US2845393A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion-inhibiting composition containing cetyl dimethyl amine petroleum sulfonates and method
Assignee: Phillips Petroleum Co
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Filing: 1956-07-20
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Granted: 1958-07-29
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Expires: 1976-07-20
Abstract
No abstract record available.
Inventors
- 👤 Charles W Varvel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:27
CPC Classifications
C; C10; C10M; C10M135/00; C10M135/08; C10M135/10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/24; C10L1/2431; C10L1/2437; C10M2219/00; C10M2219/04; C10M2219/044; C10N; C10N2030/00; C10N2030/12; Y; Y10; Y10S; Y10S507/00; Y10S507/939
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A CORROSION-INHIBITING COMPOSITION COMPRISING A PETROLEUM LIQUID CONTAINING FROM 10 TO 300 P.P.M. OF CETYL DIMETHYLAMINE PETROLEUM SULFONATE DERIVED FROM AN OIL SOLUBLE PETROLEUM SULFONATE.
Claim 2
Dependent Claim
25 words
A CORROSION-INHIBITING COMPOSITION COMPRISING A PETROLEUM LIQUID CONTAINING FROM 10 TO 300 P.P.M. OF CETYL DIMETHYLAMINE PETROLEUM SULFONATE DERIVED FROM AN OIL SOLUBLE PETROLEUM SULFONATE.
References Cited (Backward Citations)
US2756211A
Cited
US2270681A
Cited
US2533303A
Cited
US2533304A
Cited
US2582733A
Cited
US2745809A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-07-28 | 1962-01-27 | 1962-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-07-28 | 1966-01-27 | 1966-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-07-28 | 1970-01-27 | 1970-07-29 | $7700.00 | Window Closed / Lapsed |