US3142567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic product and process
Assignee: Polaroid Corp
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Filing: 1962-03-09
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Granted: 1964-07-28
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Expires: 1982-03-09
Abstract
No abstract record available.
Inventors
- 👤 Meroe M Morse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:46
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/494; G03C1/496; G03C1/4965; Y; Y10; Y10S; Y10S430/00; Y10S430/133
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
150 words
A PROCESS OF FORMING A PHOTOSENSITIVE ELEMENT, SAID PROCESS COMPRISING THE STEPS OF VACUUM DEPOSITING GOLD AND SILVER ON A SUPPORT TO FORM A METALLIC COATING, SAID SILVER BEING DEPOSITED IN A CONCENTRATION WHICH, BY ITSELF, WOULD PROVIDE AN OPTICAL TRANSMISSION OF FROM ABOUT 10% TO ABOUT 30%, SAID GOLD BEING DEPOSITED IN A CONCENTRATION WHICH, BY ITSELF, WOULD BE A METALLIC COATING HAVING AN OPTICAL TRANSMISSION OF FROM ABOUT 10% TO AT MOST 40%, SAID COATING OF GOLD AND SILVER TOGETHER HAVING A TOTAL OPTICAL TRANSMISSION OF FROM ABOUT 0.01% TO ABOUT 1.0%, AND HALOGENATING SAID METALLIC COATING BY CONTACTING SAID METALLIC COATING WITH HALOGEN VAPORS PROVIDED BY A MEMBER OF THE GROUP CONSISTING OF ELEMENTAL CHLORINE, ELEMENTAL BROMINE, ELEMENTAL IODINE, AND VOLATILE SALTS OF SAID ELEMENTAL HALOGENS FOR A TIME SUFFICIENT TO PROVIDE A HALOGENATED METALLIC COATING HAVING AN OPTICAL TRANSMISSION OF FROM ABOUT 85% TO ABOUT 100%.
Claim 2
Dependent Claim
150 words
A PROCESS OF FORMING A PHOTOSENSITIVE ELEMENT, SAID PROCESS COMPRISING THE STEPS OF VACUUM DEPOSITING GOLD AND SILVER ON A SUPPORT TO FORM A METALLIC COATING, SAID SILVER BEING DEPOSITED IN A CONCENTRATION WHICH, BY ITSELF, WOULD PROVIDE AN OPTICAL TRANSMISSION OF FROM ABOUT 10% TO ABOUT 30%, SAID GOLD BEING DEPOSITED IN A CONCENTRATION WHICH, BY ITSELF, WOULD BE A METALLIC COATING HAVING AN OPTICAL TRANSMISSION OF FROM ABOUT 10% TO AT MOST 40%, SAID COATING OF GOLD AND SILVER TOGETHER HAVING A TOTAL OPTICAL TRANSMISSION OF FROM ABOUT 0.01% TO ABOUT 1.0%, AND HALOGENATING SAID METALLIC COATING BY CONTACTING SAID METALLIC COATING WITH HALOGEN VAPORS PROVIDED BY A MEMBER OF THE GROUP CONSISTING OF ELEMENTAL CHLORINE, ELEMENTAL BROMINE, ELEMENTAL IODINE, AND VOLATILE SALTS OF SAID ELEMENTAL HALOGENS FOR A TIME SUFFICIENT TO PROVIDE A HALOGENATED METALLIC COATING HAVING AN OPTICAL TRANSMISSION OF FROM ABOUT 85% TO ABOUT 100%.
Claim 3
Dependent Claim
36 words
THE PROCESS OF DEVELOPING A PHOTOEXPOSED PHOTOSENSITIVE STRATUM FORMED BY THE PROCESS OF CLAIM 1, SAID DEVELOPMENT BEING EFFECTED BY CONTACTING SAID EXPOSED PHOTOSENSITIVE STRATUM WITH THE VAPOR OF A VOLATILE ORGANIC SILVER HALIDE DEVELOPING AGENT.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-07-28 | 1968-01-27 | 1968-07-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-28 | 1972-01-27 | 1972-07-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-28 | 1976-01-27 | 1976-07-28 | $7700.00 | Window Closed / Lapsed |