Patent US2889277A successfully refreshed from Google Patents.
US2889277A
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Method of inhibiting corrosion of metals
Assignee: Cities Service Research and Development Co
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Filing: 1955-11-16
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Granted: 1959-06-02
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Expires: 1975-11-16
Abstract
No abstract record available.
Inventors
- 👤 William B Hughes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:13
CPC Classifications
C; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/14; C23F11/149; Y; Y10; Y10S; Y10S507/00; Y10S507/939
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
THE PROCESS OF PREVENTING CORROSION OF FERROUS METALS WHEN EXPOSED TO CONTACT WITH ACIDIC CORROSIVE FLUIDS CONTAINING VARYING AMOUNTS OF HYDROGEN SULFIDE AND CARBON DIOXIDE WHICH COMPRISES INTRODUCING INTO THE CORROSIVE FLUIDS A SMALL AMOUNT, SUFFICIENT TO INHIHIT DENSING THREE MOLS OF AN ALKYLANILINE, THE ALKYL GROUP OF THE ANILINE BEING SUBSTITUTED ON THE ANILINE NUCLEUS AND HAVING FROM 1 TO ABOUT 15 CARBONS ATOMS, WITH AN AND HAVING FROM 1 TO ABOUT 15 CARBON ATOMS, WITH AN EQUIMOLAR AMOUNT OF AN ALDEHYDE SELECTED FROM THE GROUP CONSISTING OF FORMALDEHYDE AND PARAFORMALDEHYDE BY HEATING THE ANILINE AND ALDEHYDE COMPOUNDS TOGETHER IN THE PRESENCE OF AZEOTROPE-FORMING SOLVENT, DISTILLING WATER FROM THE INTERMEDIATE TRRIAZINE REACTION PRODUCT AND REACTING THE INTERMEDIATE TRIAZINE REACTION PRODUCT WITH FROM ONE TO THREE MOLS OF AN ACID SELECTED FROM THE GROUP CONSISTING OF OLEIC, STEARIC, RICINOLEIC, AND GREEN ACIDS TO FORM AN ALKYL SUBSTITUTED TRIAZINE SALT.
Claim 2
Dependent Claim
149 words
THE PROCESS OF PREVENTING CORROSION OF FERROUS METALS WHEN EXPOSED TO CONTACT WITH ACIDIC CORROSIVE FLUIDS CONTAINING VARYING AMOUNTS OF HYDROGEN SULFIDE AND CARBON DIOXIDE WHICH COMPRISES INTRODUCING INTO THE CORROSIVE FLUIDS A SMALL AMOUNT, SUFFICIENT TO INHIHIT DENSING THREE MOLS OF AN ALKYLANILINE, THE ALKYL GROUP OF THE ANILINE BEING SUBSTITUTED ON THE ANILINE NUCLEUS AND HAVING FROM 1 TO ABOUT 15 CARBONS ATOMS, WITH AN AND HAVING FROM 1 TO ABOUT 15 CARBON ATOMS, WITH AN EQUIMOLAR AMOUNT OF AN ALDEHYDE SELECTED FROM THE GROUP CONSISTING OF FORMALDEHYDE AND PARAFORMALDEHYDE BY HEATING THE ANILINE AND ALDEHYDE COMPOUNDS TOGETHER IN THE PRESENCE OF AZEOTROPE-FORMING SOLVENT, DISTILLING WATER FROM THE INTERMEDIATE TRRIAZINE REACTION PRODUCT AND REACTING THE INTERMEDIATE TRIAZINE REACTION PRODUCT WITH FROM ONE TO THREE MOLS OF AN ACID SELECTED FROM THE GROUP CONSISTING OF OLEIC, STEARIC, RICINOLEIC, AND GREEN ACIDS TO FORM AN ALKYL SUBSTITUTED TRIAZINE SALT.
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) | 1962-06-01 | 1962-12-01 | 1963-06-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-06-01 | 1966-12-01 | 1967-06-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-06-01 | 1970-12-01 | 1971-06-02 | $7700.00 | Window Closed / Lapsed |