US3129100A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Developing accelerators for silver halide emulsion layers
Assignee: Agfa Gevaert NV
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Filing: 1962-03-13
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Granted: 1964-04-14
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Expires: 1982-03-13
Abstract
No abstract record available.
Inventors
- 👤 Grabhofer Herbert
- 👤 Schuler Horst
- 👤 Ulrich Hans
- 👤 Randolph August
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 19:59
CPC Classifications
C; C07; C07C; C07C309/00; C07C309/63; C07C309/72; C07C309/73; C07C309/64; C07C309/65; C07C309/66; G; G03; G03B; G03B21/00; G03B21/10; G03B21/11; G03B21/118; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/043; Y; Y10; Y10S; Y10S430/00; Y10S430/135; Y10S430/167
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
35 words
IN A PROCESS FOR DEVELOPING AN EXPOSED PHOTOGRAPHIC MATERIAL CONTAINING AT LEAST ONE SILVER HALIDE EMULSION LAYER, THE IMPROVEMENT WHICH CONSISTS IN DEVELOPING THE EXPOSED PHOTOGRAPHIC MATERIAL IN CONTACT WITH A COMPOUND HAVING THE FORMULA
Claim 2
Dependent Claim
35 words
IN A PROCESS FOR DEVELOPING AN EXPOSED PHOTOGRAPHIC MATERIAL CONTAINING AT LEAST ONE SILVER HALIDE EMULSION LAYER, THE IMPROVEMENT WHICH CONSISTS IN DEVELOPING THE EXPOSED PHOTOGRAPHIC MATERIAL IN CONTACT WITH A COMPOUND HAVING THE 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) | 1967-04-14 | 1967-10-14 | 1968-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-14 | 1971-10-14 | 1972-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-14 | 1975-10-14 | 1976-04-14 | $7700.00 | Window Closed / Lapsed |