Patent US3456646A successfully refreshed from Google Patents.
Patent US3233122A successfully refreshed from Google Patents.
US3233122A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phase detector
Assignee: RCA Corp
•
Filing: 1962-12-03
•
Granted: 1966-02-01
•
Expires: 1982-12-03
Abstract
No abstract record available.
Inventors
- 👤 Gerald E Theriault
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:55
CPC Classifications
H; H03; H03D; H03D13/00; H04; H04N; H04N5/00; H04N5/04; H04N5/12; H04N5/126
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
99 words
A PHASE DETECTOR CIRCUIT COMPRISING A FIRST SOURCE OF SIGNALS AND A SECOND SOURCE OF SIGNALS, AN INSULATED- GATE FIELD-EFFECT TRANSISTOR HAVING A GATE ELECTRODE AND A PAIR OF OPERATING ELECTRODES INTERCHANGEABLY OPERATING AS SOURCE AND DRAIN ELECTRODES DEPENDING ON THE INSTANTANEOUS POTENTIALS APPLIED THERETO, A PAIR OF RESISTORS CONNECTED IN SERIES BETWEEN SAID OPERATING ELECTRODES, MEANS CONNECTING SAID GATE ELECTRODE TO THE JUNCTION OF SAID PAIR OF RESISTORS, MEANS INCLUDING A PAIR OF CAPACITORS FOR APPLYING SIGNALS FROM SAID FIRST SOURCE OF SIGNALS BETWEEN SAID OPERATING ELECTRODES IN BALANCED RELATION WITH RESPECT TO A POINT OF REFERENCE POTENTIAL,
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) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |