US3294705A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refinery corrosion inhibitor
Assignee: Chevron USA Inc
•
Filing: 1965-12-16
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Granted: 1966-12-27
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Expires: 1985-12-16
Abstract
No abstract record available.
Inventors
- 👤 George J Kautsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:27
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/222; C10L1/224; C08; C08G; C08G79/00; C08G79/02; C10G; C10G7/00; C10G7/10; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14; C23F11/145
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A COMPOSITION FOR INHIBITING CORROSION OCCURRING IN PETROLEUM REFINERY FRACIONATION EQUIPMENT, SAID COMPOSITION COMPRISING A MIXTURE OF (1) AN AMINOOLEAMIDE OF THE GENERAL FORMULA: R-CO-N(-R'')-A-NH-R'' IN WHICH R-COIS THE ACYL RESIDUE OF OLEIC ACID, A IS AN ALKYLENE RADICAL. OF 2 TO 4 CARBON ATOMS, AND, IN THE TWO OCCURRENCES OF R'', ONE IS HYDROGEN AND THE OTHER IS SELECTED FROM THE GROUP CONSISTING OF AMINOETHYL AND HYDROXYETHYL RADICALS, AND (2) AN OLEATE SALT OF SAID AMINOOLEAMIDE, THE MOL RATIO OF SAID AMIDE TO SAID OLEATE BEING IN THE RANGE FROM ABOUT 4:1 TO ABOUT 1:4.
Claim 2
Dependent Claim
96 words
A COMPOSITION FOR INHIBITING CORROSION OCCURRING IN PETROLEUM REFINERY FRACIONATION EQUIPMENT, SAID COMPOSITION COMPRISING A MIXTURE OF (1) AN AMINOOLEAMIDE OF THE GENERAL FORMULA: R-CO-N(-R'')-A-NH-R'' IN WHICH R-COIS THE ACYL RESIDUE OF OLEIC ACID, A IS AN ALKYLENE RADICAL. OF 2 TO 4 CARBON ATOMS, AND, IN THE TWO OCCURRENCES OF R'', ONE IS HYDROGEN AND THE OTHER IS SELECTED FROM THE GROUP CONSISTING OF AMINOETHYL AND HYDROXYETHYL RADICALS, AND (2) AN OLEATE SALT OF SAID AMINOOLEAMIDE, THE MOL RATIO OF SAID AMIDE TO SAID OLEATE BEING IN THE RANGE FROM ABOUT 4:1 TO ABOUT 1:4.
References Cited (Backward Citations)
US2598213A
Cited
US2956020A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |