Patent US3239671A successfully refreshed from Google Patents.
US3239671A
Expired / Lapsed
US
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Single-sideband light modulator
Assignee: Verizon Laboratories Inc
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Filing: 1962-05-21
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Granted: 1966-03-08
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Expires: 1982-05-21
Abstract
No abstract record available.
Inventors
- 👤 Carl F Buhrer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:28
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/68; G; G02; G02F; G02F1/00; G02F1/01; G02F1/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
APPARATUS FOR MODULATING AN INCIDENT POLARIZED BEAM OF ELECTROMAGNETI RADIATION COMPRISING (A) FIELD RESPONSIVE MEANS FOR ELLIPTICALLY POLARIZING SAID INCIDENT BEAM, THE RESULTING ELLIPTICALLY POLARIZED BEAM HAVING A MAJOR ELLIPTIC AXIS AND (B) MODULATING SIGNAL MEANS FOR ROTATING SAID MAJOR ELLIPTIC AXIS OF POLARIZATION ABOUT THE AXIS OF SAID BEAM AT A FREQUENCY EQUAL TO ONE-HALF THE FREQUENCY OF SAID MODULATING SIGNAL, THE RESULTING MODULATED BEAM HAVING A CIRCULARLY POLARIZED COMPONENT ROTATING AT A FREQUENCY DIFFERING FROM THE FREQUENCY OF SAID INCIDENT BEAM BY THE FREQUENCY OF SAID MODULATING SIGNAL.
Claim 2
Dependent Claim
90 words
APPARATUS FOR MODULATING AN INCIDENT POLARIZED BEAM OF ELECTROMAGNETI RADIATION COMPRISING (A) FIELD RESPONSIVE MEANS FOR ELLIPTICALLY POLARIZING SAID INCIDENT BEAM, THE RESULTING ELLIPTICALLY POLARIZED BEAM HAVING A MAJOR ELLIPTIC AXIS AND (B) MODULATING SIGNAL MEANS FOR ROTATING SAID MAJOR ELLIPTIC AXIS OF POLARIZATION ABOUT THE AXIS OF SAID BEAM AT A FREQUENCY EQUAL TO ONE-HALF THE FREQUENCY OF SAID MODULATING SIGNAL, THE RESULTING MODULATED BEAM HAVING A CIRCULARLY POLARIZED COMPONENT ROTATING AT A FREQUENCY DIFFERING FROM THE FREQUENCY OF SAID INCIDENT BEAM BY THE FREQUENCY OF SAID MODULATING SIGNAL.
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) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |