Issued Patents All Time
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 6305499 | Drum drive elevator using flat belt | David Wayne Jones, Yuji Kanzaki, Tadaaki Nabetani, Toshimitsu Mori, Shusaku Shibasaki +1 more | 2001-10-23 |
| 6085874 | Rail-climbing elevator counterweight having flat machines | Yasunobu Uchino, Kenji Nakagawa, Hirofumi Yuda, Masaharu Ueda, Takayuki Nagashima | 2000-07-11 |