Electromagnetic radiation sensitive lithographic plates
Abstract
Abstract Electromagnetic radiation sensitive elements made of a layer of electromagnetic radiation sensitive material disposed on a support backing or substrate. The electromagnetic radiation sensitive material comprises essentially a substrate provided with a coating of a mixture or compound of inorganic elements which, after selective and discrete exposure to electromagnetic actinic radiation, is provided with selective and discrete surface area portions having chemical and physical characteristics substantially modified as a result of exposure to such electromagnetic radiation. The radiation sensitive elements of the invention have particular usefulness as resist materials and for making lithographic plates, photomasks, letterpress plates and diverse articles fabricated by photoresist processes and the like.
Inventors
- 👤 R Hallman
- 👤 G Kurtz
Bibliographic Details
Claims Analysis
Total Claims: 2References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-01 | 1977-04-02 | 1977-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-01 | 1981-04-02 | 1981-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-01 | 1985-04-02 | 1985-10-02 | $7700.00 | Window Closed / Lapsed |