Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 7287624 | Double deck elevator | Hiroaki Itoh, Hideya Kohara, Masahir Hayakawa | 2007-10-30 |
| 7077240 | Covers between an upper cage and a lower cage of a double deck elevator | Hiroaki Itoh, Hideya Kohara, Masahiro Hayakawa | 2006-07-18 |
| 6615952 | Double deck elevator | Hiroaki Itoh, Hideya Kohara, Masahiro Hayakawa | 2003-09-09 |