Hirokawa; Yoichi
Patent Applications and Registrations
Patent applications and USPTO patent grants for Hirokawa; Yoichi.The latest application filed is for "access alarming method and apparatus for working vehicle".
- Hirokawa; Yoichi - Kamakura JP
- Hirokawa; Yoichi - Kamakura-shi JA
- Hirokawa; Yoichi - Kanagawa-ken JA
| Patent | Date |
|---|---|
| Access alarming method and apparatus for working vehicle Grant 4,937,795 - Motegi , et al. June 26, 1 | 1990-06-26 |
| Automatic steering apparatus for ships Grant 4,336,594 - Masuzawa , et al. June 22, 1 | 1982-06-22 |
| Servo apparatus Grant 3,886,423 - Masuzawa , et al. May 27, 1 | 1975-05-27 |
| Autopilot System Grant 3,741,474 - Kawada , et al. June 26, 1 | 1973-06-26 |
| Marine Autopilot System Including Mode Engagement Features Grant 3,696,282 - Hirokawa , et al. October 3, 1 | 1972-10-03 |
| Electric Power Source System For Gyroscopic Instrument Grant 3,679,960 - Hirokawa , et al. July 25, 1 | 1972-07-25 |
| Autopilot For Ship Grant 3,665,281 - Hirokawa May 23, 1 | 1972-05-23 |
| Steering System With Automatic Increase Of Rate Time Grant 3,656,043 - Kawada , et al. April 11, 1 | 1972-04-11 |
| Circuit For Braking And Driving An Ac Motor In The Forward And Reverse Direction Utilizing Semiconductor Elements Grant 3,568,019 - Hirokawa , et al. March 2, 1 | 1971-03-02 |
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