Issued Patents All Time
Showing 51–75 of 76 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6812623 | Piezoelectric transformer | Katsu Takeda, Takeshi Yamaguchi, Kojiro Okuyama, Katsunori Moritoki | 2004-11-02 |
| 6794796 | Piezoelectric transformer, piezoelectric transformer drive circuit, piezoelectric transformer drive method and cold cathode tube drive apparatus using piezoelectric transformer | Katsunori Moritoki, Toshiyuki Asahi, Kojiro Okuyama, Osamu Kawasaki | 2004-09-21 |
| 6737816 | Piezoelectric transformer, piezoelectric transformer drive circuit, piezoelectric transformer drive method and cold cathode tube drive apparatus using piezoelectric transformer | Katsunori Moritoki, Toshiyuki Asahi, Kojiro Okuyama, Osamu Kawasaki | 2004-05-18 |
| 6720705 | Method of driving a piezoelectric transformer and power source apparatus using the same | Takeshi Yamaguchi, Katsu Takeda, Katsunori Moritoki, Kojiro Okuyama | 2004-04-13 |
| 6583534 | Piezoelectric transformer, piezoelectric transformer drive circuit, piezoelectric transformer drive method and cold cathode tube drive apparatus using piezoelectric transformer | Katsunori Moritoki, Toshiyuki Asahi, Kojiro Okuyama, Osamu Kawasaki | 2003-06-24 |
| 6566821 | Drive device and drive method for a cold cathode fluorescent lamp | Takeshi Yamaguchi, Katsu Takeda, Katsunori Moritoki | 2003-05-20 |
| 6509700 | Apparatus and method for driving a cathode discharge tube | Takeshi Yamaguchi, Katsu Takeda, Katsunori Moritoki, Kojiro Okuyama | 2003-01-21 |
| 6509671 | Driving method and driving circuit for piezoelectric transformer, cold cathode tube emission device, liquid crystal panel and liquid crystal panel built-in apparatus | Katsu Takeda, Katsunori Moritoki, Takeshi Yamaguchi | 2003-01-21 |
| 6447019 | Tube joint | Masayuki Hosono | 2002-09-10 |
| 6433458 | Method and unit for driving piezoelectric transformer used for controlling luminance of cold-cathode tube | Katsunori Moritoki, Toshiyuki Asahi, Kojiro Okuyama, Osamu Kawasaki | 2002-08-13 |
| 6084336 | Piezoelectric transformer | Osamu Kawasaki, Katsunori Moritoki | 2000-07-04 |
| D365842 | Electronic calculator | Toru Suzuki | 1996-01-02 |
| D363732 | Electronic calculator | Toru Suzuki | 1995-10-31 |
| 5308684 | Burning pattern sheet | Yozo Oishi, Kazuhiro Tajiri, Takafumi Sakuramoto, Takashi Tominaga, Megumi Ashida | 1994-05-03 |
| D345990 | Electronic keyboard musical instrument | — | 1994-04-12 |
| 5204163 | Sheet for formation of burned pattern and burning label | Kazuhiro Tajiri, Takafumi Sakuramoto, Yozo Oishi | 1993-04-20 |
| 5195607 | Exhaust system for automotive engine | Yukiichiro Shimada, Nobuhiro Komatsu, Seiichi Tsuji, Satoshi Fujita, Hiromichi Kawamura +1 more | 1993-03-23 |
| D325201 | Portable television set | — | 1992-04-07 |
| 5088766 | Steering system for vehicle | Isao Hirashima, Masatoshi Takayama, Shigefumi Kohno | 1992-02-18 |
| 5085466 | Automobile steering system equipped with an air bag | Isao Hirashima, Masatoshi Takayama, Shigefumi Kohno | 1992-02-04 |
| D314958 | Portable television set | Akihiro Miyahara, Asao Sasaki | 1991-02-26 |
| D311734 | Portable television set | Akihiro Miyahara, Asao Sasaki | 1990-10-30 |
| 4934737 | Power tiltable steering wheel | — | 1990-06-19 |
| 4932493 | Ignition switch, brake and gearshift interlocks for a vehicle automatic transmission | Ushio Sakurai, Takashi Yoshimura | 1990-06-12 |
| D306582 | Portable television set | Akihiro Miyahara | 1990-03-13 |