Patent US3218164A successfully refreshed from Google Patents.
US3218164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel photographic processes, compositions and products
Assignee: Polaroid Corp
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Filing: 1959-01-26
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Granted: 1965-11-16
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Expires: 1979-01-26
Abstract
No abstract record available.
Inventors
- 👤 Green Milton
- 👤 Leon E Rubin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:59
CPC Classifications
C; C09; C09B; C09B45/00; C09B45/02; G; G03; G03C; G03C8/00; G03C8/02; G03C8/08; G03C8/10; G03C8/12; G03C8/14; G03C8/16; G03C8/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
IN A PROCESS OF FORMING A PHOTOGRAPHIC IMAGE, THE STEPS WHICH COMPRISE DEVELOPING A LATENT IMAGE CONTAINED IN AN EXPOSED SILVER HALIDE EMULSION WITH A PROCESSING SOLUTION COMPRISING AN AQUEOUS ALKALINE SOLUTION OF AN ALKALI-SOLUBLE METAL-COMPLEXED DYE DEVELOPER, SAID DYE DEVELOPER BEING A COMPOUND WHICH IS BOTH A SILVER HALIDE DEVELOPING AGENT AND A METAL-COMPLEXED DYE, IMMOBILIZING SAID METAL-COMPLEXED DYE DEVELOPER IN EXPOSED AREAS OF SAID EMULSION, PROVIDING IN SAID EMULSION A PREDETERMINED DISTRIBUTION OF MOBILE DYE DEVELOPER, AND TRANSFERRING AT LEAST PART OF SAID DISTRIBUTION OF SAID MOBILE DYE DEVELOPER, BY IMBIBITION, FROM SAID EMULSION TO AN IMAGERECEIVING ELEMENTE IN SUPERPOSED RELATIONSHIP WITH SAID EMULSION TO IMPART TO SAID IMAGE-RECEIVING ELEMENT A REVERSED IMAGE OF THE DEVELOPED IMAGE.
Claim 2
Dependent Claim
119 words
IN A PROCESS OF FORMING A PHOTOGRAPHIC IMAGE, THE STEPS WHICH COMPRISE DEVELOPING A LATENT IMAGE CONTAINED IN AN EXPOSED SILVER HALIDE EMULSION WITH A PROCESSING SOLUTION COMPRISING AN AQUEOUS ALKALINE SOLUTION OF AN ALKALI-SOLUBLE METAL-COMPLEXED DYE DEVELOPER, SAID DYE DEVELOPER BEING A COMPOUND WHICH IS BOTH A SILVER HALIDE DEVELOPING AGENT AND A METAL-COMPLEXED DYE, IMMOBILIZING SAID METAL-COMPLEXED DYE DEVELOPER IN EXPOSED AREAS OF SAID EMULSION, PROVIDING IN SAID EMULSION A PREDETERMINED DISTRIBUTION OF MOBILE DYE DEVELOPER, AND TRANSFERRING AT LEAST PART OF SAID DISTRIBUTION OF SAID MOBILE DYE DEVELOPER, BY IMBIBITION, FROM SAID EMULSION TO AN IMAGERECEIVING ELEMENTE IN SUPERPOSED RELATIONSHIP WITH SAID EMULSION TO IMPART TO SAID IMAGE-RECEIVING ELEMENT A REVERSED IMAGE OF THE DEVELOPED IMAGE.
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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) | 1968-11-15 | 1969-05-17 | 1969-11-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-15 | 1973-05-17 | 1973-11-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-15 | 1977-05-17 | 1977-11-16 | $7700.00 | Window Closed / Lapsed |