Issued Patents 1989
Showing 1–2 of 2 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4832467 | Electrochromic variable color tone nonglaring mirror | Masazumi Ishikawa | 1989-05-23 |
| 4801195 | Variable light transmittance glass board functional as electrochromic cell | Mikio Kawai, Mikio Ura | 1989-01-31 |