Issued Patents 1994
Showing 1–1 of 1 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5318874 | O-naphthoquinone diazide photosensitive coating composition containing a polyvinyl pyrrolidone compound and a stannic halide | Shinichi Yamamoto, Masatoshi Tomiki, Naohiko Kiryu | 1994-06-07 |