Patent US3402001A successfully refreshed from Google Patents.
US3402001A
Expired / Lapsed
US
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Selective gating of radiation
Assignee: International Business Machines Corp
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Filing: 1963-06-06
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Granted: 1968-09-17
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Expires: 1983-06-06
Abstract
No abstract record available.
Inventors
- 👤 Fleisher Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 06:53
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/29; G02F3/00; H; H03; H03K; H03K17/00; H03K17/51; H03K17/78; G02F1/01; G02F1/03; G02F2203/00; G02F2203/28
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
103 words
AN ELECTROMAGNETIC RADIATION GATE COMPRISING: A SUBSTANCE WHICH CHANGES THE STATE OF POLARIZAITON OF ELECTROMAGNETIC RADIATION PASSING THROUGH IT ONLY WHEN SAID SUBSTANCE IS ACTIVIATED IN THE PRESENCE OF AN ELECTRIC FIELD, A SOURCE OF PARALLEL, HIGH FREQUENCY ELECTROMAGNETIC RADIATION, AND MEANS TO SELECTIVELY IMPRESS AN ELECTRIC FIELD ACROSS SAID SUBSTANCE SUFFICIENT TO ACTIVATE SAID SUBSTANCE AT LOCATIONS WHICH DEFINE A FRESNEL PATTERN WHICH WILL DIFFRACT SAID RADIATION SUBSTANTIALLY TO A POINT, SAID MEANS TO IMPRESS AN ELECTRIC FIELD BEING TRANSPARENT TO SAID RADIATION, SAID RADIATION SOURCE BEING DIRECTED SUBSTANTIALLY PERPENDICULAR TO SAID PATTERN, WHEREBY SAID RADIATION IS FOCUSED SUBSTANTIALLY TO SAID POINT.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-09-17 | 1972-03-18 | 1972-09-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-09-17 | 1976-03-18 | 1976-09-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-09-17 | 1980-03-18 | 1980-09-17 | $7700.00 | Window Closed / Lapsed |