US3259016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tunable semiconductor optical modulator
Assignee: RCA Corp
•
Filing: 1962-11-28
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Granted: 1966-07-05
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Expires: 1982-11-28
Abstract
No abstract record available.
Inventors
- 👤 Rosenblum Bruce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:35
CPC Classifications
G; G02; G02F; G02F1/00; G02F1/01; G02F1/09; G02F1/091
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
IN COMBINTION, (A) MEANS FOR GENERATING AN OPTICAL BEAM AT A FIRST FREQUENCY, (B) A SEMICONDUCTOR POSITIONED IN THE PATH OF SAID OPTICAL BEAM, SAID SEMICONDUCTOR HAVING AN ABSORPTION EDGE AT A FREQUENCY LOWER THAN SAID FIRST FREQUENCY AND SAID SEMICONDUCTOR BEING CAPABLE OF EXHIBITING AN ADDITIONAL ABSORPTION EDGE AT A FREQUENCY AT OR NEAR SAID FIRST FREQUENCY, (C) MAGNETIC FIELD MEANS FOR ESTABLISHING LANDAU LEVELS, AND THEREBY ADDITION ABSORPTION EDGES INCLUDING SAID ADDITIONAL ABSORPTION EDGE OF A FREQUENCY AT OR NEAR SAID FIRST FREQUENCY, IN SAID SEMICONDUCTOR, AND (D) MEANS FOR SHIFTING THE FREQUENCIES OF SAID ABSORPTION EDGES IN SAID SEMICONDUCTOR IN RESPONSE TO AND IN ACCORDANCE WITH A MODULATING SIGNAL.
Claim 2
Dependent Claim
112 words
IN COMBINTION, (A) MEANS FOR GENERATING AN OPTICAL BEAM AT A FIRST FREQUENCY, (B) A SEMICONDUCTOR POSITIONED IN THE PATH OF SAID OPTICAL BEAM, SAID SEMICONDUCTOR HAVING AN ABSORPTION EDGE AT A FREQUENCY LOWER THAN SAID FIRST FREQUENCY AND SAID SEMICONDUCTOR BEING CAPABLE OF EXHIBITING AN ADDITIONAL ABSORPTION EDGE AT A FREQUENCY AT OR NEAR SAID FIRST FREQUENCY, (C) MAGNETIC FIELD MEANS FOR ESTABLISHING LANDAU LEVELS, AND THEREBY ADDITION ABSORPTION EDGES INCLUDING SAID ADDITIONAL ABSORPTION EDGE OF A FREQUENCY AT OR NEAR SAID FIRST FREQUENCY, IN SAID SEMICONDUCTOR, AND (D) MEANS FOR SHIFTING THE FREQUENCIES OF SAID ABSORPTION EDGES IN SAID SEMICONDUCTOR IN RESPONSE TO AND IN ACCORDANCE WITH A MODULATING SIGNAL.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-07-04 | 1970-01-03 | 1970-07-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-07-04 | 1974-01-03 | 1974-07-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-07-04 | 1978-01-03 | 1978-07-05 | $7700.00 | Window Closed / Lapsed |