US3188487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Switching circuits using multilayer semiconductor devices
Assignee: Hunt Electronics Co
•
Filing: 1961-12-19
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Granted: 1965-06-08
•
Expires: 1981-12-19
Abstract
No abstract record available.
Inventors
- 👤 Jearld L Hutson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 18:25
CPC Classifications
G; G05; G05F; G05F1/00; G05F1/10; G05F1/12; G05F1/40; G05F1/44; B; B01; B01D; B01D19/00; B01D19/02; C; C12; C12N; C12N1/00; C12N1/02; H; H01; H01M; H01M8/00; H01M8/10; H01M8/12; H01M8/1233; H03; H03K; H03K17/00; H03K17/51; H03K17/56; H03K17/70; Y; Y02; Y02E; Y02E60/00; Y02E60/30; Y02E60/50
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A SWITCHING CIRCUIT COMPRISING A MULTILAYER DIODE SEMICONDUCTOR DEVICE CAPABLE OF BEING SWITCHED FROM A NORMALLY HIGH IMPEDANCE STATE TO A LOW IMPEDANCE STATE, INDUCTIVE MEANS CONNECTED IN CIRCUIT WITH SAID SEMICONDUCTOR DEVICE, MEANS TO COUPLE A CONTROL SIGNAL VOLTAGE TO SAID INDUCTIVE MEANS, AND REACTANCE MEANS COOPERATING WITH SAID INDUCTIVE MEANS TO PRODUCE A TRIGGERING VOLTAGE
Claim 2
Dependent Claim
57 words
A SWITCHING CIRCUIT COMPRISING A MULTILAYER DIODE SEMICONDUCTOR DEVICE CAPABLE OF BEING SWITCHED FROM A NORMALLY HIGH IMPEDANCE STATE TO A LOW IMPEDANCE STATE, INDUCTIVE MEANS CONNECTED IN CIRCUIT WITH SAID SEMICONDUCTOR DEVICE, MEANS TO COUPLE A CONTROL SIGNAL VOLTAGE TO SAID INDUCTIVE MEANS, AND REACTANCE MEANS COOPERATING WITH SAID INDUCTIVE MEANS TO PRODUCE A TRIGGERING VOLTAGE
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-07 | 1968-12-07 | 1969-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-07 | 1972-12-07 | 1973-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-07 | 1976-12-07 | 1977-06-08 | $7700.00 | Window Closed / Lapsed |