Issued Patents All Time
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4675252 | Base material having a dyed membrane on the surface thereof, and method for dyeing a membrane thereon | Matsuo Hashimoto, Masayuki Kiyomoto, Yoshimitsu Karasawa, Kenji Sakamoto, Yutaka Hirasawa | 1987-06-23 |