Issued Patents All Time
Showing 26–44 of 44 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6657412 | Pulse width modulation method, pulse width modulator and power converter | Keijiro Sakai, Toshiaki Okuyama, Hiroshi Fujii, Hiroyuki Tomita, Tatsuo Ando +2 more | 2003-12-02 |
| 6642689 | Control apparatus for power converter | Toshiaki Okuyama, Takashi Ogawa, Tetsuo Kojima, Kiyoshi Nakata | 2003-11-04 |
| 6611124 | Control apparatus of induction motor | — | 2003-08-26 |
| 6556460 | Method for controlling a vehicle provided with an electric power converter | Toshiaki Okuyama, Tetsuo Kojima, Kiyoshi Nakata, Akira Horie | 2003-04-29 |
| 6556464 | PWM converter system | Keijirou Sakai, Toshiaki Okuyama, Kinya Nakatsu, Hiroshi Fujii, Junji Kato +1 more | 2003-04-29 |
| 6496397 | Inverter device | Keijiro Sakai, Toshiaki Okuyama, Kinya Nakatsu, Hiroshi Fujii, Junji Kato +1 more | 2002-12-17 |
| 6262294 | Process for continuously producing monomer components from aromatic polyester | Takeshi Sako, Masazumi Godo, Kunio Miura, Masayuki Tsugumi | 2001-07-17 |
| 6214461 | Modified hydrophobic textile product | Yuichiro OMOTE, Seiichi Ochi, Hisao Nishinaka, Shinichiro Inatomi | 2001-04-10 |
| 6173762 | Heat exchanger tube for falling film evaporator | Tomio HIGO, Tetsuo Uchida, Masahiro Furukawa, Masashi Izumi, Kazuhiro Yoshii | 2001-01-16 |
| 6147470 | Device for controlling induction motor and method of controlling the same | Hironori Ohashi, Makoto Takase, Hiroyuki Tomita | 2000-11-14 |
| 6058036 | Inverter apparatus having operation specifications determined by type of I/O block which is connected to basic control unit | Tsunehiro Endo, Kenji Nandoh, Tadao Shimotsu, Hiroyuki Benya | 2000-05-02 |
| 5631819 | Power converter | Ryoso Masaki, Takashi Ikimi, Hironori Ohashi, Yuusuke Takamoto, Sanshiro Obara | 1997-05-20 |
| 5590711 | Heat transfer tube for absorber | Takashi Kuriyama | 1997-01-07 |
| 5574352 | Frequency control method for inverter and apparatus therefor | Tsunehiro Endo, Tsuyoshi Sasaki, Hiroshi Fujii | 1996-11-12 |
| 5445682 | Method of applying surface hydrophilic treatment to heat-transfer tube | Naoyuki Hasegawa, Hisanori Shiraishi | 1995-08-29 |
| 5300872 | Method and apparatus for control of inverter | Tsunehiro Endo, Shizuo Takahashi, Masaya Taniguchi, Hiroshi Maruyama | 1994-04-05 |
| 5095878 | Air/fuel ratio control system for internal combustion engine | Shiro Kumagai, Katsuo Akishino, Reijiro Komagome, Michiyasu Yoshida, Tateo Kume +2 more | 1992-03-17 |
| 5077971 | Air/fuel ratio control system for an internal combustion engine | Shiro Kumagai, Katsuo Akishino, Reijiro Komagome, Michiyasu Yoshida, Tateo Kume +2 more | 1992-01-07 |
| 5000843 | Culture fluid concentrator | Eitaro Kumazawa, Takao Hatai, Atushi Baba, Masahiko Takahashi | 1991-03-19 |