Patent US3245790A successfully refreshed from Google Patents.
US3245790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel photographic products, processes and compositions
Assignee: Polaroid Corp
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Filing: 1961-11-13
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Granted: 1966-04-12
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Expires: 1981-11-13
Abstract
No abstract record available.
Inventors
- 👤 John F Downey
- 👤 Myron S Simon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 19:51
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/02; G03C8/08; G03C8/10; G03C8/12; G03C8/14; G03C8/16; G03C8/18; C; C09; C09B; C09B1/00; C09B1/16; C09B1/20; C09B1/22; C09B1/50; C09B1/54; C09B1/545
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
31 words
A PROCESS OF FORMING A PHOTOGRAPHIC IMAGE IN COLOR, COMPRISING DEVELOPING AN EXPOSED SILVER HALIDE EMULSION IN THE PRESENCE OF AN AQUEOUS ALKALINE SOLUTION COMPRISING A DYE DEVELOPER OF THE FORMULA:
Claim 2
Dependent Claim
31 words
A PROCESS OF FORMING A PHOTOGRAPHIC IMAGE IN COLOR, COMPRISING DEVELOPING AN EXPOSED SILVER HALIDE EMULSION IN THE PRESENCE OF AN AQUEOUS ALKALINE SOLUTION COMPRISING A DYE DEVELOPER OF 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) | 1969-04-11 | 1969-10-11 | 1970-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-04-11 | 1973-10-11 | 1974-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-04-11 | 1977-10-11 | 1978-04-12 | $7700.00 | Window Closed / Lapsed |