Patent US3131310A successfully refreshed from Google Patents.
US3131310A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Transistor circuit for generating narrow pulses
Assignee: US Philips Corp
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Filing: 1960-05-16
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Granted: 1964-04-28
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Expires: 1980-05-16
Abstract
No abstract record available.
Inventors
- 👤 Marcel Antoine Arnold Gh Marie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:48
CPC Classifications
H; H03; H03K; H03K5/00; H03K5/01; H03K5/04; H03K5/07; H03K17/00; H03K17/18; H03K3/00; H03K3/02; H03K3/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
A CIRCUIT FOR PRODUCING PULSES COMPRISING A TRANSISTOR HAVING BASE, EMITTER AND COLLECTOR ELECTRODES, A SOURCE OF OPERATING VOLTAGE HAVING FIRST AND SECOND TERMINALS, A FIRST INDUCTOR HAVING A TAP, MEANS CONNECTING SAID FIRST INDUCTOR BETWEEN SAID COLLECTOR ELECTRODE AND FIRST TERMINAL, IMPEDANCE MEANS CONNECTED BETWEEN SAID EMITTER ELECTRODE AND SECOND TERMINAL, CAPACITOR MEANS CONNECTED BETWEEN SAID TAP AND EMITTER ELECTRODE, A SERIES CIRCUIT OF A RECTIFIER AND A SECOND INDUCTOR, AND MEANS CONNECTING SAID SERIES CIRCUIT IN PARALLEL WITH SAID FIRST INDUCTOR, SAID RECTIFIER BEING CONNECTED TO BE NON-CONDUCTIVE WHEN COLLECTOR CURRENT FLOWS IN SAID TRANSISTOR.
Claim 2
Dependent Claim
97 words
A CIRCUIT FOR PRODUCING PULSES COMPRISING A TRANSISTOR HAVING BASE, EMITTER AND COLLECTOR ELECTRODES, A SOURCE OF OPERATING VOLTAGE HAVING FIRST AND SECOND TERMINALS, A FIRST INDUCTOR HAVING A TAP, MEANS CONNECTING SAID FIRST INDUCTOR BETWEEN SAID COLLECTOR ELECTRODE AND FIRST TERMINAL, IMPEDANCE MEANS CONNECTED BETWEEN SAID EMITTER ELECTRODE AND SECOND TERMINAL, CAPACITOR MEANS CONNECTED BETWEEN SAID TAP AND EMITTER ELECTRODE, A SERIES CIRCUIT OF A RECTIFIER AND A SECOND INDUCTOR, AND MEANS CONNECTING SAID SERIES CIRCUIT IN PARALLEL WITH SAID FIRST INDUCTOR, SAID RECTIFIER BEING CONNECTED TO BE NON-CONDUCTIVE WHEN COLLECTOR CURRENT FLOWS IN SAID TRANSISTOR.
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) | 1967-04-28 | 1967-10-28 | 1968-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-28 | 1971-10-28 | 1972-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-28 | 1975-10-28 | 1976-04-28 | $7700.00 | Window Closed / Lapsed |