US2533303A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Prevention of rust
Assignee: Sinclair Refining Co
•
Filing: 1947-10-09
•
Granted: 1950-12-12
•
Expires: 1967-10-09
Abstract
No abstract record available.
Inventors
- 👤 Franklin M Watkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-22 17:53
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/24; C10L1/2431; C10L1/2437
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
METHOD RETARDING INTERNAL CORROSION OF PIPE LINES CONTAINING IRON WHICH COMPRISES INCORPORATING IN THE LIGHT PETROLEUM DISTILLATE CHARGED TO THE PIPE LINE FROM 1 TO 100 PARTS PER MILLION OF A MATERIAL FROM THE GROUP CONSISTING OF PETROLEUM MAHOGANY SUFONIC ACIDS AND PETROLEUM MAHOGANY SULFONATES.
Claim 2
Dependent Claim
45 words
METHOD RETARDING INTERNAL CORROSION OF PIPE LINES CONTAINING IRON WHICH COMPRISES INCORPORATING IN THE LIGHT PETROLEUM DISTILLATE CHARGED TO THE PIPE LINE FROM 1 TO 100 PARTS PER MILLION OF A MATERIAL FROM THE GROUP CONSISTING OF PETROLEUM MAHOGANY SUFONIC ACIDS AND PETROLEUM MAHOGANY SULFONATES.
References Cited (Backward Citations)
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US1630101A
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US2125305A
Cited
US2333206A
Cited
US2449025A
Cited
US2413311A
Cited
US2453690A
Cited
US2412634A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-12-11 | 1954-06-12 | 1954-12-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-12-11 | 1958-06-12 | 1958-12-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-12-11 | 1962-06-12 | 1962-12-12 | $7700.00 | Window Closed / Lapsed |