Patent US2553655A successfully refreshed from Google Patents.
US3373291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Means for protecting transistors from high voltage pulses
Assignee: HUBERT A BURNS
•
Filing: 1961-08-21
•
Granted: 1968-03-12
•
Expires: 1981-08-21
Abstract
No abstract record available.
Inventors
- 👤 Peterson Glen
- 👤 Hubert A Burns
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 09:18
CPC Classifications
H; H02; H02H; H02H9/00; H02H9/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A THREE-TERMINAL VOLTAGE PROTECTIVE DEVICE FOR TRANSISTORS COMPRISES OF TIME DELAY MEANS, PULSE DISSIPATIVE MEANS AND VOLTAGE BREAK-DOWN MEANS, SAID TERMINALS IDENTIFIED AS INPUT, OUTPUT AND GROUND TERMINALS, RESPECTIVELY, ONE TERMINAL OF SAID TIME DELAY MEANS CONNECTED TO SAID OUTPUT TERMINAL, A SECOND TERMINAL OF SAID TIME DELAY MEANS CONNECTED TO ONE TERMINAL OF EACH OF SAID PULSE DISSIPATIVE MEANS AND SAID VOLTAGE BREAK-DOWN MEANS, A SECOND TERMINAL OF SAID PULSE DISSIPATIVE MEANS CONNECTED TO SAID INPUT TERMINAL, A SECOND TERMINAL OF SAID VOLTAGE BREAK-DOWN MEANS CONNECTED TO SAID GROUND TERMINAL, SAID TIME DELAY MEANS AND SAID PULSE DISSIPATIVE MEANS, IN ADDITION TO SAID DELAY AND DISSIPATIVE FUNCTIONS, TOGETHER PROVIDING AT LEAST ONE LOW RESISTANCE PATH FOR THE CONDUCTION OF DIRECT CURRENTS BETWEEN SAID INPUT AND OUTPUT TERMINALS.
Claim 2
Dependent Claim
128 words
A THREE-TERMINAL VOLTAGE PROTECTIVE DEVICE FOR TRANSISTORS COMPRISES OF TIME DELAY MEANS, PULSE DISSIPATIVE MEANS AND VOLTAGE BREAK-DOWN MEANS, SAID TERMINALS IDENTIFIED AS INPUT, OUTPUT AND GROUND TERMINALS, RESPECTIVELY, ONE TERMINAL OF SAID TIME DELAY MEANS CONNECTED TO SAID OUTPUT TERMINAL, A SECOND TERMINAL OF SAID TIME DELAY MEANS CONNECTED TO ONE TERMINAL OF EACH OF SAID PULSE DISSIPATIVE MEANS AND SAID VOLTAGE BREAK-DOWN MEANS, A SECOND TERMINAL OF SAID PULSE DISSIPATIVE MEANS CONNECTED TO SAID INPUT TERMINAL, A SECOND TERMINAL OF SAID VOLTAGE BREAK-DOWN MEANS CONNECTED TO SAID GROUND TERMINAL, SAID TIME DELAY MEANS AND SAID PULSE DISSIPATIVE MEANS, IN ADDITION TO SAID DELAY AND DISSIPATIVE FUNCTIONS, TOGETHER PROVIDING AT LEAST ONE LOW RESISTANCE PATH FOR THE CONDUCTION OF DIRECT CURRENTS BETWEEN SAID INPUT AND OUTPUT TERMINALS.
References Cited (Backward Citations)
US1211822A
Cited
US1816838A
Cited
US1865409A
Cited
US2338405A
Cited
US2571027A
Cited
US2575232A
Cited
US2815445A
Cited
US2845529A
Cited
US2815446A
Cited
US2789254A
Cited
US3052820A
Cited
US3049646A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-03-12 | 1971-09-11 | 1972-03-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-03-12 | 1975-09-11 | 1976-03-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-03-12 | 1979-09-11 | 1980-03-12 | $7700.00 | Window Closed / Lapsed |