Issued Patents 1989
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 4859576 | Silver halide photographic material comprising a protective layer containing a polyoxyethylene surface active agent | Nobuaki Miyasaka, Shigeki Yokoyama, Shuzo Suga, Masaki Satake | 1989-08-22 |