008-12-30 |
| 7396013 | Lottery device | Masato Ito, Makoto Tanaka, Naoki Kawajiri | 2008-07-08 |
| 7394951 | Optical signal level control apparatus | Takuji Maeda, Hiroaki Tomofuji | 2008-07-01 |
| 7286758 | Method for switching transmission route, and optical transmission device | Hiroaki Tomofuji, Takuji Maeda, Takeshi Sakamoto, Ichiro Nakajima | 2007-10-23 |
| 6992647 | Organic EL drive circuit and organic EL display device using the same | Kouichi Hanada, Masanori Fujisawa | 2006-01-31 |
| 6987903 | Optical transmission network, optical transmission apparatus, dispersion compensator arrangement calculation apparatus and dispersion compensator arrangement calculation method | Ichiro Nakajima, Hiroaki Tomofuji, Takeshi Sakamoto | 2006-01-17 |
| 5555621 | Method of producing a catalytic converter | Hiroshi Tanabe, Tsutomu Imamura, Katsumi Amada | 1996-09-17 |
| 5410877 | Manifold converter | Yoichi Takahashi, Koji Noda | 1995-05-02 |
| 5038129 | Electromagnetic having magnetic shield | Tatsuya Oue | 1991-08-06 |
| 4953253 | Canister vacuum cleaner with automatic operation control | Norisuke Fukuda | 1990-09-04 |