US3510305A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Photographic unsharp masking method involving the use of a photochromic body
Assignee: Logetronics Inc
•
Filing: 1964-08-27
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Granted: 1970-05-05
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Expires: 1984-08-27
Abstract
No abstract record available.
Inventors
- 👤 Dwin R Craig
- 👤 John N Street
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 07:08
CPC Classifications
G; G03; G03C; G03C5/00; G03C5/56; G03C1/00; G03C1/72; G03C5/02; Y; Y10; Y10S; Y10S430/00; Y10S430/153
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
AN UNSHARP MASKING METHOD COMPRISING DIRECTING LIGHT HAVING A WAVELENGTH WINTH A FIRST RANGE FROM A SUBJECT UPON A PHOTOCHROMIC BODY RESPONSIVE TO SAID LIGHT TO RECEIVE AND RETAIN A FIRST IMAGE OF SAID SUBJECT SUBSTANTIALLY UNAFFECTED BY LIGHT WITHIN A SECOND RANGE OF WAVELENGTHS OUTSIDE OF SAID FIRST RANGE, AND WITH SAID SUBJECT AND FIRST IMAGE IN SUBSTANTIAL REGISTRY, DIRECTING LIGHT WITHIN SAID SECOND RANGE OF WAVELENGTHS FROM SAID SUBJECT AND FIRST IMAGE UPON A SURFACE TO FORM A COMPOSITE MASKED SECOND IMAGE.
Claim 2
Dependent Claim
84 words
AN UNSHARP MASKING METHOD COMPRISING DIRECTING LIGHT HAVING A WAVELENGTH WINTH A FIRST RANGE FROM A SUBJECT UPON A PHOTOCHROMIC BODY RESPONSIVE TO SAID LIGHT TO RECEIVE AND RETAIN A FIRST IMAGE OF SAID SUBJECT SUBSTANTIALLY UNAFFECTED BY LIGHT WITHIN A SECOND RANGE OF WAVELENGTHS OUTSIDE OF SAID FIRST RANGE, AND WITH SAID SUBJECT AND FIRST IMAGE IN SUBSTANTIAL REGISTRY, DIRECTING LIGHT WITHIN SAID SECOND RANGE OF WAVELENGTHS FROM SAID SUBJECT AND FIRST IMAGE UPON A SURFACE TO FORM A COMPOSITE MASKED SECOND IMAGE.
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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) | 1973-05-04 | 1973-11-03 | 1974-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-05-04 | 1977-11-03 | 1978-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-05-04 | 1981-11-03 | 1982-05-05 | $7700.00 | Window Closed / Lapsed |