Patent US2533302A successfully refreshed from Google Patents.
US2533302A
Expired / Lapsed
US
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Prevention of rust
Assignee: Sinclair Refining Co
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Filing: 1947-09-26
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Granted: 1950-12-12
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Expires: 1967-09-26
Abstract
No abstract record available.
Inventors
- 👤 Franklin M Watkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:01
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/24; C10L1/2431; C10L1/2437; C23; C23F; C23F11/00; C23F11/08; C23F11/10; C23F11/16; C23F11/163
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
45 words
THE METHOD OF INHIBITING THE RUSTING OF IRON AND STEEL SURFACES WHICH COMPRISING MAINTAINING A SUITABLY CONCENTRATED PETROLEUM OIL DISTILLATE SOLUTIONOF P-AMINOPHENOL MAHOGANY SULFONATE IN CONTACT WITH SUCH SURFACES, SAID PETROLEUM OIL DISTILLATE BEING SELECTED FROM THE GROUP CONSISTING OF GASOLINE, KEROSENE AND FUEL OIL.
Claim 2
Independent Claim
45 words
THE METHOD OF INHIBITING THE RUSTING OF IRON AND STEEL SURFACES WHICH COMPRISING MAINTAINING A SUITABLY CONCENTRATED PETROLEUM OIL DISTILLATE SOLUTIONOF P-AMINOPHENOL MAHOGANY SULFONATE IN CONTACT WITH SUCH SURFACES, SAID PETROLEUM OIL DISTILLATE BEING SELECTED FROM THE GROUP CONSISTING OF GASOLINE, KEROSENE AND FUEL OIL.
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) | 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 |