Patent US3090280A successfully refreshed from Google Patents.
US3090280A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for producing a visual phenomenon for increasing contrast ratio
Assignee: Individual
•
Filing: 1959-09-02
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Granted: 1963-05-21
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Expires: 1979-09-02
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles H Winter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:13
CPC Classifications
G; G09; G09F; G09F15/00; G09F15/0006
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
155 words
A DISPLAY ADAPTED TO ATTRACT VISUAL OBSERVATION COMPRISING A SURFACE HAVING AN IMAGE OF A SUBJECT FORMED THEREON, SAID SURFACE AND IMAGE BEING OVERALL ILLUMINATED BY A FIRST LIGHT SOURCE, AND A REPLICA OF AT LEAST A PORTION OF THE SAME IMAGE PROJECTED BY A SECOND LIGHT SOURCE ONTO THE SURFACE IS SUBSTANTIALLY EXACT REGISTRY WITH THE SAID PORTION OF THE IMAGE DURING THE ENTIRE PERIOD OF TIME THAT THE DISPLAY IS TO BE VISUALLY OBSERVED AND WHILE SAID IMAGE IS ILLUMINATED BY THE FIRST LIGHT SOURCE, SAID REPLICA BEING OBTAINED BY PHOTOGRAPHING THE CORRESPONDING PORTION OF ONE OF SAID SUBJECT AND IMAGE FROM A SELECTED POSITION TO OBTAIN A NEGATIVE AND PROJECTING SAID REPLICA FROM RELATIVELY SAID SELECTED POSITION ONTO THE IMAGE THROUGH A POSITIVE TRANSPARENCY MADE FROM SAID NEGATIVE, WHEREBY TO MARKEDLY IMPROVE THE VIVIDNESS OF COLORS, GREATLY INCREASE THE CONTRAST RATIO OF SAID PORTION OF THE IMAGE AND GREATLY REDUCED SURFACE GLARE.
Claim 2
Dependent Claim
155 words
A DISPLAY ADAPTED TO ATTRACT VISUAL OBSERVATION COMPRISING A SURFACE HAVING AN IMAGE OF A SUBJECT FORMED THEREON, SAID SURFACE AND IMAGE BEING OVERALL ILLUMINATED BY A FIRST LIGHT SOURCE, AND A REPLICA OF AT LEAST A PORTION OF THE SAME IMAGE PROJECTED BY A SECOND LIGHT SOURCE ONTO THE SURFACE IS SUBSTANTIALLY EXACT REGISTRY WITH THE SAID PORTION OF THE IMAGE DURING THE ENTIRE PERIOD OF TIME THAT THE DISPLAY IS TO BE VISUALLY OBSERVED AND WHILE SAID IMAGE IS ILLUMINATED BY THE FIRST LIGHT SOURCE, SAID REPLICA BEING OBTAINED BY PHOTOGRAPHING THE CORRESPONDING PORTION OF ONE OF SAID SUBJECT AND IMAGE FROM A SELECTED POSITION TO OBTAIN A NEGATIVE AND PROJECTING SAID REPLICA FROM RELATIVELY SAID SELECTED POSITION ONTO THE IMAGE THROUGH A POSITIVE TRANSPARENCY MADE FROM SAID NEGATIVE, WHEREBY TO MARKEDLY IMPROVE THE VIVIDNESS OF COLORS, GREATLY INCREASE THE CONTRAST RATIO OF SAID PORTION OF THE IMAGE AND GREATLY REDUCED SURFACE GLARE.
References Cited (Backward Citations)
US1102903A
Cited
GB160512A
Cited
US1456954A
Cited
US1596458A
Cited
US1869275A
Cited
US2207919A
Cited
US2374981A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-05-20 | 1966-11-19 | 1967-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-05-20 | 1970-11-19 | 1971-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-05-20 | 1974-11-19 | 1975-05-21 | $7700.00 | Window Closed / Lapsed |