US3223854A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Avalanche transistor circuit
Assignee: Revvity Inc
•
Filing: 1963-04-24
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Granted: 1965-12-14
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Expires: 1983-04-24
Abstract
No abstract record available.
Inventors
- 👤 Ramon D Hansen
- 👤 Delbert E Bridenstine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:48
CPC Classifications
H; H03; H03K; H03K3/00; H03K3/02; H03K3/335
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
82 words
IN AN AVALANCHE TRANSISTOR CIRCUIT COMPRISNG A SEMICONDUCTIVE DEVICE OPERAING IN THE AVALANCHE MODE AND HAVING A CONDUCTIVE AND NON-CONDUCTIVE STATE, SAID DEVICE INCLUDING EMITTER, BASE AND COLLECTOR ELECTRODES; A SOURCE OF OPERATING POTENTIAL COUPLED TO SAID COLLECTOR THROUGH A RESISTOR; A CAPACITOR CONNECTED TO THE JUNCTION OF SAID RESISTOR AND SAID COLLECTOR; THE IMPROVEMENT FOR REDUCING THE RECOVERY TIME OF SAID CIRCUIT, SAID IMPROVEMENT COMPRISING, IN SERIES, A SECOND RESISTOR AND A FOUR-LAYER DIODE CONNECTED BETWEEN SAID SOURCE AND SAID JUNCTION.
References Cited (Backward Citations)
US3017519A
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US3080489A
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US3171040A
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US3167661A
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US3114056A
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US3105160A
Cited
US3141981A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-12-13 | 1969-06-14 | 1969-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-12-13 | 1973-06-14 | 1973-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-12-13 | 1977-06-14 | 1977-12-14 | $7700.00 | Window Closed / Lapsed |