US3350982A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Light polarizing structures
Assignee: Individual
•
Filing: 1965-07-21
•
Granted: 1967-11-07
•
Expires: 1985-07-21
Abstract
No abstract record available.
Inventors
- 👤 Alvin M Marks
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:38
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/17; G02F1/172; G02B; G02B5/00; G02B5/30; G02B5/3025; G02B5/3033; G02B5/3058
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
69 words
A LIGHT POLARIZING STRUCTURE COMPRISING SPACED SHEETS OF TRANSPARENT MATERIALS, A FLUID SUSPENSION CONTAINING A PLURALITY OF ELONGATED LIGHT POLARIZING PARTICLES DISPOSED THEREIN, AND A LINEAR LIGHT POLARIZER ON AT LEAST ONE SIDE THEREOF AND MEANS TO APPLY AN ELECTRICAL FIELD ACROSS THE SUSPENSION WHEREBY SAID PARTICLES ARE BROUGHT INTO PARALLE ALIGNMENT WITH RESPECT TO EACH OTHER AND DISPOSED IN A DIRECTION NORMAL TO THE PLANE OF THE SHEETS.
References Cited (Backward Citations)
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Cited
US2017705A
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US2909972A
Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-06 | 1971-05-08 | 1971-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-06 | 1975-05-08 | 1975-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-06 | 1979-05-08 | 1979-11-07 | $7700.00 | Window Closed / Lapsed |