US3218919A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for making color compositions
Assignee: Individual
•
Filing: 1962-10-09
•
Granted: 1965-11-23
•
Expires: 1982-10-09
Abstract
No abstract record available.
Inventors
- 👤 Sturner Otto
- 👤 Mayer Fritz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 22:02
CPC Classifications
G; G09; G09F; G09F19/00; G09F19/12; G09F19/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
AN APPARATUS FOR PRODUCING COLOR DISPLAYS BY CHROMATIC POLARIZATION, COMPRISING, IN COMBINATION: (A) LIGHTING MEANS INCORPORATING (1) A LIGHT SOURCE, AND (2) AT LEAST TWO POLARIZERS ARRANGED IN THE PATH OF LIGHT RAYS EMANATING FROM SAID LIGHT SOURCE, AT LEAST ONE OF SAID POLARIZERS BEING AT LEAST PARTLY ROTATABLE; AND (B) OPTICALLY ANISTROPIC MEANS ARRANGED IN SAID PATH BETWEEN SAID POLARIZERS, SAID ANISTROPIC MEANS INCORPORATING (1) AT LEAST ONE OPTICALLY ANISOTROPIC LAYER OF FINE STRUCTURE CONSTITUTED BY AT LEAST ONE OPTICALLY ANISOTROPIC FOIL, AND (2) AN OPTICALLY ANISOTROPIC CRYSTALLINE LAYER ARRANGED ON A TRANSPARENT CARRIER, SAID CRYSTALLINE LAYER BEING A MIXTURE COMPOSED OF (I) AN OPTICALLY ANISOTROPIC COMPOUND AND (II) AT LEAST ONE HYDROCARBON COMPOUND, SAID MIXTURE, IN DIFFERENT REGIONS, BEING MADE UP OF DIFFERENT PROPORTIONS OF SAID OPTICALLY ANISOTROPIC COMPOUND AND SAID HYDROCARBON COMPOUND.
Claim 2
Independent Claim
135 words
AN APPARATUS FOR PRODUCING COLOR DISPLAYS BY CHROMATIC POLARIZATION, COMPRISING, IN COMBINATION: (A) LIGHTING MEANS INCORPORATING (1) A LIGHT SOURCE, AND (2) AT LEAST TWO POLARIZERS ARRANGED IN THE PATH OF LIGHT RAYS EMANATING FROM SAID LIGHT SOURCE, AT LEAST ONE OF SAID POLARIZERS BEING AT LEAST PARTLY ROTATABLE; AND (B) OPTICALLY ANISTROPIC MEANS ARRANGED IN SAID PATH BETWEEN SAID POLARIZERS, SAID ANISTROPIC MEANS INCORPORATING (1) AT LEAST ONE OPTICALLY ANISOTROPIC LAYER OF FINE STRUCTURE CONSTITUTED BY AT LEAST ONE OPTICALLY ANISOTROPIC FOIL, AND (2) AN OPTICALLY ANISOTROPIC CRYSTALLINE LAYER ARRANGED ON A TRANSPARENT CARRIER, SAID CRYSTALLINE LAYER BEING A MIXTURE COMPOSED OF (I) AN OPTICALLY ANISOTROPIC COMPOUND AND (II) AT LEAST ONE HYDROCARBON COMPOUND, SAID MIXTURE, IN DIFFERENT REGIONS, BEING MADE UP OF DIFFERENT PROPORTIONS OF SAID OPTICALLY ANISOTROPIC COMPOUND AND SAID HYDROCARBON COMPOUND.
References Cited (Backward Citations)
US1885642A
Cited
US2018214A
Cited
US2070787A
Cited
US2270323A
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US2393968A
Cited
US2447805A
Cited
US2977845A
Cited
US3104273A
Cited
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 |