Issued Patents 2003
Showing 1–16 of 16 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6668548 | Exhaust emission control device of internal combustion engine | Takamitsu Asanuma, Shinya Hirota, Shunsuke Toshioka | 2003-12-30 |
| 6655133 | Exhaust gas purifier for internal combustion engine | Akira Mikami, Shinya Hirota, Kazuhiro Itoh, Takamitsu Asanuma, Koichi Kimura +4 more | 2003-12-02 |
| 6644023 | Exhaust emission control device of internal combustion engine | Shinya Hirota, Kazuhiro Itoh, Takamitsu Asanuma, Koichiro Nakatani, Koichi Kimura | 2003-11-11 |
| 6644022 | Exhaust gas purification device of internal combustion engine | Shinya Hirota, Kazuhiro Itoh, Takamitsu Asanuma, Koichiro Nakatani, Koichi Kimura | 2003-11-11 |
| 6634167 | Exhaust temperature raising apparatus and method for internal combustion engine | Shunsuke Toshioka, Shinya Hirota, Takamitsu Asanuma | 2003-10-21 |
| 6633631 | Digital key telephone system and extension terminal device thereof | Hiroshi Mano, Setsuo Kimura, Yoshihito Nagano, Masayuki Tsurusaki, Takashi Watanabe +4 more | 2003-10-14 |
| 6618239 | Key switch and keyboard | Kouki Takahashi, Kouji Ishikawa, Kiyokazu Moriizumi, Kiyoshi Wada, Katsumi Harada +3 more | 2003-09-09 |
| 6611064 | Semiconductor device and method for manufacturing the same | Takashi Kousaka, Naoya Suzuki, Masaaki Yasuda, Aizou Kaneda | 2003-08-26 |
| 6594991 | Exhaust purifying method and apparatus of an internal combustion engine | Kazuhiro Itoh, Shinya Hirota, Takamitsu Asanuma, Koichi Kimura, Koichiro Nakatani | 2003-07-22 |
| 6588204 | Device for purifying the exhaust gas of an internal combustion engine | Shinya Hirota, Kazuhiro Itoh, Koichiro Nakatani, Koichi Kimura | 2003-07-08 |
| D475726 | Engine-driven welding machine | Koji Suga, Sanpei Sato, Kenji Katsuki, Shoichi Fujimoto | 2003-06-10 |
| 6568178 | Device for purifying the exhaust gas of an internal combustion engine | Shinya Hirota, Koichiro Nakatani, Kazuhiro Itoh, Takamitsu Asanuma, Koichi Kimura | 2003-05-27 |
| 6546721 | Exhaust gas purification device | Shinya Hirota, Kazuhiro Itoh, Koichiro Nakatani, Koichi Kimura, Takamitsu Asanuma | 2003-04-15 |
| 6522971 | Information input/output system for offering various services to a user terminal through a communication network | — | 2003-02-18 |
| 6510686 | Exhaust gas purifier for internal combustion engine and method for purifying exhaust gas | Koichi Kimura, Shinya Hirota, Kazuhiro Itoh, Takamitsu Asanuma, Koichiro Nakatani | 2003-01-28 |
| 6502391 | Exhaust emission control device of internal combustion engine | Shinya Hirota, Shunsuke Toshioka | 2003-01-07 |