Issued Patents 1994
Showing 1–3 of 3 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 5370965 | Positive-working light-sensitive composition containing diazonium salt and novolak resin | Shunichi Kondo, Mitsumasa Tsuchiya, Sadao Ishige, Toshifumi Inno, Yoshimasa Aotani | 1994-12-06 |
| 5338642 | Diazo type recording material comprising two couplers wherein the novel coupler used is a bis-malonamide | Toshiharu Tanaka, Sadao Ishige, Hirokazu Shimada | 1994-08-16 |
| 5296329 | Diazo heat-sensitive recording material | Akira Igarashi | 1994-03-22 |