US2873253A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of inhibiting the deposition of formally solid paraffins from a petroliferousfluid containing same
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1957-10-22
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Granted: 1959-02-10
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Expires: 1977-10-22
Abstract
No abstract record available.
Inventors
- 👤 Roy D Stanphill
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:59
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C09; C09K; C09K8/00; C09K8/52; C09K8/524; C10M; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; Y; Y10; Y10S; Y10S507/00; Y10S507/927; Y10S507/929; Y10S507/931
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
A METHOD FOR INHIBITING THE DEPSITION OF NORMALLY SOLID PARAFFINS FROM A PETROLIFEROUS FLUID CONTAINING THE SAME WHICH COMPRISES INCORPORATING A FATTY ACID DERIVATIVE INTO SAID PETROLIFEROUS FLUID IN AN AMOUNT SUFFICIENT TO INHIBIT DEPOSITION OF A SUBSTANTIAL PORTION OF SAID NORMALLY SOLID PARAFFINS, SAID DERIVATIVE HAVING BEEN PREPARED BY REACTING A WATER INSOLUBLE FATTY ACID WITH AN AMINE SELECTED FROM THE GROUP, CONSISTING OF PRIMARY AND SECONDARY AMINES HAVING ATTACHED, TO THE NITROGEN OF THE AMINE, ORGANIC RADICALS CONTAINING NOT MORE THAN ABOUT 2 CARBON ATOMS PER RADICL, AT A TEMPERATURE OF NOT MORE THAN ABOUT 200*F., SAID AMINE BEING REACTED WITH SAID FATTY ACID IN AN AMOUNT SUFFICIENT TO PROVIDE A REACTION PRODUCT FORMING A COLORLESS 5 VOLUME PERCENT SOLUTION IN (A) MIXTURES OF AT LEAST 55 VOLUME PERCENT OF ISOPROPYL ALCOLHOL WITH WATER AND (B) MIXTURES OF AT LEAST 55 VOLUME PERCENT OF TOLUENE WITH ISO-OCTANE.
Claim 2
Independent Claim
149 words
A METHOD FOR INHIBITING THE DEPSITION OF NORMALLY SOLID PARAFFINS FROM A PETROLIFEROUS FLUID CONTAINING THE SAME WHICH COMPRISES INCORPORATING A FATTY ACID DERIVATIVE INTO SAID PETROLIFEROUS FLUID IN AN AMOUNT SUFFICIENT TO INHIBIT DEPOSITION OF A SUBSTANTIAL PORTION OF SAID NORMALLY SOLID PARAFFINS, SAID DERIVATIVE HAVING BEEN PREPARED BY REACTING A WATER INSOLUBLE FATTY ACID WITH AN AMINE SELECTED FROM THE GROUP, CONSISTING OF PRIMARY AND SECONDARY AMINES HAVING ATTACHED, TO THE NITROGEN OF THE AMINE, ORGANIC RADICALS CONTAINING NOT MORE THAN ABOUT 2 CARBON ATOMS PER RADICL, AT A TEMPERATURE OF NOT MORE THAN ABOUT 200*F., SAID AMINE BEING REACTED WITH SAID FATTY ACID IN AN AMOUNT SUFFICIENT TO PROVIDE A REACTION PRODUCT FORMING A COLORLESS 5 VOLUME PERCENT SOLUTION IN (A) MIXTURES OF AT LEAST 55 VOLUME PERCENT OF ISOPROPYL ALCOLHOL WITH WATER AND (B) MIXTURES OF AT LEAST 55 VOLUME PERCENT OF TOLUENE WITH ISO-OCTANE.
References Cited (Backward Citations)
US2470831A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-02-09 | 1962-08-11 | 1963-02-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-02-09 | 1966-08-11 | 1967-02-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-02-09 | 1970-08-11 | 1971-02-10 | $7700.00 | Window Closed / Lapsed |