US3317752A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Switching circuit utilizing bistable semiconductor devices
Assignee: AT&T Inc
•
Filing: 1964-06-11
•
Granted: 1967-05-02
•
Expires: 1984-06-11
Abstract
No abstract record available.
Inventors
- 👤 Zuk Paul
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:32
CPC Classifications
H; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/72; H03K17/725
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
196 words
AN ELECTRONIC SWITCH COMPRISING, IN COMBINATION: A PLURALITY OF BISTABLE SEMICONDUCTOR DEVICES, EACH OF SAID DEVICES HAVING AN ANODE, A CATHODE AND A GATE ELECTRODE, MEANS FOR CONNECTING THE ANODE OF EACH DEVICE TO THE CATHODE OF THE NEXT SUCCEEDING DEVICE, MEANS FOR CONNECTING A VOLTAGE SOURCE AND UTILIZATION MEANS BETWEEN THE CATHODE OF A FIRST OF SAID DEVICES AND THE ANODE OF A LAST OF SAID DEVICES, A VOLTAGE DIVIDER NETWORK CONNECTED BETWEEN SAID CATHODE OF SAID FIRST DEVICE AND SAID ANODE OF SAID LAST DEVICE, MEANS FOR CONNECTING THE CATHODES OF THE REMAINING DEVICES BETWEEN SAID FIRST AND SAID LAST DEVICE TO PROGRESSIVELY HIGHER POTENTIAL POINTS ALONG SAID VOLTAGE DIVIDER NETWORK, MEANS FOR CONNECTING THE GATE ELECTRODE OF SAID LAST AND SAID REMAINING DEVICES TO POTENTIAL POINTS ALONG SAID VOLTAGE DIVIDER NETWORK LOWER THAN THE RESPECTIVE POTENTIALS OF THEIR CORRESPONDING CATHODES, MEANS FOR REVERSE-BIASING SAID FIRST DEVICE, MEANS FOR APPLYING TRIGGER PULSES TO THE GATE ELECTRODE OF SAID FIRST DEVICE, AND CAPACITANCE MEANS SHUNTING ELEMENTS OF SAID VOLTAGE DIVIDER NETWORK, SAID CAPACITANCE MEANS ADAPTED FOR PROVIDING TRIGGERING CURRENT TO SAID GATE ELECTRODES OF SAID REMAINING AND LAST DEVICES IN RESPONSE TO SAID TRIGGER PULSES.
Claim 2
Dependent Claim
196 words
AN ELECTRONIC SWITCH COMPRISING, IN COMBINATION: A PLURALITY OF BISTABLE SEMICONDUCTOR DEVICES, EACH OF SAID DEVICES HAVING AN ANODE, A CATHODE AND A GATE ELECTRODE, MEANS FOR CONNECTING THE ANODE OF EACH DEVICE TO THE CATHODE OF THE NEXT SUCCEEDING DEVICE, MEANS FOR CONNECTING A VOLTAGE SOURCE AND UTILIZATION MEANS BETWEEN THE CATHODE OF A FIRST OF SAID DEVICES AND THE ANODE OF A LAST OF SAID DEVICES, A VOLTAGE DIVIDER NETWORK CONNECTED BETWEEN SAID CATHODE OF SAID FIRST DEVICE AND SAID ANODE OF SAID LAST DEVICE, MEANS FOR CONNECTING THE CATHODES OF THE REMAINING DEVICES BETWEEN SAID FIRST AND SAID LAST DEVICE TO PROGRESSIVELY HIGHER POTENTIAL POINTS ALONG SAID VOLTAGE DIVIDER NETWORK, MEANS FOR CONNECTING THE GATE ELECTRODE OF SAID LAST AND SAID REMAINING DEVICES TO POTENTIAL POINTS ALONG SAID VOLTAGE DIVIDER NETWORK LOWER THAN THE RESPECTIVE POTENTIALS OF THEIR CORRESPONDING CATHODES, MEANS FOR REVERSE-BIASING SAID FIRST DEVICE, MEANS FOR APPLYING TRIGGER PULSES TO THE GATE ELECTRODE OF SAID FIRST DEVICE, AND CAPACITANCE MEANS SHUNTING ELEMENTS OF SAID VOLTAGE DIVIDER NETWORK, SAID CAPACITANCE MEANS ADAPTED FOR PROVIDING TRIGGERING CURRENT TO SAID GATE ELECTRODES OF SAID REMAINING AND LAST DEVICES IN RESPONSE TO SAID TRIGGER PULSES.
References Cited (Backward Citations)
US3100268A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-01 | 1970-10-31 | 1971-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-01 | 1974-10-31 | 1975-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-01 | 1978-10-31 | 1979-05-02 | $7700.00 | Window Closed / Lapsed |