Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 11933291 | Compressor, monitoring system, and method of monitoring compressor | Tomofumi Okubo, Kiyomi Tashima, Akihiro Takanuki | 2024-03-19 |
| 9136788 | Motor controller, air compressor, air conditioner, controller of passenger conveyor and controller of conveyor | Tomofumi Okubo, Hajime Uematsu, Hideharu Tanaka, Masakazu Hase, Yoshiyuki Taguchi | 2015-09-15 |
| 8882476 | Oil-flooded screw compressor, motor drive system, and motor control | Hirotaka Kameya, Masaru Yamasaki, Toshiyuki Ajima, Masaharu Senoo, Hideharu Tanaka | 2014-11-11 |
| 8491280 | Oil-flooded screw compressor, motor drive system, and motor control device | Hirotaka Kameya, Masaru Yamasaki, Toshiyuki Ajima, Masaharu Senoo, Hideharu Tanaka | 2013-07-23 |
| 7782641 | Frequency converting apparatus and control method for the apparatus | Kiyomi Tashima | 2010-08-24 |
| 7477530 | Frequency converting apparatus and control method for the apparatus | Kiyomi Tashima | 2009-01-13 |
| 6486548 | Semiconductor module and power converting apparatus using the module | Kinya Nakatsu, Toshio Ogawa, Akihiro Tamba, Hiroshi Fujii, Hiroyuki Tomita +2 more | 2002-11-26 |
| 5949663 | Inverter apparatus capable of readily modification of the specification and performance thereof | Tsunehiro Endo, Kinya Nakatsu, Hiroshi Fujii, Masahiro Hiraga | 1999-09-07 |
| D358753 | Frequency inverter | Yoshiki Yoshida, Akitaka Takeuchi, Hidenori Sugio | 1995-05-30 |
| D343382 | Frequency inverter | Shigehisa Hagura, Toshihiko Wada, Tadao Shimotsu | 1994-01-18 |