US3219448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic medium and methods of preparing same
Assignee: Technical Operations Inc
•
Filing: 1962-10-23
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Granted: 1965-11-23
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Expires: 1982-10-23
Abstract
No abstract record available.
Inventors
- 👤 Valle James E Lu
- 👤 Gershon M Goldberg
- 👤 John G Pack
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:22
CPC Classifications
G; G03; G03C; G03C1/00; G03C1/494; G03C1/496; G03C1/4965; G03C11/00; G03C11/12; Y; Y10; Y10S; Y10S430/00; Y10S430/133; Y10S430/136; Y10S430/162
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
61 words
A SILVER HALIDE PHOTOGRAPHIC ELEMENT COMPRISING A SUBSTRATE SHEET, A STRATUM OF SUBSTANTIALLY BINDER-FREE, VAPOR DEPOSITED SILVER HALIDE MIRCROCRYSTALS SUPORTED UPON AND SUBSTANTIALLY COVERING IN SUBSTANTIALLY CONTINUOUS PHASE A SURFACE AREA OF SAID SHEET, SAID STRATUM HAVING A THICKNESS OF FROM ABOUT 0.1 TO ABOUT 0.5 MICRON AND A DENSITY OF LESS THAN THAT OF SAID HALIDE IN SOLID CRYSTALLINE FORM.
Claim 2
Dependent Claim
61 words
A SILVER HALIDE PHOTOGRAPHIC ELEMENT COMPRISING A SUBSTRATE SHEET, A STRATUM OF SUBSTANTIALLY BINDER-FREE, VAPOR DEPOSITED SILVER HALIDE MIRCROCRYSTALS SUPORTED UPON AND SUBSTANTIALLY COVERING IN SUBSTANTIALLY CONTINUOUS PHASE A SURFACE AREA OF SAID SHEET, SAID STRATUM HAVING A THICKNESS OF FROM ABOUT 0.1 TO ABOUT 0.5 MICRON AND A DENSITY OF LESS THAN THAT OF SAID HALIDE IN SOLID CRYSTALLINE FORM.
Claim 3
Independent Claim
62 words
A METHOD OF PHOTOGRAPHY COMPRISING EXPOSING TO AN OPTICAL IMAGE A LAYER OF SUBSTANTIALLY BINDER FREE SILVER HALIDE MICROCRYSTALS SUPPORTED ON A SUBSTRATE, SAID LAYER BEING FROM ABOUT 0.1 TO ABOUT 0.5 MICRON THICK, DEVELOPING SAID LAYER UNTIL SUBSTANTIALLY ALL OF THE LIGHT STRUCK AREAS ARE DEVELOPED THROUGH THE THICKNESS OF THE LAYER DOWN TO THE SUBSTRATE, AND FIXING THE DEVELOPED IMAGE.
Claim 4
Independent Claim
62 words
A METHOD OF PHOTOGRAPHY COMPRISING EXPOSING TO AN OPTICAL IMAGE A LAYER OF SUBSTANTIALLY BINDER FREE SILVER HALIDE MICROCRYSTALS SUPPORTED ON A SUBSTRATE, SAID LAYER BEING FROM ABOUT 0.1 TO ABOUT 0.5 MICRON THICK, DEVELOPING SAID LAYER UNTIL SUBSTANTIALLY ALL OF THE LIGHT STRUCK AREAS ARE DEVELOPED THROUGH THE THICKNESS OF THE LAYER DOWN TO THE SUBSTRATE, AND FIXING THE DEVELOPED IMAGE.
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) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |