US2888401A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prevention of rust and corrosion
Assignee: Baker Petrolite LLC
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Filing: 1957-02-06
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Granted: 1959-05-26
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Expires: 1977-02-06
Abstract
No abstract record available.
Inventors
- 👤 William B Hughes
- 👤 Verner L Stromberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:01
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/12; C23F11/128; Y; Y10; Y10S; Y10S507/00; Y10S507/939
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
177 words
A METHOD OF INHIBITING CORROSION OF CORRODIBLE FERROUS METALS EMPLOYED IN THE RECOVERY, TRANSPORTATION AND REFINING OF PETROLEUM HYDROCARBON FLUIDS; SAID HYDROCARBON FLUIDS CONTAINING WATER AND A MEMBER OF THE GROUP OF CORROSIVE MATERIALS CONSISTING OF HYDROGEN SULFIDE, CARBON DIOXIDE, ORGANIC ACIDS CONTAINING 2 TO 4 CARBON ATOMS PER MOLECULE, COMBINATION OF THESE MATERIALS WITH OXYGEN, AND COMBINATIONS OF SAID MATERIALS WITH EACH OTHER AND OXYGEN; SAID METHOD COMPRISING ADDING TO SAID FLUIDS AT LEAST 5 PARTS PER MILLION OF A PAETIAL ESTER OF A POLYMERIZED UNSATURATED HIGHER FATTY ACIDS, OBTAINED BY POLYMERIZATION NOT GREATER THAN THE TRIMERIC STAGE AND FURTHER CHARACTERIZED BY THE FACT THAT THE PRECURSORY UNSATURATED FATTY ACID CONTAINS FROM 6 TO 22 CARBON ATOMS AND HAS FROM 2 TO 3 ETHYLENIC LINKAGES PER MOLECULE; SAID PARTIAL ESTER BEIN CHARACTERIZED BY THE FACT THAT AT LEAST ONE CARBOXYLIC HYDROGEN ATOM IS PRESENT AND AT LEAST ONE CARBOXYLIC HYDROGEN ATOMS IS REPLACED BY THE ALCOHOLIC RESIDUE OF A MONOHYDRIC ALCOHOLS SELECTED FROM THE CLASS OF ALIPHATIC AND CYCLOALIPHATIC ALCOHOLS HAVING 6 TO 26 CARBON ATOMS.
Claim 2
Independent Claim
177 words
A METHOD OF INHIBITING CORROSION OF CORRODIBLE FERROUS METALS EMPLOYED IN THE RECOVERY, TRANSPORTATION AND REFINING OF PETROLEUM HYDROCARBON FLUIDS; SAID HYDROCARBON FLUIDS CONTAINING WATER AND A MEMBER OF THE GROUP OF CORROSIVE MATERIALS CONSISTING OF HYDROGEN SULFIDE, CARBON DIOXIDE, ORGANIC ACIDS CONTAINING 2 TO 4 CARBON ATOMS PER MOLECULE, COMBINATION OF THESE MATERIALS WITH OXYGEN, AND COMBINATIONS OF SAID MATERIALS WITH EACH OTHER AND OXYGEN; SAID METHOD COMPRISING ADDING TO SAID FLUIDS AT LEAST 5 PARTS PER MILLION OF A PAETIAL ESTER OF A POLYMERIZED UNSATURATED HIGHER FATTY ACIDS, OBTAINED BY POLYMERIZATION NOT GREATER THAN THE TRIMERIC STAGE AND FURTHER CHARACTERIZED BY THE FACT THAT THE PRECURSORY UNSATURATED FATTY ACID CONTAINS FROM 6 TO 22 CARBON ATOMS AND HAS FROM 2 TO 3 ETHYLENIC LINKAGES PER MOLECULE; SAID PARTIAL ESTER BEIN CHARACTERIZED BY THE FACT THAT AT LEAST ONE CARBOXYLIC HYDROGEN ATOM IS PRESENT AND AT LEAST ONE CARBOXYLIC HYDROGEN ATOMS IS REPLACED BY THE ALCOHOLIC RESIDUE OF A MONOHYDRIC ALCOHOLS SELECTED FROM THE CLASS OF ALIPHATIC AND CYCLOALIPHATIC ALCOHOLS HAVING 6 TO 26 CARBON ATOMS.
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) | 1962-05-25 | 1962-11-24 | 1963-05-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-05-25 | 1966-11-24 | 1967-05-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-05-25 | 1970-11-24 | 1971-05-26 | $7700.00 | Window Closed / Lapsed |