US3235807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Noise eliminator
Assignee: Individual
•
Filing: 1961-11-15
•
Granted: 1966-02-15
•
Expires: 1981-11-15
Abstract
No abstract record available.
Inventors
- 👤 William N Appel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:35
CPC Classifications
H; H04; H04B; H04B1/00; H04B1/06; H04B1/10; H04B1/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
179 words
IN COMBINATION, MEANS TO RECEIVE INTELLIGENCE BEARING ELECTRICAL ENERGY, MEANS TO SEPARATE SAID ELECTRICAL ENERGY INTO TWO INFORMATION-BEARING SIGNALS IN WHICH THE INFORMATION IS CONTAINED BY SAID SIGNALS IN TIME COINCIDENCE AND WHERE THE INSTANTANEOUS AMPLITUDE OF ONLY ONE OF SAID SIGNALS HAS BEEN INCREASED BY RANDOM UNDERSIRABLE NOISE, AT LEAST ONE SIGNAL TRANSMISSION CIRCUIT HAVING IN SERIES CIRCUIT RELATION A RESISTOR AND A FIRST DIODE HAVING A RESISTANCE IN THE FORWARD DIRECTION A SMALL FRACTION OF ITS RESISTANCE IN THE REVERSE DIRECTION, AN OUTPUT CIRCUIT CONNECTED TO THE JUNCTION OF SAID RESISTOR AND SAID FIRST DIODE AND INCLUDING THEREIN A SECOND DIODE A TERMINAL OF WHICH IS CONNECTED TO A COMPARABLE TERMINAL OF SAID FIRST DIODE, AND MEANS FOR APPLYING A FIRST OF SAID TWO SIGNALS TO THE END OF SAID RESISTOR REMOTE FROM SAID JUNCTION AND A SECOND OF SAID TWO SIGNALS TO THE OTHER TERMINAL OF SAID FIRST DIODE FOR SELECTIVE TRANSMITTAL TO SAID SECOND DIODE OF THE SIGNAL OF LESSER INSTANTANEOUS AMPLITUDE FOR ELIMINATION FROM SAID OUTUT CIRCUIT OF SAID SIGNAL OF INSTANTANEOUSLY INCREASED AMPLITUDE.
Claim 2
Dependent Claim
179 words
IN COMBINATION, MEANS TO RECEIVE INTELLIGENCE BEARING ELECTRICAL ENERGY, MEANS TO SEPARATE SAID ELECTRICAL ENERGY INTO TWO INFORMATION-BEARING SIGNALS IN WHICH THE INFORMATION IS CONTAINED BY SAID SIGNALS IN TIME COINCIDENCE AND WHERE THE INSTANTANEOUS AMPLITUDE OF ONLY ONE OF SAID SIGNALS HAS BEEN INCREASED BY RANDOM UNDERSIRABLE NOISE, AT LEAST ONE SIGNAL TRANSMISSION CIRCUIT HAVING IN SERIES CIRCUIT RELATION A RESISTOR AND A FIRST DIODE HAVING A RESISTANCE IN THE FORWARD DIRECTION A SMALL FRACTION OF ITS RESISTANCE IN THE REVERSE DIRECTION, AN OUTPUT CIRCUIT CONNECTED TO THE JUNCTION OF SAID RESISTOR AND SAID FIRST DIODE AND INCLUDING THEREIN A SECOND DIODE A TERMINAL OF WHICH IS CONNECTED TO A COMPARABLE TERMINAL OF SAID FIRST DIODE, AND MEANS FOR APPLYING A FIRST OF SAID TWO SIGNALS TO THE END OF SAID RESISTOR REMOTE FROM SAID JUNCTION AND A SECOND OF SAID TWO SIGNALS TO THE OTHER TERMINAL OF SAID FIRST DIODE FOR SELECTIVE TRANSMITTAL TO SAID SECOND DIODE OF THE SIGNAL OF LESSER INSTANTANEOUS AMPLITUDE FOR ELIMINATION FROM SAID OUTUT CIRCUIT OF SAID SIGNAL OF INSTANTANEOUSLY INCREASED AMPLITUDE.
References Cited (Backward Citations)
US2725467A
Cited
US2903577A
Cited
US2968718A
Cited
US3046415A
Cited
US2946010A
Cited
US3048712A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-14 | 1969-08-16 | 1970-02-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-14 | 1973-08-16 | 1974-02-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-14 | 1977-08-16 | 1978-02-15 | $7700.00 | Window Closed / Lapsed |