US2504615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic emulsions containing nu-aryloxy-, arylthio-, and arylselenoalkyl cyanine dyes
Assignee: GAF Chemicals Corp
•
Filing: 1945-12-29
•
Granted: 1950-04-18
•
Expires: 1965-12-29
Abstract
No abstract record available.
Inventors
- 👤 Alfred W Anish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:39
CPC Classifications
C; C09; C09B; C09B23/00; C09B23/0075; C09B23/0091; C09B23/02; C09B23/10; G; G03; G03C; G03C1/00; G03C1/005; G03C1/06; G03C1/08; G03C1/10; G03C1/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
19 words
A PHOTOGRAPHIC GELATINO SILVER-HALIDE EMULSION CONTAINING A DYE SELECTED FROM THE GROUP CONSISTING OF DYES OF THE GENERAL FORMULAE:
Claim 2
Dependent Claim
19 words
A PHOTOGRAPHIC GELATINO SILVER-HALIDE EMULSION CONTAINING A DYE SELECTED FROM THE GROUP CONSISTING OF DYES OF THE GENERAL FORMULAE:
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-04-17 | 1953-10-17 | 1954-04-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-04-17 | 1957-10-17 | 1958-04-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-04-17 | 1961-10-17 | 1962-04-18 | $7700.00 | Window Closed / Lapsed |