Issued Patents All Time
Showing 1–25 of 33 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 12155267 | Magnetic field generating device and rotating electrical machine | — | 2024-11-26 |
| 11239715 | Electromagnetic device | — | 2022-02-01 |
| 8264311 | Magnet unit, elevator guiding apparatus and weighing apparatus | Hiroaki Ito, Yosuke Tonami | 2012-09-11 |
| 7929268 | Magnetic levitation apparatus | — | 2011-04-19 |
| 7924128 | Magnet unit, elevator guiding apparatus and weighing apparatus | Hiroaki Ito, Yosuke Tonami | 2011-04-12 |
| 7793760 | Elevator | Hiroaki Ito | 2010-09-14 |
| 7671552 | Control device | Yosuke Tonami | 2010-03-02 |
| 7357041 | Rotation detection device | — | 2008-04-15 |
| 7164251 | Oscillation adjuster and oscillation adjusting method | — | 2007-01-16 |
| 7054783 | Rotational speed detector with ripple compensation | — | 2006-05-30 |
| 6408987 | Elevator guidance device | — | 2002-06-25 |
| 6401872 | Active guide system for elevator cage | — | 2002-06-11 |
| 6338396 | Active magnetic guide system for elevator cage | — | 2002-01-15 |
| 5905351 | Actuator controller using periodic signal | Takashi Shigemasa, Masakuni Akashi | 1999-05-18 |
| 5647477 | Magnetic non-contact transport system | — | 1997-07-15 |
| 5631617 | System for levitating and guiding object by electromagnetic attractive force | — | 1997-05-20 |
| 5477788 | Magnetic levitating apparatus | — | 1995-12-26 |
| 5251741 | Carrying apparatus having carrier levitated by magnetic force | Masakuni Akashi, Noriko Kasahara | 1993-10-12 |
| 5156093 | Transportation system of floated-carrier type | Teruo Azukizawa, Toyohiko Yokoyama, Shigeo Takaki, Yoshio Yuyama, Akitaka Noda | 1992-10-20 |
| 5067415 | Transporting system of floated carrier type with zero power control at varying load weights | Teruo Azukizawa | 1991-11-26 |
| 4972779 | Transporting system of floated carrier type | Teruo Azukizawa | 1990-11-27 |
| 4967670 | Attraction type magnetic levitating apparatus | Teruo Azukizawa | 1990-11-06 |
| 4934279 | Transportation system of a floated-carrier type | Teruo Azukizawa, Toyohiko Yokoyama, Shigeo Takaki, Yoshio Yuyama, Akitaka Noda | 1990-06-19 |
| 4924778 | Attraction type magnetic levitating apparatus | Teruo Azukizawa | 1990-05-15 |
| 4882999 | Transportation system of a floated-carrier type | Teruo Azukizawa, Toyohiko Yokoyama, Shigeo Takaki, Yoshio Yuyama, Akitaka Noda | 1989-11-28 |