US3062653A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic emulsion containing pyrazolone magenta-forming couplers
Assignee: Eastman Kodak Co
•
Filing: 1960-02-18
•
Granted: 1962-11-06
•
Expires: 1980-02-18
Abstract
No abstract record available.
Inventors
- 👤 Weissberger Arnold
- 👤 Loria Anthony
- 👤 Ilmari F Salminen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:51
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/32; G03C7/36; G03C7/38; G03C7/384; C; C07; C07D; C07D231/00; C07D231/02; C07D231/10; C07D231/14; C07D231/44; C07D231/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
13 words
A PHOTOGRAPHIC SILVER HALIDE EMULSION CONTAINING A MAGENTA FORMING COUPLER HAVING THE FORMULA:
Claim 2
Dependent Claim
13 words
A PHOTOGRAPHIC SILVER HALIDE EMULSION CONTAINING A MAGENTA FORMING COUPLER 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) | 1965-11-05 | 1966-05-07 | 1966-11-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-11-05 | 1970-05-07 | 1970-11-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-11-05 | 1974-05-07 | 1974-11-06 | $7700.00 | Window Closed / Lapsed |