US3352673A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multilayer color photographic element
Assignee: Eastman Kodak Co
•
Filing: 1963-10-28
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Granted: 1967-11-14
•
Expires: 1983-10-28
Abstract
No abstract record available.
Inventors
- 👤 James L Graham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:56
CPC Classifications
G; G03; G03C; G03C7/00; G03C7/30; G03C7/3046; G03C1/00; G03C1/76; G03C1/815; G03C1/8155
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
A MULTILAYER PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT HAVING THEREON A PLURALITY OF DIFFERENTIALLY SENSITIVE PHOTOGRAPHIC SILVER HALIDE EMULSION LAYERS AND AN ULTRAVIOLET LIGHT-ABSORBING LAYER POSITIONED IN THE SAID ELEMENT TO PROVIDE EFFECTIVE PROTECTION FROM UNDESIRABLE ULTRAVIOLET RADIATION DURING EXPOSURE, SAID ULTRAVIOLET LIGHTABSORBING LAYER COMPRISING A WATER-PERMEBLE POLY-NVINYLLACTAM COLLOID HAVING DISPERSED THEREIN AN UNBALLASTED MATERIAL CAPABLE OF ABSORBING ULTRAVIOLET LIGHT BUT TRANSMITTING SUBSTANTIALLY ALL VISIBLE LIGHT RAYS AND WHICH IS
Claim 2
Dependent Claim
69 words
A MULTILAYER PHOTOGRAPHIC ELEMENT COMPRISING A SUPPORT HAVING THEREON A PLURALITY OF DIFFERENTIALLY SENSITIVE PHOTOGRAPHIC SILVER HALIDE EMULSION LAYERS AND AN ULTRAVIOLET LIGHT-ABSORBING LAYER POSITIONED IN THE SAID ELEMENT TO PROVIDE EFFECTIVE PROTECTION FROM UNDESIRABLE ULTRAVIOLET RADIATION DURING EXPOSURE, SAID ULTRAVIOLET LIGHTABSORBING LAYER COMPRISING A WATER-PERMEBLE POLY-NVINYLLACTAM COLLOID HAVING DISPERSED THEREIN AN UNBALLASTED MATERIAL CAPABLE OF ABSORBING ULTRAVIOLET LIGHT BUT TRANSMITTING SUBSTANTIALLY ALL VISIBLE LIGHT RAYS AND WHICH IS
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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) | 1970-11-13 | 1971-05-15 | 1971-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-13 | 1975-05-15 | 1975-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-13 | 1979-05-15 | 1979-11-14 | $7700.00 | Window Closed / Lapsed |