US3133816A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic coating formulation
Assignee: GAF Chemicals Corp
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Filing: 1960-07-15
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Granted: 1964-05-19
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Expires: 1980-07-15
Abstract
No abstract record available.
Inventors
- 👤 Ben-Ezra Aaron
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 01:16
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
A PHOTOGRAPHIC ELEMENT CARRYING ON A SUITABLE BASE A SILVER HALIDE EMULSION LAYER COMPRISING GELATIN AS THE COLLOIDAL CARRIER MATERIAL, SAID LAYER CONTAINING A BALANINE DERIVATIVE SELECTED FROM THE GROUP CONSISTING OF THOSE COMPOUNDS HAVING THE FOLLOWING GENERAL FORMULAE:
Claim 2
Dependent Claim
39 words
A PHOTOGRAPHIC ELEMENT CARRYING ON A SUITABLE BASE A SILVER HALIDE EMULSION LAYER COMPRISING GELATIN AS THE COLLOIDAL CARRIER MATERIAL, SAID LAYER CONTAINING A BALANINE DERIVATIVE SELECTED FROM THE GROUP CONSISTING OF THOSE COMPOUNDS HAVING THE FOLLOWING GENERAL FORMULAE:
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) | 1967-05-19 | 1967-11-18 | 1968-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-19 | 1971-11-18 | 1972-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-19 | 1975-11-18 | 1976-05-19 | $7700.00 | Window Closed / Lapsed |