Patent US2737804A successfully refreshed from Google Patents.
US2737804A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Relative permeability measurements
Assignee: Texaco Inc
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Filing: 1951-06-13
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Granted: 1956-03-13
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Expires: 1971-06-13
Abstract
No abstract record available.
Inventors
- 👤 Herzog Gerhard
- 👤 Brink Karl C Ten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:48
CPC Classifications
G; G01; G01N; G01N33/00; G01N33/24; G01N33/241
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
THE METHOD FOR DETERMINING PERMEABILITY OF A POROUS SOLID MATERIAL TO A FLOWING PHASE IN A HETEROGENEOUS FLUID SYSTEM INVOLVING AT LEAST ONE, DISCRETE ACCOMPANYING PHASE WHICH COMPRISES INTRODUCING AN AMOUNT EQUAL TO A PREDETERMINED PORTION OF SAID PORE SPACE OF SAID ACCOMPANYING PHASE AS A FLUID INTO THE INTERNAL PORE SPACE OF A DRY, CLEAN SAMPLE OF SAID POROUS SOLID MATERIAL, RENDERING SAID ACCOMPANYING PHASE IMMOBILE IN SITU, SETTING UP A SUBSTANTIAL RATE OF FLOW OF SAID FLOWING PHASE THROUGH THE RESIDUAL PORE SPACE OF SAID POROUS MATERIAL AND DETERMINING THE EFFECTIVE PERMEABILITY TO SAID FLOWING PHASE.
Claim 2
Independent Claim
98 words
THE METHOD FOR DETERMINING PERMEABILITY OF A POROUS SOLID MATERIAL TO A FLOWING PHASE IN A HETEROGENEOUS FLUID SYSTEM INVOLVING AT LEAST ONE, DISCRETE ACCOMPANYING PHASE WHICH COMPRISES INTRODUCING AN AMOUNT EQUAL TO A PREDETERMINED PORTION OF SAID PORE SPACE OF SAID ACCOMPANYING PHASE AS A FLUID INTO THE INTERNAL PORE SPACE OF A DRY, CLEAN SAMPLE OF SAID POROUS SOLID MATERIAL, RENDERING SAID ACCOMPANYING PHASE IMMOBILE IN SITU, SETTING UP A SUBSTANTIAL RATE OF FLOW OF SAID FLOWING PHASE THROUGH THE RESIDUAL PORE SPACE OF SAID POROUS MATERIAL AND DETERMINING THE EFFECTIVE PERMEABILITY TO SAID FLOWING PHASE.
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) | 1959-03-13 | 1959-09-12 | 1960-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-13 | 1963-09-12 | 1964-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-13 | 1967-09-12 | 1968-03-13 | $7700.00 | Window Closed / Lapsed |