Patent US2756378A successfully refreshed from Google Patents.
Patent US3233125A successfully refreshed from Google Patents.
US3233125A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistor technology
Assignee: TRW Semiconductors Inc
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Filing: 1963-04-23
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Granted: 1966-02-01
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Expires: 1983-04-23
Abstract
No abstract record available.
Inventors
- 👤 James L Buie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 23:41
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/04; H03F3/14; H03F1/00; H03F1/30; H03F1/302; H03F1/34; H03K; H03K17/00; H03K17/14; H03K19/00; H03K19/02; H03K19/08; H03K19/082; H03K19/084; H03K19/088
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
IN A TRANSISTOR CIRCUIT, A CONSTANT-CURRENT GENERATOR COMPRISING: A JUNCTION TRANSISTOR HAVING A BASE ELECTRODE, A COLLECTOR ELECTRODE AND AN EMITTER ELECTRODE, THE COLLECTOR JUNCTION OF SAID TRANSISTOR BEING FORWARD BIASED TO SATURATION; MEANS INTERCOUPLING THE OUTPUT OF A PRECEDING STAGE IN SAID CIRCUIT TO THE BASE ELECTRODE OF SAID TRANSISTOR; AND, MEANS DIRECT-CURRENT COUPLING THE EMITTER ELECTRODE OF SAID TRANSISTOR TO SAID PRECEDING STAGE TO INVERSELY FEED BACK TO SAID PRECEDING STAGE A CURRENT DERIVED FROM THE OUTPUT CURRENT OF SAID PRECEDING STAGE.
Claim 2
Dependent Claim
84 words
IN A TRANSISTOR CIRCUIT, A CONSTANT-CURRENT GENERATOR COMPRISING: A JUNCTION TRANSISTOR HAVING A BASE ELECTRODE, A COLLECTOR ELECTRODE AND AN EMITTER ELECTRODE, THE COLLECTOR JUNCTION OF SAID TRANSISTOR BEING FORWARD BIASED TO SATURATION; MEANS INTERCOUPLING THE OUTPUT OF A PRECEDING STAGE IN SAID CIRCUIT TO THE BASE ELECTRODE OF SAID TRANSISTOR; AND, MEANS DIRECT-CURRENT COUPLING THE EMITTER ELECTRODE OF SAID TRANSISTOR TO SAID PRECEDING STAGE TO INVERSELY FEED BACK TO SAID PRECEDING STAGE A CURRENT DERIVED FROM THE OUTPUT CURRENT OF SAID PRECEDING STAGE.
References Cited (Backward Citations)
US3075151A
Cited
US3064205A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |