US2765851A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for improving oil recovery processes
Assignee: Pure Oil Co
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Filing: 1953-09-23
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Granted: 1956-10-09
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Expires: 1973-09-23
Abstract
No abstract record available.
Inventors
- 👤 Donald C Bond
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:08
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/60; C09K8/602; C09K8/58; C09K8/584; Y; Y10; Y10S; Y10S507/00; Y10S507/935
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
IN A PROCESS FOR TREATING A SILICEOUS, GEOLOGICAL, OIL PRODUCING FORMATION TO INCREASE THE EFFECTIVE PERMEABILITY THEREOF, THE STEP WHICH COMPRISES INTRODUCING INTO THE FORMATION A FLUID SOLUTION OF AT LEAST ONE PERFLUROCARBON COMPOUND SELECTED FROM THE GROUP CONSISTING OF PERFLUORO ORGANIC ACIDS AND ACID DERIVATIVES, PERFLUORO ALCOHOLS, PERFLUORO ETHERS, PERFLUORO AMINES, AND PERFLUORO ALKOXY COMPOUNDS IN AN AMOUNT SUFFICIENT TO COAT THE INTERSTITIAL SURFACES OF SAID FORMATION WITH AN ORIENTED, CLOSED-PACKED MONOLAYER OF SAID ORGANIC PERFLUORINE COMPOUND.
Claim 2
Dependent Claim
78 words
IN A PROCESS FOR TREATING A SILICEOUS, GEOLOGICAL, OIL PRODUCING FORMATION TO INCREASE THE EFFECTIVE PERMEABILITY THEREOF, THE STEP WHICH COMPRISES INTRODUCING INTO THE FORMATION A FLUID SOLUTION OF AT LEAST ONE PERFLUROCARBON COMPOUND SELECTED FROM THE GROUP CONSISTING OF PERFLUORO ORGANIC ACIDS AND ACID DERIVATIVES, PERFLUORO ALCOHOLS, PERFLUORO ETHERS, PERFLUORO AMINES, AND PERFLUORO ALKOXY COMPOUNDS IN AN AMOUNT SUFFICIENT TO COAT THE INTERSTITIAL SURFACES OF SAID FORMATION WITH AN ORIENTED, CLOSED-PACKED MONOLAYER OF SAID ORGANIC PERFLUORINE COMPOUND.
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) | 1959-10-09 | 1960-04-09 | 1960-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-09 | 1964-04-09 | 1964-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-09 | 1968-04-09 | 1968-10-09 | $7700.00 | Window Closed / Lapsed |