US2948615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antifoggants and stabilizers for photographic silver halide emulsions
Assignee: GAF Chemicals Corp
•
Filing: 1958-03-13
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Granted: 1960-08-09
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Expires: 1978-03-13
Abstract
No abstract record available.
Inventors
- 👤 Dersch Fritz
- 👤 Angelus Millet R De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:51
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/48; H01M4/56; B; B26; B26F; B26F1/00; B26F1/02; B42; B42B; B42B5/00; B42B5/08; B42B5/10; C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/24; C07D213/28; C07D213/32; C07D215/00; C07D215/02; C07D215/12; H01M4/14; H01M4/16; H01M4/22; H01M4/23; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18888; Y10T74/1892; Y10T74/1896; Y10T83/00; Y10T83/869; Y10T83/8821; Y10T83/8828; Y10T83/8831; Y10T83/8841; Y10T83/8845
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
A LIGHT-SENSITIVE PHOTOGRAPHIC MATERIAL COMPRISING A BASE AND A LIGHT-SENSITIVE SILVER HALIDE EMULSION LAYER, SAID LIGHT-SENSITIVE MATERIAL CONTAINING AS AN ANTIFOGGANT A COMPOUND SELECTED FROM THE CLASS CONSISTING OF THOSE OF THE FOLLOWING FORMULAE:
Claim 2
Dependent Claim
34 words
A LIGHT-SENSITIVE PHOTOGRAPHIC MATERIAL COMPRISING A BASE AND A LIGHT-SENSITIVE SILVER HALIDE EMULSION LAYER, SAID LIGHT-SENSITIVE MATERIAL CONTAINING AS AN ANTIFOGGANT A COMPOUND SELECTED FROM THE CLASS CONSISTING OF THOSE OF THE FOLLOWING FORMULAE:
References Cited (Backward Citations)
US1742042A
Cited
US2819965A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-08-09 | 1964-02-08 | 1964-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-08-09 | 1968-02-08 | 1968-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-08-09 | 1972-02-08 | 1972-08-09 | $7700.00 | Window Closed / Lapsed |