Issued Patents All Time
Showing 1–9 of 9 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 9637348 | Elevator apparatus | — | 2017-05-02 |
| 9546074 | Elevator apparatus including an anomalous acceleration detecting mechanism | Kenichi Okamoto, Yoshikatsu Hayashi | 2017-01-17 |
| 9505587 | Elevator with acceleration detection | Kenichi Okamoto, Yoshikatsu Hayashi | 2016-11-29 |
| 8181749 | Speed governor for an elevator | — | 2012-05-22 |
| 8069956 | Elevator speed governor and elevator device | — | 2011-12-06 |
| 7753176 | Emergency stop system of elevator | Hiroshi Kigawa, Tsunehiro Higashinaka | 2010-07-13 |
| 7228943 | Elevator apparatus with position correction for overspeed detection | Takuo Kugiya, Kenichi Okamoto, Takashi Yumura | 2007-06-12 |
| 6360847 | Elevator system and speed governing apparatus | Yoshikatsu Hayashi | 2002-03-26 |
| 6227334 | Elevator governor checking and adjusting method | Takashi Yumura | 2001-05-08 |