Patent US3249432A successfully refreshed from Google Patents.
US3249432A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel photographic processes
Assignee: Polaroid Corp
•
Filing: 1960-08-22
•
Granted: 1966-05-03
•
Expires: 1980-08-22
Abstract
No abstract record available.
Inventors
- 👤 Howard C Haas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:22
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/24; G03C8/246
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
IN A PROCESS OF FORMING A PHOTOGRAPHIC IMAGE IN COLOR WHEREIN AN EXPOSED SILVER HALIDE EMULSION IS DEVELOPED IN THE PRESENCE OF A DYE DEVELOPER TO PROVIDE A PREDETERMINED DISTRIBUTION OF UNOXIDIZED DYE DEVELOPER, AND AT LEAST PART OF SAID DISTRIBUTION OF UNOXIDIZED DYE DEVELOPER IS TRANSFERRED FROM SAID EMULSION TO A SUPERPOSED IMAGE-RECEIVING LAYER TO PROVIDE A POSITIVE DYE IMAGE OF THE PHOTOGRAPHED IMAGE, THE IMPROVEMENT WHICH COMPRISES INCREASING THE STABILITY OF SAID POSITIVE DYE IMAGE BY TREATING SAID POSITIVE DYE IMAGE, SUBSEQUENT TO ITS FORMATION, WITH A HALIDE SALT OF AN ALKALI METAL.
Claim 2
Dependent Claim
95 words
IN A PROCESS OF FORMING A PHOTOGRAPHIC IMAGE IN COLOR WHEREIN AN EXPOSED SILVER HALIDE EMULSION IS DEVELOPED IN THE PRESENCE OF A DYE DEVELOPER TO PROVIDE A PREDETERMINED DISTRIBUTION OF UNOXIDIZED DYE DEVELOPER, AND AT LEAST PART OF SAID DISTRIBUTION OF UNOXIDIZED DYE DEVELOPER IS TRANSFERRED FROM SAID EMULSION TO A SUPERPOSED IMAGE-RECEIVING LAYER TO PROVIDE A POSITIVE DYE IMAGE OF THE PHOTOGRAPHED IMAGE, THE IMPROVEMENT WHICH COMPRISES INCREASING THE STABILITY OF SAID POSITIVE DYE IMAGE BY TREATING SAID POSITIVE DYE IMAGE, SUBSEQUENT TO ITS FORMATION, WITH A HALIDE SALT OF AN ALKALI METAL.
References Cited (Backward Citations)
US2747996A
Cited
US2931296A
Cited
US2892383A
Cited
US2997390A
Cited
US2913338A
Cited
DE1083651B
Cited
US3065074A
Cited
US3081167A
Cited
US3061453A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |