Patent US3306747A successfully refreshed from Google Patents.
US3306747A
Expired / Lapsed
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Diffusion transfer product with microcapsules containing glycerin-water solutions
Assignee: Polaroid Corp
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Filing: 1962-12-26
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Granted: 1967-02-28
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Expires: 1982-12-26
Abstract
No abstract record available.
Inventors
- 👤 Howard C Haas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:47
CPC Classifications
G; G03; G03C; G03C8/00; G03C8/42; G03C8/426; B; B01; B01J; B01J13/00; B01J13/02; B01J13/025; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2982; Y10T428/2984; Y10T428/2985; Y10T428/2987
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
62 words
A PHOTOGRAPHIC PRODUCT COMPRISING A PLURALITY OF LAYERS INCLUDING A SUPPORT, A LAYER ON SAID SUPPORT COMPRISING MICROSCOPIC PRESSURE-RUPTURABLE CAPSULES CONTAINING A PHOTOGRAPHIC PROCESSING COMPOSITION INCLUDING A GLYCERIN-WATER SOLUTION CONTAINING A SILVER HALIDE PROCESSING REAGENT SELECTED FROM THE GROUP CONSISTING OF A SILVER HALIDE PHOTOGRAPHIC DEVELOPING AGENT AND A SILVER HALIDE SOLVENT, A LAYER ON SAID SUPPORT COMPRISING A SILVER HALIDE EMULSION.
Claim 2
Dependent Claim
62 words
A PHOTOGRAPHIC PRODUCT COMPRISING A PLURALITY OF LAYERS INCLUDING A SUPPORT, A LAYER ON SAID SUPPORT COMPRISING MICROSCOPIC PRESSURE-RUPTURABLE CAPSULES CONTAINING A PHOTOGRAPHIC PROCESSING COMPOSITION INCLUDING A GLYCERIN-WATER SOLUTION CONTAINING A SILVER HALIDE PROCESSING REAGENT SELECTED FROM THE GROUP CONSISTING OF A SILVER HALIDE PHOTOGRAPHIC DEVELOPING AGENT AND A SILVER HALIDE SOLVENT, A LAYER ON SAID SUPPORT COMPRISING A SILVER HALIDE EMULSION.
References Cited (Backward Citations)
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Cited
US3019124A
Cited
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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) | 1970-02-27 | 1970-08-29 | 1971-02-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-27 | 1974-08-29 | 1975-02-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-27 | 1978-08-29 | 1979-02-28 | $7700.00 | Window Closed / Lapsed |