Patent US3130377A successfully refreshed from Google Patents.
US3130377A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Semiconductor integrated circuit utilizing field-effect transistors
Assignee: Texas Instruments Inc
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Filing: 1960-05-02
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Granted: 1964-04-21
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Expires: 1980-05-02
Abstract
No abstract record available.
Inventors
- 👤 Joseph M Brown
- 👤 Arthur D Evans
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 11:38
CPC Classifications
H; H10; H10D; H10D99/00; H10D84/00; H10D84/01; H10D84/0112; H10D84/0123; H10D84/0126; H10D84/0158; H10D84/02; H10D84/03; H10D84/038; H10D84/40; H10D84/401; H10D84/403; H10D84/406; H10D84/60; H10D84/611; H10D84/613; H10D84/615; H10P; H10P95/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
148 words
A ZERO PHASE SHIFT OSCILLATOR CIRCUIT COMPRISING FIRST AMPLIFYING MEANS INCLUDING A SEMICONDUCTOR AMPLIFIER DEVICE AND HAVING INPUT, OUTPUT AND COMMON TERMINALS, SECOND AMPLIFYING MEANS INCLUDING A FIELD-EFFECT DEVICE AND HAVING INPUT, OUTPUT AND COMMON TERMINALS, MEANS CONNECTING THE INPUT TERMINALS OF SAID FIRST AMPLIFYING MEANS TO THE OUTPUT TERMINAL OF SAID SECOND AMPLIFYING MEANS, AND A PHASE SHIFT NETWORK COUPLING THE OUTPUT TERMINAL OF SAID FIRST AMPLIFYING MEANS TO THE INPUT TERMINAL OF SAID SECOND AMPLIFYING MEANS, SAID PHASE SHIFT NETWORK INCLUDING FIRST CAPACITANCE MEANS AND FIRST VOLTAGE-VARIABLE RESISTANCE MEANS HAVING A CONTROL ELEMENT CONNECTED IN PARALLEL BETWEEN SAID INPUT AND COMMON TERMINALS OF SAID SECOND AMPLIFYING MEANS, SAID PHASE SHIFT NETWORK FURTHER INCLUDING SECOND CAPACITANCE MEANS AND SECOND VOLTAGEVARIABLE RESISTANCE MEANS HAVING A CONTROL ELEMENT CONNECTED IN SERIES BETWEEN SAID OUTPUT TERMINAL OF SAID FIRST AMPLIFYING MEANS AND SAID INPUT TERMINAL OF SAID SECOND AMPLIFYING MEANS.
Claim 2
Dependent Claim
148 words
A ZERO PHASE SHIFT OSCILLATOR CIRCUIT COMPRISING FIRST AMPLIFYING MEANS INCLUDING A SEMICONDUCTOR AMPLIFIER DEVICE AND HAVING INPUT, OUTPUT AND COMMON TERMINALS, SECOND AMPLIFYING MEANS INCLUDING A FIELD-EFFECT DEVICE AND HAVING INPUT, OUTPUT AND COMMON TERMINALS, MEANS CONNECTING THE INPUT TERMINALS OF SAID FIRST AMPLIFYING MEANS TO THE OUTPUT TERMINAL OF SAID SECOND AMPLIFYING MEANS, AND A PHASE SHIFT NETWORK COUPLING THE OUTPUT TERMINAL OF SAID FIRST AMPLIFYING MEANS TO THE INPUT TERMINAL OF SAID SECOND AMPLIFYING MEANS, SAID PHASE SHIFT NETWORK INCLUDING FIRST CAPACITANCE MEANS AND FIRST VOLTAGE-VARIABLE RESISTANCE MEANS HAVING A CONTROL ELEMENT CONNECTED IN PARALLEL BETWEEN SAID INPUT AND COMMON TERMINALS OF SAID SECOND AMPLIFYING MEANS, SAID PHASE SHIFT NETWORK FURTHER INCLUDING SECOND CAPACITANCE MEANS AND SECOND VOLTAGEVARIABLE RESISTANCE MEANS HAVING A CONTROL ELEMENT CONNECTED IN SERIES BETWEEN SAID OUTPUT TERMINAL OF SAID FIRST AMPLIFYING MEANS AND SAID INPUT TERMINAL OF SAID SECOND AMPLIFYING MEANS.
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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) | 1967-04-21 | 1967-10-21 | 1968-04-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-21 | 1971-10-21 | 1972-04-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-21 | 1975-10-21 | 1976-04-21 | $7700.00 | Window Closed / Lapsed |