Patent US3173791A successfully refreshed from Google Patents.
US3173791A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Supersensitized photographic silver halide emulsions
Assignee: Eastman Kodak Co
•
Filing: 1962-09-27
•
Granted: 1965-03-16
•
Expires: 1982-09-27
Abstract
No abstract record available.
Inventors
- 👤 Norman W Kalenda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:07
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/28; G03C1/29; C; C09; C09B; C09B23/00; C09B23/02; C09B23/06; C09B23/10; C09B23/105
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
22 words
A PHOTOGRPAHIC SILVER HALIDE EMULSION CONTAINING A SUPERSENSITIZING COMBINATION OF A BENZIMIDAZOLECARBOCYANINE DYE WITH A DYE SELECTED FROM THOSE HAVING THE FORMULA:
Claim 2
Dependent Claim
22 words
A PHOTOGRPAHIC SILVER HALIDE EMULSION CONTAINING A SUPERSENSITIZING COMBINATION OF A BENZIMIDAZOLECARBOCYANINE DYE WITH A DYE SELECTED FROM THOSE HAVING THE FORMULA:
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) | 1968-03-15 | 1968-09-14 | 1969-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-15 | 1972-09-14 | 1973-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-15 | 1976-09-14 | 1977-03-16 | $7700.00 | Window Closed / Lapsed |