US3063838A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic emulsions and elements containing dextran
Assignee: EIDP Inc
•
Filing: 1958-11-21
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Granted: 1962-11-13
•
Expires: 1978-11-21
Abstract
No abstract record available.
Inventors
- 👤 Jenning Andrew Bradshaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 12:50
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
39 words
A PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT, A GELATINO-SILVER HALIDE EMULSION LAYER AND A LAYER CON-TIGUOUS WITH THE SILVER HALIDE EMULSION LAYER, THE SAIDD CONTIGUOUS LAYER CONTAINING 75% TO 100% DEXTRAN, ANYY REMAINING CONSTITUENT OF THE CONTIGUOUS LAYER BEING GELA-TIN.
Claim 2
Dependent Claim
39 words
A PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT, A GELATINO-SILVER HALIDE EMULSION LAYER AND A LAYER CON-TIGUOUS WITH THE SILVER HALIDE EMULSION LAYER, THE SAIDD CONTIGUOUS LAYER CONTAINING 75% TO 100% DEXTRAN, ANYY REMAINING CONSTITUENT OF THE CONTIGUOUS LAYER BEING GELA-TIN.
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) | 1965-11-12 | 1966-05-14 | 1966-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-12 | 1970-05-14 | 1970-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-12 | 1974-05-14 | 1974-11-13 | $7700.00 | Window Closed / Lapsed |