Issued Patents All Time
Showing 26–37 of 37 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6972918 | Magnetic disk memory system | Minoru Kurosawa | 2005-12-06 |
| 6903894 | Magnetic disc storage apparatus | Kenji Nishimura, Tatsuya Negishi | 2005-06-07 |
| 6900604 | Drive control system for sensor-less motor | Kunihiro Kawauchi, Toshiyuki Tsunoda, Reiichi Kimura | 2005-05-31 |
| 6801382 | Magnetic disk storage apparatus | Reiichi Kimura, Kunihiro Kawauchi, Minoru Kurosawa, Kichiya Itagaki | 2004-10-05 |
| 6771033 | Drive control system for sensor-less motor | Kunihiro Kawauchi, Toshiyuki Tsunoda, Reiichi Kimura | 2004-08-03 |
| 6757129 | Magnetic disk storage apparatus | Hiroshi Kuroiwa | 2004-06-29 |
| 6563286 | Semiconductor integrated circuit for brushless motor drive control and brushless motor drive control apparatus | Kunio Seki, Toshiyuki Tsunoda, Kunihiro Kawauchi | 2003-05-13 |
| 6344721 | Semiconductor integrated circuit for brushless motor drive control and brushless motor drive control apparatus | Kunio Seki, Toshiyuki Tsunoda, Kunihiro Kawauchi | 2002-02-05 |
| 6340873 | Semiconductor integrated circuit for brushless motor drive control and brushless motor drive control apparatus | Kunio Seki, Toshiyuki Tsunoda, Kunihiro Kawauchi | 2002-01-22 |
| 5847521 | Method and apparatus for driving an electric motor | Masatoshi Morikawa, Kunio Seki | 1998-12-08 |
| 5818179 | Brushless motor drive circuit including a linear amplifier for sending an output signal based upon the detected back electromotive force voltage | Satoshi Kondo | 1998-10-06 |
| 5569988 | Brushless motor drive circuit including a linear amplifier for sending and output signal based upon the detected back electromotive force voltage | Satoshi Kondo | 1996-10-29 |