US3069267A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic emulsions containing hydrolyzed glycogen
Assignee: EIDP Inc
•
Filing: 1960-11-29
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Granted: 1962-12-18
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Expires: 1980-11-29
Abstract
No abstract record available.
Inventors
- 👤 Jr Vaughan Crandall Chambers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 01:11
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/04; G03C1/047
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
63 words
A PHOTOGRAPHIC ELEMENT HAVING IMPROVED COVERING POWER OF DEVELOPED SILVER COMPRISING A SUPPORT, A GELATINO-SILVER HALIDE EMULSION LAYER AND A LAYER CONTIGUOUS WITH THE SILVER HALIDE EMULSION LAYER, THE SAID CONTIGUOUS LAYER CONTAINING ON A DRY BASIS PER 100 PARTS BY WEIGHT OF GELATIN, 20 TO 80 PARTS BY WEIGHT OF A HYDROLYZED GLYCOGEN, ANY REMAINING CONSTITUENT OF THE CONTIGUOUS LAYER BEING GELATIN.
References Cited (Backward Citations)
US2129242A
Cited
US2441440A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-17 | 1966-06-18 | 1966-12-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-17 | 1970-06-18 | 1970-12-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-17 | 1974-06-18 | 1974-12-18 | $7700.00 | Window Closed / Lapsed |