Patent US3563739A successfully refreshed from Google Patents.
US3563739A
Expired / Lapsed
US
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Novel products,processes and compositions comprising metal-complexed dye developers
Assignee: Polaroid Corp
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Filing: 1969-02-11
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Granted: 1971-02-16
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Expires: 1989-02-11
Abstract
Abstract PHOTOGRAPHIC PRODUCTS, PROCESSES AND COMPOSITIONS FOR FORMING DYE IMAGES EMPLOYING A METAL-COMPLEXED DYE HAVING BONDED TO THE METAL-COMPLEXING ATOM BY AT LEAST ONE COORDINATING ATOM A SUBSTANTIALLY COLORLESS LIGAND CONTAINING A SILVER HALIDE DEVELOPING FUNCTION, WHICH COMPLEXES MAY BE ILLUSTRATED SCHEMATICALLY AS FOLLOWS: DYE-ME-LIGAND-DEVELOPER
Inventors
- 👤 Elbert M Idelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:59
CPC Classifications
C; C09; C09B; C09B45/00; C09B45/02; C09B45/14; C09B45/16; C09B45/04; C09B45/06; G; G03; G03C; G03C8/00; G03C8/02; G03C8/08; G03C8/10; G03C8/12; G03C8/14; G03C8/16; G03C8/18
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |