US2802172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Core sample resistivity cell
Assignee: ExxonMobil Oil Corp
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Filing: 1953-07-16
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Granted: 1957-08-06
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Expires: 1973-07-16
Abstract
No abstract record available.
Inventors
- 👤 William F Mueller
- 👤 Carl F Rust
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:26
CPC Classifications
G; G01; G01R; G01R27/00; G01R27/02; G01R27/14; G01N; G01N27/00; G01N27/02; G01N27/04; G01N27/041
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A CORE SAMPLE CELL FOR USE IN THE MEASUREMENT OF THE ELECTRICAL RESISTIVITY OF CORE SAMPLES COMPRISING IN COMBINATION AN ENCLOSED BOX HAVING SIDE WALLS, A BOTTOM WALL, AND A COVER, A PAIR OF SPRING-LOADED ELECTRODES ENTERING SAID BOX THROUGH TWO OPPOSITE SIDE WALLS AND PROVIDED WITH CORE SAMPLE CONTACTING PLATES, A PAIR OF ELECTRODE HOLDERS MOUNTED WITHIN SAID BOX AND SHAPED TO FORM A CHANNEL ADAPTED TO RECEIVE A CORE SAMPLE, AND A PLURALITY OF SPRING-LOADED ELECTRODES CARRIED BY SAID ELECTRODE HOLDERS ADAPTED TO CONTACT A CORE SAMPLE RECEIVED WITHIN SAID CHANNEL AT THE LONGITUDINAL SURFACE OF SAID CORE SAMPLE.
Claim 2
Dependent Claim
101 words
A CORE SAMPLE CELL FOR USE IN THE MEASUREMENT OF THE ELECTRICAL RESISTIVITY OF CORE SAMPLES COMPRISING IN COMBINATION AN ENCLOSED BOX HAVING SIDE WALLS, A BOTTOM WALL, AND A COVER, A PAIR OF SPRING-LOADED ELECTRODES ENTERING SAID BOX THROUGH TWO OPPOSITE SIDE WALLS AND PROVIDED WITH CORE SAMPLE CONTACTING PLATES, A PAIR OF ELECTRODE HOLDERS MOUNTED WITHIN SAID BOX AND SHAPED TO FORM A CHANNEL ADAPTED TO RECEIVE A CORE SAMPLE, AND A PLURALITY OF SPRING-LOADED ELECTRODES CARRIED BY SAID ELECTRODE HOLDERS ADAPTED TO CONTACT A CORE SAMPLE RECEIVED WITHIN SAID CHANNEL AT THE LONGITUDINAL SURFACE OF SAID CORE SAMPLE.
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) | 1960-08-05 | 1961-02-04 | 1961-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-08-05 | 1965-02-04 | 1965-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-08-05 | 1969-02-04 | 1969-08-06 | $7700.00 | Window Closed / Lapsed |