Patent US757532A successfully refreshed from Google Patents.
Patent US3280339A successfully refreshed from Google Patents.
US3280339A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bias circuits for high frequency circuits utilizing voltage controlled negative resistance devices
Assignee: RCA Corp
•
Filing: 1962-05-09
•
Granted: 1966-10-18
•
Expires: 1982-05-09
Abstract
No abstract record available.
Inventors
- 👤 Jr Henry S Sommers
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 03:20
CPC Classifications
H; H03; H03B; H03B7/00; H03B7/02; H03B7/06; H03B7/08; H03B7/12; H03B7/14; H03F; H03F3/00; H03F3/04; H03F3/10; H03F3/12; H03K; H03K3/00; H03K3/02; H03K3/313; H03K3/315
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
71 words
AN ELECTRICAL CIRCUIT INCLUDING A VOLTAGE CONTROLLED NEGATIVE RESISTANCE DEVICE, BIASING CIRCUIT MEANS FOR SAID DEVIC INCLUDING A NONLINEAR RESISTANCE ELEMENT DIRECT CURRENT CONDUCTIVELY CONNECTED IN PARALLEL WITH SAID DEVICE HAVING A DYNAMIC RESISTANCE WHICH IS LOWER THAN THE ABSOLUTE VALUE OF THE NEGATIVE RESISTANCE OF SAID DEVICE AT THE OPERATING VOLTAGE OF SAID DEVICE TO BIAS SAID DEVICE FOR STABLE OPERATION IN THE NEGATIVE RESISTANCE PORTION OF ITS OPERATING CHARACTERISTIC.
Claim 2
Dependent Claim
71 words
AN ELECTRICAL CIRCUIT INCLUDING A VOLTAGE CONTROLLED NEGATIVE RESISTANCE DEVICE, BIASING CIRCUIT MEANS FOR SAID DEVIC INCLUDING A NONLINEAR RESISTANCE ELEMENT DIRECT CURRENT CONDUCTIVELY CONNECTED IN PARALLEL WITH SAID DEVICE HAVING A DYNAMIC RESISTANCE WHICH IS LOWER THAN THE ABSOLUTE VALUE OF THE NEGATIVE RESISTANCE OF SAID DEVICE AT THE OPERATING VOLTAGE OF SAID DEVICE TO BIAS SAID DEVICE FOR STABLE OPERATION IN THE NEGATIVE RESISTANCE PORTION OF ITS OPERATING CHARACTERISTIC.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-10-17 | 1970-04-18 | 1970-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-10-17 | 1974-04-18 | 1974-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-10-17 | 1978-04-18 | 1978-10-18 | $7700.00 | Window Closed / Lapsed |