Issued Patents All Time
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4681207 | Escalator | Shigeru Goto, Matsuhiko Ishida, Shosaku Inoue | 1987-07-21 |
| 4557369 | Moving staircase | Matsuhiko Ishida, Shigeru Goto, Takeshi Sakurai | 1985-12-10 |
| 4188707 | Semiconductor devices and method of manufacturing the same | Tetsushi Sakai, Yoshio Sunohara | 1980-02-19 |