Issued Patents All Time
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4553988 | High-temperature furnace having selectively permeable membranes for oxygen enrichment | Shoji Shimizu, Yukihiro Saito, Yoshimasa Ito | 1985-11-19 |
| 4340624 | Electrochromic display device | Akio Yamashita | 1982-07-20 |