Patent US3219942A successfully refreshed from Google Patents.
US3219942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical circuit using thermal elements
Assignee: Consolidated Electrodynamics Corp
•
Filing: 1960-11-18
•
Granted: 1965-11-23
•
Expires: 1980-11-18
Abstract
No abstract record available.
Inventors
- 👤 Norton W Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:22
CPC Classifications
H; H03; H03F; H03F1/00; H03F1/30; H03F1/303
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
91 words
A CIRCUIT FOR MODULATING AN ELECTRIC SIGNAL, THE CIRCUIT HAVING A SIGNAL INPUT AND A SIGNAL OUTPUT, A SEMICONDUCTOR OXIDE THERMISTOR CONNECTED IN THE CIRCUIT SO AT LEAST A PORTION OF A SIGNAL APPLIED TO THE INPUT PASSES THROUGH THE THERMISTOR, MEANS FOR INREASING AND DECREASING THE TEMPERATURE OF THE THERMISTOR INDEPENDENTLY OF THE SIGNAL AND AT A RATE GREATER THAN THE RATE OF FREQUENCY OF THE SIGNAL TO MODULATE THE AMOUNT OF SIGNAL PASSING THROUGH THE THERMISTOR, MEANS FOR AMPLIFYING THE MODULATED SIGNAL, AND MEANS FOR DEMODULATING THE AMPLIFIED SIGNAL.
Claim 2
Dependent Claim
91 words
A CIRCUIT FOR MODULATING AN ELECTRIC SIGNAL, THE CIRCUIT HAVING A SIGNAL INPUT AND A SIGNAL OUTPUT, A SEMICONDUCTOR OXIDE THERMISTOR CONNECTED IN THE CIRCUIT SO AT LEAST A PORTION OF A SIGNAL APPLIED TO THE INPUT PASSES THROUGH THE THERMISTOR, MEANS FOR INREASING AND DECREASING THE TEMPERATURE OF THE THERMISTOR INDEPENDENTLY OF THE SIGNAL AND AT A RATE GREATER THAN THE RATE OF FREQUENCY OF THE SIGNAL TO MODULATE THE AMOUNT OF SIGNAL PASSING THROUGH THE THERMISTOR, MEANS FOR AMPLIFYING THE MODULATED SIGNAL, AND MEANS FOR DEMODULATING THE AMPLIFIED 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) | 1968-11-22 | 1969-05-24 | 1969-11-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-22 | 1973-05-24 | 1973-11-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-22 | 1977-05-24 | 1977-11-23 | $7700.00 | Window Closed / Lapsed |