Patent US3170137A successfully refreshed from Google Patents.
US3170137A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of improving electrical signal transmission in wells
Assignee: California Research LLC
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Filing: 1962-07-12
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Granted: 1965-02-16
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Expires: 1982-07-12
Abstract
No abstract record available.
Inventors
- 👤 Brandt Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:27
CPC Classifications
H; H01; H01R; H01R13/00; H01R13/46; H01R13/52; H01R13/523; E; E21; E21B; E21B17/00; E21B17/02; E21B17/028; E21B17/0285; G; G01; G01V; G01V3/00; G01V3/18; G01V3/34; Y; Y10; Y10S; Y10S336/00; Y10S336/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
IN A METHOD OF ELECTRICALLY TRANSMITTING A SIGNAL ON A PAIR OF CONNECTED CONDUCTORS LOCATED IN A WELL CONTAINING AN ELECTROLYTIC DRILLING MUD, THE IMPROVEMENT COMPRISING ESTABLISHING A DIRECT CURRENT POTENTIAL ON THE CONDUCTORS TO CAUSE ELECTROLYSIS OF THE DRILLING MUD ADJACENT THE CONNECTIONS OF SAID CONDUCTORS AND THE FORMATION OF A GASEOUS FILM THEREBETWEEN, AND MAINTAINING SAID DIRECT CURRENT POTENTIAL ON THE CONDUCTORS WHILE ESTABLISHING AN ALTERNATING CURRENT POTENTIAL ON SAID CONDUCTORS FOR THE TRANSMISSION OF A SIGNAL THEREON.
Claim 2
Dependent Claim
80 words
IN A METHOD OF ELECTRICALLY TRANSMITTING A SIGNAL ON A PAIR OF CONNECTED CONDUCTORS LOCATED IN A WELL CONTAINING AN ELECTROLYTIC DRILLING MUD, THE IMPROVEMENT COMPRISING ESTABLISHING A DIRECT CURRENT POTENTIAL ON THE CONDUCTORS TO CAUSE ELECTROLYSIS OF THE DRILLING MUD ADJACENT THE CONNECTIONS OF SAID CONDUCTORS AND THE FORMATION OF A GASEOUS FILM THEREBETWEEN, AND MAINTAINING SAID DIRECT CURRENT POTENTIAL ON THE CONDUCTORS WHILE ESTABLISHING AN ALTERNATING CURRENT POTENTIAL ON SAID CONDUCTORS FOR THE TRANSMISSION OF A SIGNAL THEREON.
References Cited (Backward Citations)
US2000716A
Cited
US2096359A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-02-16 | 1968-08-17 | 1969-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-16 | 1972-08-17 | 1973-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-16 | 1976-08-17 | 1977-02-16 | $7700.00 | Window Closed / Lapsed |