USRE27972E
Expired / Lapsed
US
⏱️ 0.0 years remaining
Protective circuit for insulated gate metal oxide semiconductor field- effect device
Assignee: —
•
Filing: 1969-10-21
•
Granted: 1974-04-16
•
Expires: 1989-10-21
Abstract
Abstract A PROTECTIVE DEVICE CONNECTED TO A LINE FOR LIMITING THE VOLTAGE ON THE LINE TO A SAFE OPERATING RANGE, WHICH PROTECTIVE DEVICE COMPRISES A FIELD EFFECT TRANSISTOR ONE OUTPUT TERMINAL OF WHICH IS CONNECTED TO A REFERENCE POTENTIAL AND THE GATE AND THE OTHER OUTPUT TERMINAL OF WHICH ARE CONNECTED TO THE LINE.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:07
CPC Classifications
H; H10; H10D; H10D89/00; H10D89/60; H10D89/601; H03; H03F; H03F1/00; H03F1/52; H03F1/523; H03K; H03K17/00; H03K17/08; H03K17/081; H03K17/0812; H03K17/08122; H10D89/811; Y; Y10; Y10S; Y10S148/00; Y10S148/122; Y10S148/163
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-04-15 | 1977-10-15 | 1978-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-15 | 1981-10-15 | 1982-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-15 | 1985-10-15 | 1986-04-16 | $7700.00 | Window Closed / Lapsed |