Patent US2672444A successfully refreshed from Google Patents.
US2672444A
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US
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Rust preventive compositions
Assignee: Standard Oil Development Co
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Filing: 1948-06-05
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Granted: 1954-03-16
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Expires: 1968-06-05
Abstract
No abstract record available.
Inventors
- 👤 Jones I Wasson
- 👤 Douglas L Bonham
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:47
CPC Classifications
C; C10; C10M; C10M135/00; C10M135/02; C10M135/06; C10M129/00; C10M129/02; C10M129/68; C10M129/76; C10M141/00; C10M141/08; C10M145/00; C10M145/18; C10M145/22; C10M159/00; C10M159/12; C10M159/123; C10M2205/00; C10M2205/18; C10M2207/00; C10M2207/10; C10M2207/12; C10M2207/125; C10M2207/129; C10M2207/28; C10M2207/287; C10M2207/289; C10M2207/40; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/10; C10M2209/103; C10M2209/105; C10M2211/00; C10M2211/04; C10M2211/044; C10M2213/00; C10M2213/04; C10M2213/06; C10M2219/00; C10M2219/02; C10M2219/024; C10M2219/04; C10M2219/044; C10M2221/00; C10M2221/04; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/045; C10M2223/047; C10M2223/12; C10M2225/00; C10M2225/02; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2010/08; C10N2030/00; C10N2030/12; C10N2040/00; C10N2040/14; C10N2040/16; C10N2040/17; C10N2050/00; C10N2050/10; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
66 words
A COMPOSITION CONSISTING ESSENTIALY OF HYDROCARBON OIL BASE LUBRICANT CONTAINING 0.1 TO 10% BY WEIGHT OF MONO-OLEATE ESTER OF POLYGLYCEROL WHICH IS PREDOMINANTLY DIGLYCEROL, SAID POLYGLYCEROL BEING PREPARED BY HEATING GLYCERIN TO A TEMPERATURE WITHIN THE RANGE OF ABOUT 225* TO 250* F. FOR A PERIOD OF TIME SUFFICIENT TO INCREASE ITS VISCOSITY SUBSTANTIALLY, 0.1 TO 10% OF METAL SULFONATE, AND 0 TO 10% OF DEGRAS.
Claim 2
Dependent Claim
66 words
A COMPOSITION CONSISTING ESSENTIALY OF HYDROCARBON OIL BASE LUBRICANT CONTAINING 0.1 TO 10% BY WEIGHT OF MONO-OLEATE ESTER OF POLYGLYCEROL WHICH IS PREDOMINANTLY DIGLYCEROL, SAID POLYGLYCEROL BEING PREPARED BY HEATING GLYCERIN TO A TEMPERATURE WITHIN THE RANGE OF ABOUT 225* TO 250* F. FOR A PERIOD OF TIME SUFFICIENT TO INCREASE ITS VISCOSITY SUBSTANTIALLY, 0.1 TO 10% OF METAL SULFONATE, AND 0 TO 10% OF DEGRAS.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-03-15 | 1957-09-14 | 1958-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-03-15 | 1961-09-14 | 1962-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-03-15 | 1965-09-14 | 1966-03-16 | $7700.00 | Window Closed / Lapsed |