Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6305499 | Drum drive elevator using flat belt | David Wayne Jones, Tadaaki Nabetani, Toshimitsu Mori, Shusaku Shibasaki, Yasuhisa Shioda +1 more | 2001-10-23 |
| 5420491 | Method for consuming regenerated power for elevators | Koji Yamada | 1995-05-30 |