Patent US3083158A successfully refreshed from Google Patents.
US3083158A
Expired / Lapsed
US
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Anti-sludging agents
Assignee: Baker Petrolite LLC
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Filing: 1959-08-20
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Granted: 1963-03-26
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Expires: 1979-08-20
Abstract
No abstract record available.
Inventors
- 👤 Wendell G Markham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 10:12
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/52; C09K8/528; Y; Y10; Y10S; Y10S507/00; Y10S507/933; Y10S507/934
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A COMPOSITION OF MATTER USEFUL IN PREVENTING FORMATION OF ACID SLUDGE DURING ACIDIZATION OF AN OIL-BEARING STRATA WHICH CONSISTS ESSENTIALLY, IN THE ACID MEDIUM, OF AN EMULSION OF (A) AN ANTI-SLUDGING AMOUNT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF I. AN ALIPHATIC ALCOHOL OF THE FORMULA ROH WHEREIN R IS AN ALKYL GROUP HAVING AT LEAST 6 CARBON ATOMS, II. AN ALIPHATIC ALCOHOL OF THE FORMULA ROH WHEREIN R IS AN ALKENYL GROUP HAVING AT LEAST 6 CARBON ATOMS, III. AN ALIPHATIC ALCOHOL OF THE FORMULA ROH WHEREIN R IS AN ALKYNYL GROUP HAVING AT LEAST 6 CARBON ATOMS, IV. A CYCLOALIPHATIC ALCOHOL OF THE FORMULA
Claim 2
Dependent Claim
108 words
A COMPOSITION OF MATTER USEFUL IN PREVENTING FORMATION OF ACID SLUDGE DURING ACIDIZATION OF AN OIL-BEARING STRATA WHICH CONSISTS ESSENTIALLY, IN THE ACID MEDIUM, OF AN EMULSION OF (A) AN ANTI-SLUDGING AMOUNT OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF I. AN ALIPHATIC ALCOHOL OF THE FORMULA ROH WHEREIN R IS AN ALKYL GROUP HAVING AT LEAST 6 CARBON ATOMS, II. AN ALIPHATIC ALCOHOL OF THE FORMULA ROH WHEREIN R IS AN ALKENYL GROUP HAVING AT LEAST 6 CARBON ATOMS, III. AN ALIPHATIC ALCOHOL OF THE FORMULA ROH WHEREIN R IS AN ALKYNYL GROUP HAVING AT LEAST 6 CARBON ATOMS, IV. A CYCLOALIPHATIC ALCOHOL OF THE FORMULA
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-03-25 | 1966-09-24 | 1967-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-25 | 1970-09-24 | 1971-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-25 | 1974-09-24 | 1975-03-26 | $7700.00 | Window Closed / Lapsed |