Patent AU858932A successfully refreshed from Google Patents.
US3204104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Single-sideband light modulator
Assignee: Verizon Laboratories Inc
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Filing: 1962-07-02
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Granted: 1965-08-31
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Expires: 1982-07-02
Abstract
No abstract record available.
Inventors
- 👤 Donald H Baird
- 👤 Carl F Buhrer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 21:07
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/03; G02F1/0344
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
APPARATUS FOR MODULATING AN INCIDENT POLARIZED BEAM OF ELECTROMAGNETIC RADIATION COMPRISING (A) AN ELECTRO-OPTIC CRYSTAL HAVING A 3-FOLD ROTATION AXIS IN ITS POINT GROUP, SAID BEAM BEING DIRECTED THROUGH SAID CRYSTAL PARALLEL TO SAID AXIS, AND (B) MEANS FOR PRODUCING AN ELECTRIC FIELD WHICH ROTATES WITH RESPECT TO SAID CRYSTAL, SAID ELECTRIC FIELD ROTATING ABOUT SAID AXIS IN A PLANE PERPENDICULAR THERETO, THE BEAM EMERGING FROM SAID ELECTRO-OPTIC CRYSTAL HAVING A COMPONENT AT A FREQUENCY DIFFERING FROM THE FREQUENCY OF THE INCIDENT BEAM BY THE FREQUENCY OF ROTATION OF SAID ELECTRIC FIELD.
Claim 2
Dependent Claim
92 words
APPARATUS FOR MODULATING AN INCIDENT POLARIZED BEAM OF ELECTROMAGNETIC RADIATION COMPRISING (A) AN ELECTRO-OPTIC CRYSTAL HAVING A 3-FOLD ROTATION AXIS IN ITS POINT GROUP, SAID BEAM BEING DIRECTED THROUGH SAID CRYSTAL PARALLEL TO SAID AXIS, AND (B) MEANS FOR PRODUCING AN ELECTRIC FIELD WHICH ROTATES WITH RESPECT TO SAID CRYSTAL, SAID ELECTRIC FIELD ROTATING ABOUT SAID AXIS IN A PLANE PERPENDICULAR THERETO, THE BEAM EMERGING FROM SAID ELECTRO-OPTIC CRYSTAL HAVING A COMPONENT AT A FREQUENCY DIFFERING FROM THE FREQUENCY OF THE INCIDENT BEAM BY THE FREQUENCY OF ROTATION OF SAID ELECTRIC FIELD.
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) | 1968-08-30 | 1969-03-01 | 1969-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-30 | 1973-03-01 | 1973-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-30 | 1977-03-01 | 1977-08-31 | $7700.00 | Window Closed / Lapsed |