US3203804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic emulsions
Assignee: EIDP Inc
•
Filing: 1962-02-27
•
Granted: 1965-08-31
•
Expires: 1982-02-27
Abstract
No abstract record available.
Inventors
- 👤 Cohen Ahraham Bernard
- 👤 Shacklett Comer Drake
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:53
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
A GELATINO-SILVER HALIDE EMULSION COMPRISING, IN ADDITION TO THE SILVER HALIDE GRAINS, (1) AN AQUEOUS PHASE CONTAINING AS A PART THEREOF (A) 20 TO 85 PARTS BY WEIGHT OF GELATIN AND (B) 2.5 TO 40 PARTS BY WEIGHT OF A WATER-SOLUBLE GLYCAN SELECTED FROM THE GROUP CONSISTING OF GLYCANS OF THE EMPIRCAL FORMULAE
Claim 2
Dependent Claim
53 words
A GELATINO-SILVER HALIDE EMULSION COMPRISING, IN ADDITION TO THE SILVER HALIDE GRAINS, (1) AN AQUEOUS PHASE CONTAINING AS A PART THEREOF (A) 20 TO 85 PARTS BY WEIGHT OF GELATIN AND (B) 2.5 TO 40 PARTS BY WEIGHT OF A WATER-SOLUBLE GLYCAN SELECTED FROM THE GROUP CONSISTING OF GLYCANS OF THE EMPIRCAL FORMULAE
References Cited (Backward Citations)
US3000740A
Cited
US3063838A
Cited
US3069267A
Cited
US3085009A
Cited
US3085010A
Cited
US3087818A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |