US3140599A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for determining permeability of earth formations
Assignee: Pure Oil Co
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Filing: 1961-12-07
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Granted: 1964-07-14
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Expires: 1981-12-07
Abstract
No abstract record available.
Inventors
- 👤 Habib S Rahme
- 👤 Lynn E Ellison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 11:40
CPC Classifications
G; G01; G01N; G01N15/00; G01N15/08; G01N15/082; G01N15/0826
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
102 words
AN APPARATUS FOR DETERMINING THE PERMEABILITY OF A CYLINDRICAL SPECIMEN COMPRISING, IN COMBINATION, A CONTAINER HAVING FIXED, RIGID WALLS AND A FLUID-TIGHT REMOVABLE LID, MEANS COOPERATING WITH SAID FIXED CONTAINER WALLS AND LID FOR ENGAGING AND SEALING THE FLAT ENDS OF A CYLINDRICAL SPECIMEN, WHEREBY SAID SPECIMEN IS AUTOMATICALLY SUPPORTED WITHIN SAID CONTAINER IN A FIXED POSITION WITH THE FLAT ENDS OF SAID SPECIMEN SEALED WHEN SAID LID IS SECURED TO SAID CONTAINER, VALVE-CONTROLLED CONDUIT MEANS CONNECTING SAID CONTAINER WITH A FIRST CHAMBER HAVING FLUIDTIGHT WALLS, A SECOND CHAMBER HAVING FLUID-TIGHT WALLS AND A MOVABLE COMMON DIVIDING WALL WITH SAID FIRST CHAM-
Claim 2
Independent Claim
102 words
AN APPARATUS FOR DETERMINING THE PERMEABILITY OF A CYLINDRICAL SPECIMEN COMPRISING, IN COMBINATION, A CONTAINER HAVING FIXED, RIGID WALLS AND A FLUID-TIGHT REMOVABLE LID, MEANS COOPERATING WITH SAID FIXED CONTAINER WALLS AND LID FOR ENGAGING AND SEALING THE FLAT ENDS OF A CYLINDRICAL SPECIMEN, WHEREBY SAID SPECIMEN IS AUTOMATICALLY SUPPORTED WITHIN SAID CONTAINER IN A FIXED POSITION WITH THE FLAT ENDS OF SAID SPECIMEN SEALED WHEN SAID LID IS SECURED TO SAID CONTAINER, VALVE-CONTROLLED CONDUIT MEANS CONNECTING SAID CONTAINER WITH A FIRST CHAMBER HAVING FLUIDTIGHT WALLS, A SECOND CHAMBER HAVING FLUID-TIGHT WALLS AND A MOVABLE COMMON DIVIDING WALL WITH SAID FIRST CHAM-
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) | 1967-07-14 | 1968-01-13 | 1968-07-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-07-14 | 1972-01-13 | 1972-07-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-07-14 | 1976-01-13 | 1976-07-14 | $7700.00 | Window Closed / Lapsed |