Issued Patents All Time
Showing 1–4 of 4 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5165505 | Elevator landing door apparatus | Yoshikatsu Hayashi, Masami Yoshikawa, Yoshinari Kuzuya | 1992-11-24 |
| 5156237 | Elevator landing door apparatus | Yoshikatsu Hayashi, Masami Yoshikawa, Masaaki Murakami, Tetsuro Ogushi, Yutaka Noda | 1992-10-20 |
| 4775043 | Step for a curved escalator | — | 1988-10-04 |
| 4746000 | Curved escalator | Hiroshi Nakatani, Hiroshi Yoshikawa | 1988-05-24 |