Patent US2463926A successfully refreshed from Google Patents.
Patent US3348217A successfully refreshed from Google Patents.
US3348217A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electro-optical computer or data processing system using superimposed polarizers
Assignee: APT FINANCAL CORP A CORPOF NV
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Filing: 1964-05-01
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Granted: 1967-10-17
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Expires: 1984-05-01
Abstract
No abstract record available.
Inventors
- 👤 Alvin A Snaper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 19:24
CPC Classifications
G; G11; G11C; G11C13/00; G11C13/04; G11C13/047
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
137 words
OPTICAL APPARATUS BY MEANS OF WHICH BINARY COMPUTATIONS ARE MADE AND DATA PROCESSED, SAID APPARATUS COMPRISING: A LAYER OF MATERIAL WHOSE OPPOSING SURFACES HAVE BEEN PROCESSED TO PASS ONLY LIGHT POLARIZED IN CERTAIN DIRECTIONS, THE UNIT AREAS ON ONE OF SAID SURFACES AND THOSE ON THE OTHER OF SAID SURFACES BEING POLARIZED IN ONE OF TWO DIRECTIONS AND UNPOLARIZED IN ACCORDANCE WITH A PREDETERMINED PATTERN, THE UNIT AREAS ON ONE SURFACE RESPECTIVELY BEING IN REGISTRATION WITH THE UNIT AREAS ON THE OTHER OF SAID SURFACES; AND MEANS FOR SELECTIVELY PROJECTING UNPOLARIZED LIGHT AND LIGHT POLARIZED IN ONE OF SAID TWO DIRECTIONS AGAINST THE UNIT AREAS OF SAID SURFACES, WHEREBY A PATTERN OF LIGHT PASSES THROUGH SAID LAYER OF MATERIAL THAT CORRESPONDS TO THE POLARIZED PATTERNS ON THE SURFACES THEREOF AND TO THE PATTERN OF THE PROJECT LIGHT.
Claim 2
Dependent Claim
137 words
OPTICAL APPARATUS BY MEANS OF WHICH BINARY COMPUTATIONS ARE MADE AND DATA PROCESSED, SAID APPARATUS COMPRISING: A LAYER OF MATERIAL WHOSE OPPOSING SURFACES HAVE BEEN PROCESSED TO PASS ONLY LIGHT POLARIZED IN CERTAIN DIRECTIONS, THE UNIT AREAS ON ONE OF SAID SURFACES AND THOSE ON THE OTHER OF SAID SURFACES BEING POLARIZED IN ONE OF TWO DIRECTIONS AND UNPOLARIZED IN ACCORDANCE WITH A PREDETERMINED PATTERN, THE UNIT AREAS ON ONE SURFACE RESPECTIVELY BEING IN REGISTRATION WITH THE UNIT AREAS ON THE OTHER OF SAID SURFACES; AND MEANS FOR SELECTIVELY PROJECTING UNPOLARIZED LIGHT AND LIGHT POLARIZED IN ONE OF SAID TWO DIRECTIONS AGAINST THE UNIT AREAS OF SAID SURFACES, WHEREBY A PATTERN OF LIGHT PASSES THROUGH SAID LAYER OF MATERIAL THAT CORRESPONDS TO THE POLARIZED PATTERNS ON THE SURFACES THEREOF AND TO THE PATTERN OF THE PROJECT LIGHT.
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) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |