US2887381A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sensitized photographic substances
Assignee: Individual
•
Filing: 1957-07-29
•
Granted: 1959-05-19
•
Expires: 1977-07-29
Abstract
No abstract record available.
Inventors
- 👤 Levy Marilyn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:48
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/494
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A PHOATOGRAPHIC ELEMENT COMPRISING AN ORGANIC COLLOID CARRIER HAVING DISPERSED THEREIN A LIGHT SENSITIVE SILVER SALT SELECTED FROM THE GROUP CONSISTING OF SILVER P-TOLUENE SULFINATE AND SILVER BENZENE SULFINATE AND A SURFACE ACTIVE AGENT SELECTED FROM THE GROUP OF SODIUM LAURYL SULPHATE, SODIUM 2-ETHYLHEXENE SULFONATE, SODIUM TETRADECYL SULFATE, SODIUM DIOCTYL PHOSPHATE,SODIUM HEPTADECYL SULFATE, POLYETHYLENE GLYCOL ALKYL ETHERS, OOCTA-DECYL-TRIMETHYLAMMONIUM-CHLORIDE OR DODECYL-TRIMETHYL-AMMONIUMCHLORIDE, SAID SURFACE-ACTIVE AGENTS ARE BEING PRESENT IN AMOUNATS OF BETWEEN 0.2 AND 2 PERCENT OF THE WEIGHT OF THE FINISHED PHOTOGRAPHIC ELEMENT.
Claim 2
Dependent Claim
82 words
A PHOATOGRAPHIC ELEMENT COMPRISING AN ORGANIC COLLOID CARRIER HAVING DISPERSED THEREIN A LIGHT SENSITIVE SILVER SALT SELECTED FROM THE GROUP CONSISTING OF SILVER P-TOLUENE SULFINATE AND SILVER BENZENE SULFINATE AND A SURFACE ACTIVE AGENT SELECTED FROM THE GROUP OF SODIUM LAURYL SULPHATE, SODIUM 2-ETHYLHEXENE SULFONATE, SODIUM TETRADECYL SULFATE, SODIUM DIOCTYL PHOSPHATE,SODIUM HEPTADECYL SULFATE, POLYETHYLENE GLYCOL ALKYL ETHERS, OOCTA-DECYL-TRIMETHYLAMMONIUM-CHLORIDE OR DODECYL-TRIMETHYL-AMMONIUMCHLORIDE, SAID SURFACE-ACTIVE AGENTS ARE BEING PRESENT IN AMOUNATS OF BETWEEN 0.2 AND 2 PERCENT OF THE WEIGHT OF THE FINISHED PHOTOGRAPHIC ELEMENT.
References Cited (Backward Citations)
US2756146A
Cited
US2835577A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-05-18 | 1962-11-17 | 1963-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-18 | 1966-11-17 | 1967-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-18 | 1970-11-17 | 1971-05-19 | $7700.00 | Window Closed / Lapsed |