US3029145A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of polymer resist images
Assignee: GAF Chemicals Corp
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Filing: 1960-06-09
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Granted: 1962-04-10
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Expires: 1980-06-09
Abstract
No abstract record available.
Inventors
- 👤 Dewey M Dumers
- 👤 Carl E Diener
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:53
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; G03F7/028; G03F7/0285; C; C08; C08F; C08F2/00; C08F2/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
A PROCESS OF PRODUCING A POLYMERIC PHOTOGRAPHIC IMAGE WHICH COMPRISES EXPOSING TO A PATTERN OF ACTINIC RADIATIONS A SILVER HALIDE PHOTOGRAPHIC EMULSION, DEVELOPING THE SO EXPOSED EMULSION WITH A FERROUS SALT DEVELOPING AGENT TO PRODUCE IN THE EXPOSED AREAS A SILVER IMAGE AND A FERRIC ION IMAGE AND IN THE UNEXPOSED AREAS AN IMAGE OF RESIDUAL FERROUS IONS, CONTACTING THE FERROUS ION IMAGE IN THE PRESENCE OF A PER COMPOUND HAVING THE GROUPING -O-O WITH A NORMALLY LIQUID TO SOLID ETHYLENICALLY UNSATURED MONOMER COMPOUND WHEREBY POLYMERIZATION OF THE ETHYLENICALLY UNSATURED MONOMER COMPOUND CORRESPONDING TO THE UNEXPOSED AREAS IS EFFECTED IN PROPORTION TO THE AMOUNT OF RESIDUAL FERROUS IONS, AND REMOVING THE UNPOLYMERIZED MONOMER COMPOUND CORRESPONDING TO EXPOSED AREAS.
Claim 2
Dependent Claim
118 words
A PROCESS OF PRODUCING A POLYMERIC PHOTOGRAPHIC IMAGE WHICH COMPRISES EXPOSING TO A PATTERN OF ACTINIC RADIATIONS A SILVER HALIDE PHOTOGRAPHIC EMULSION, DEVELOPING THE SO EXPOSED EMULSION WITH A FERROUS SALT DEVELOPING AGENT TO PRODUCE IN THE EXPOSED AREAS A SILVER IMAGE AND A FERRIC ION IMAGE AND IN THE UNEXPOSED AREAS AN IMAGE OF RESIDUAL FERROUS IONS, CONTACTING THE FERROUS ION IMAGE IN THE PRESENCE OF A PER COMPOUND HAVING THE GROUPING -O-O WITH A NORMALLY LIQUID TO SOLID ETHYLENICALLY UNSATURED MONOMER COMPOUND WHEREBY POLYMERIZATION OF THE ETHYLENICALLY UNSATURED MONOMER COMPOUND CORRESPONDING TO THE UNEXPOSED AREAS IS EFFECTED IN PROPORTION TO THE AMOUNT OF RESIDUAL FERROUS IONS, AND REMOVING THE UNPOLYMERIZED MONOMER COMPOUND CORRESPONDING TO EXPOSED AREAS.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-04-09 | 1965-10-09 | 1966-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-09 | 1969-10-09 | 1970-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-09 | 1973-10-09 | 1974-04-10 | $7700.00 | Window Closed / Lapsed |