Issued Patents All Time
Showing 1–23 of 23 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12130157 | Offset cancel systems and methods for resolver-type sensors | — | 2024-10-29 |
| 11616459 | Drive methods for a three-phase motor | Fumio Kumazawa, Masaki Yamashita | 2023-03-28 |
| 11362605 | Drive methods for a three-phase motor | Fumio Kumazawa, Masaki Yamashita | 2022-06-14 |
| 11353337 | Offset cancel systems and methods for resolver-type sensors | — | 2022-06-07 |
| 10461672 | Rotor position sensing system for three phase motors and related methods | Masanori Okubayashi | 2019-10-29 |
| 10218296 | Rotor position sensing system for three phase motors and related methods | Masanori Okubayashi | 2019-02-26 |
| 9831809 | Rotor position sensing system for three phase motors and related methods | — | 2017-11-28 |
| 9831808 | Rotor position sensing system for three phase motors and related methods | — | 2017-11-28 |
| 9356545 | Driver circuit and method | Kosaku Hioki, Takeshi Naganuma, Yoshihiro Niwa | 2016-05-31 |
| 9130496 | Drive signal generating circuit | Hiroyuki Morihara | 2015-09-08 |
| 8604744 | Motor drive circuit for rotating a rotor by supplying the currents to two coils | Takeshi Naganuma, Kosaku Hioki, Yoshihiro Niwa | 2013-12-10 |
| 8497653 | Driver circuit for driving a stepping motor | Kosaku Hioki, Takeshi Naganuma, Yoshihiro Niwa | 2013-07-30 |
| 8461796 | Motor drive circuit for driving a synchronous motor | — | 2013-06-11 |
| 8400097 | Pulse period measurement method | — | 2013-03-19 |
| 8344672 | Motor drive control circuit | — | 2013-01-01 |
| 8198844 | Motor speed controller | — | 2012-06-12 |
| 8179081 | Driver circuit | Yoshihiro Niwa, Toshiyuki Shutoku, Takeshi Naganuma, Tomofumi Watanabe | 2012-05-15 |
| 8174215 | Motor speed controller | — | 2012-05-08 |
| 7948452 | Self-emission type display device | Masatoshi Sato, Hitoshi Yasuda, Tomonori Matsumuro | 2011-05-24 |
| 7675486 | Drive system of display device | — | 2010-03-09 |
| 7656980 | Clock switching circuit | Tomonori Matsumuro, Masatoshi Sato, Hitoshi Yasuda | 2010-02-02 |
| 7479972 | Display device | — | 2009-01-20 |
| 6115335 | Reproduction apparatus for disk-like recording medium | — | 2000-09-05 |