US3189458A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sensitizing photographic silver halide emulsions with elemental sulfur and an organic thiol
Assignee: Eastman Kodak Co
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Filing: 1961-11-06
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Granted: 1965-06-15
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Expires: 1981-11-06
Abstract
No abstract record available.
Inventors
- 👤 Arthur H Herz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:19
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/09
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
107 words
THE PROCESS FOR SENSITIZING A PHOTOGRAPHIC SILVER HALIDE EMULSION WHICH COMPRISES INCORPORATING IN SAID EMULSION: (A) AT LEAST .0001 GRAM PER MOLE OF SILVER HALIDE IN SAID EMULSION OF AN ADDENDUM SELECTED FROM THE GROUP CONSISTING OF (1) ELEMENTAL SULFUR, AND (2) A SULFUR-CONTAINING COMPOUND THAT FORMS ELEMENTAL SULFUR IN SAID EMULSION; AND (B) AT LEAST .001 GRAM PER MOLE OF SILVER HALIDE IN SAID EMULSION OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF (1) AN ORGANIC THIOL, AND (2) A SULFUR-CONTAINING COMPOUND THAT FORMS AN ORGANIC THIOL IN SAID EMULSION SELECTED FROM THE GROUP CONSISTING OF (A) AN ORGANIC THIOETHER, AND (B) AN ORGANIC DISULFIDE.
Claim 2
Dependent Claim
107 words
THE PROCESS FOR SENSITIZING A PHOTOGRAPHIC SILVER HALIDE EMULSION WHICH COMPRISES INCORPORATING IN SAID EMULSION: (A) AT LEAST .0001 GRAM PER MOLE OF SILVER HALIDE IN SAID EMULSION OF AN ADDENDUM SELECTED FROM THE GROUP CONSISTING OF (1) ELEMENTAL SULFUR, AND (2) A SULFUR-CONTAINING COMPOUND THAT FORMS ELEMENTAL SULFUR IN SAID EMULSION; AND (B) AT LEAST .001 GRAM PER MOLE OF SILVER HALIDE IN SAID EMULSION OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF (1) AN ORGANIC THIOL, AND (2) A SULFUR-CONTAINING COMPOUND THAT FORMS AN ORGANIC THIOL IN SAID EMULSION SELECTED FROM THE GROUP CONSISTING OF (A) AN ORGANIC THIOETHER, AND (B) AN ORGANIC DISULFIDE.
References Cited (Backward Citations)
US1898512A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-14 | 1968-12-14 | 1969-06-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-14 | 1972-12-14 | 1973-06-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-14 | 1976-12-14 | 1977-06-15 | $7700.00 | Window Closed / Lapsed |