US3023102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Direct positive photographic emulsion
Assignee: GAF Chemicals Corp
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Filing: 1957-09-24
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Granted: 1962-02-27
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Expires: 1977-09-24
Abstract
No abstract record available.
Inventors
- 👤 Dersch Fritz
- 👤 Norman J Doorenbos
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:31
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/485; G03C1/48592; Y; Y10; Y10S; Y10S430/00; Y10S430/141
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
19 words
A DIRECT POSITIVE PHOTOGRAPHIC EMULSION COMPRISING A SILVER-HALIDE EMULSION CONTAINING A DESENSITIZING COMPOUND REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
Claim 2
Dependent Claim
19 words
A DIRECT POSITIVE PHOTOGRAPHIC EMULSION COMPRISING A SILVER-HALIDE EMULSION CONTAINING A DESENSITIZING COMPOUND REPRESENTED BY THE FOLLOWING GENERAL FORMULA:
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-02-26 | 1965-08-28 | 1966-02-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-02-26 | 1969-08-28 | 1970-02-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-02-26 | 1973-08-28 | 1974-02-27 | $7700.00 | Window Closed / Lapsed |