US3249880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Temperature stabilized semiconductor detector
Assignee: GTE Sylvania Inc
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Filing: 1961-05-29
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Granted: 1966-05-03
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Expires: 1981-05-29
Abstract
No abstract record available.
Inventors
- 👤 Daniel P Sante
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 07:32
CPC Classifications
H; H03; H03D; H03D1/00; H03D1/14; H03D1/18; Y; Y10; Y10S; Y10S323/00; Y10S323/907
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
IN A WIDE-RANGE AMPLITUDE DETECTOR, THE COMBINATION COMPRISING: A FIRST SEMICONDUCTOR ELEMENT HAVING A FORWARD OPERATING RANGE WHEREIN ITS RESISTANCE IS RELATIVELY HIGH BELOW A CHARACTERISTIC THRESHOLD VOLTAGE LEVEL THEREACROSS AND IS RELATIVELY LOW ABOVE SAID THRESHOLD LEVEL, A SECOND SEMICONDUCTOR ELEMENT, A DIRECT CURRENT SOURCE, SAID FIRST AND SAID SECOND ELEMENTS HAVING SIMILAR VOLTAGE-VERSUS-CURRENT CHARACTERISTICS; A CURRENT LIMITING IMPEDANCE AND MEANS CONNECTING SAID SECOND CURRENT AND SAID IMPEDANCE IN SERIES ACROSS SAID DIRECT CURRENT SOURCE FOR ESTABLISHING A FORWARD BIAS VOLTAGE ACROSS SAID SECOND ELEMENT, MEANS COUPLED TO SAID FIRST ELEMENT AND RESPONSIVE TO AN AMPLITUDE-MODULATED CARRIER SIGNAL FOR PRODUCING A FLOW OF CURRENT THROUGH SAID ELEMENTS, AND MEANS COUPLED TO SAID FIRST ELEMENT AND RESPONSIVE TO SAID FLOW OF CURRENT FOR DERIVING A DIRECT CURRENT SIGNAL WHICH VARIES AS A FUNCTION OF THE AMPLITUDE MODULATIONS ON SAID CARRIER SIGNAL.
Claim 2
Dependent Claim
141 words
IN A WIDE-RANGE AMPLITUDE DETECTOR, THE COMBINATION COMPRISING: A FIRST SEMICONDUCTOR ELEMENT HAVING A FORWARD OPERATING RANGE WHEREIN ITS RESISTANCE IS RELATIVELY HIGH BELOW A CHARACTERISTIC THRESHOLD VOLTAGE LEVEL THEREACROSS AND IS RELATIVELY LOW ABOVE SAID THRESHOLD LEVEL, A SECOND SEMICONDUCTOR ELEMENT, A DIRECT CURRENT SOURCE, SAID FIRST AND SAID SECOND ELEMENTS HAVING SIMILAR VOLTAGE-VERSUS-CURRENT CHARACTERISTICS; A CURRENT LIMITING IMPEDANCE AND MEANS CONNECTING SAID SECOND CURRENT AND SAID IMPEDANCE IN SERIES ACROSS SAID DIRECT CURRENT SOURCE FOR ESTABLISHING A FORWARD BIAS VOLTAGE ACROSS SAID SECOND ELEMENT, MEANS COUPLED TO SAID FIRST ELEMENT AND RESPONSIVE TO AN AMPLITUDE-MODULATED CARRIER SIGNAL FOR PRODUCING A FLOW OF CURRENT THROUGH SAID ELEMENTS, AND MEANS COUPLED TO SAID FIRST ELEMENT AND RESPONSIVE TO SAID FLOW OF CURRENT FOR DERIVING A DIRECT CURRENT SIGNAL WHICH VARIES AS A FUNCTION OF THE AMPLITUDE MODULATIONS ON SAID CARRIER 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) | 1969-05-02 | 1969-11-01 | 1970-05-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-05-02 | 1973-11-01 | 1974-05-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-05-02 | 1977-11-01 | 1978-05-03 | $7700.00 | Window Closed / Lapsed |