Patent US3617281A successfully refreshed from Google Patents.
US3617281A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Printing of lenticular films
Assignee: Polaroid Corp
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Filing: 1970-01-30
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Granted: 1971-11-02
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Expires: 1990-01-30
Abstract
Abstract A selected portion of a photosensitive element comprising a lenticular surface may be exposed by forming said element into an arc while said element is moving through an exposure area and exposing said photosensitive element to a source of radiation actinic thereto, said source being so placed as to be incident only upon a preselected portion of said photosensitive material.
Inventors
- 👤 Gregory E Lindin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:55
CPC Classifications
G; G03; G03F; G03F7/00; G03F7/20; G03F7/2002; G03F7/201; G03B; G03B33/00; G03B33/10; G03B33/14; G03C; G03C7/00; G03C7/04; G03C7/06; G03C7/10; G03C7/12; Y; Y10; Y10S; Y10S430/00; Y10S430/147; Y10S430/153
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A method as defined in claim 1, wherein said lenticular element is overcoated on the surface containing said colored optical filter elements with photosensitive layer.
Claim 2
Dependent Claim
57 words
A method as defined in claim 2 wherein said photoresponsive layer following exposure to said source of radiation to expose selected portions is contacted with a suitable solvent to effect the removal of the unexposed portions of said photosensitive layer and the exposed portions are contacted with a second dye to form second colored optical filter elements.
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) | 1974-11-01 | 1975-05-03 | 1975-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-11-01 | 1979-05-03 | 1979-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-11-01 | 1983-05-03 | 1983-11-02 | $7700.00 | Window Closed / Lapsed |