US2493483A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Marine engine lubricant
Assignee: Shell Development Co
•
Filing: 1948-04-26
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Granted: 1950-01-03
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Expires: 1968-04-26
Abstract
No abstract record available.
Inventors
- 👤 Charles E Francis
- 👤 Robert C Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 00:27
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2205/00; C10M2205/16; C10M2207/00; C10M2207/02; C10M2207/021; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/122; C10M2207/125; C10M2207/128; C10M2207/129; C10M2207/14; C10M2207/141; C10M2207/142; C10M2207/16; C10M2207/18; C10M2207/20; C10M2207/28; C10M2207/282; C10M2207/287; C10M2207/289; C10M2207/34; C10M2207/40; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/082; C10M2209/10; C10M2209/103; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/22; C10M2215/223; C10M2215/224; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/042; C10M2219/044; C10M2219/08; C10M2219/082; C10M2219/09; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/10; C10M2229/00; C10M2229/04; C10M2229/041; C10N; C10N2030/00; C10N2030/12; C10N2040/00; C10N2040/135; C10N2040/20; C10N2040/22; C10N2040/24; C10N2040/241; C10N2040/242; C10N2040/243; C10N2040/244; C10N2040/245; C10N2040/246; C10N2040/247; C10N2060/00; C10N2060/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
127 words
A MARINE ENGINE LUBRICANT CAPABLE OF FORMING STABLE EMULSIONS WHEN IN CONTACT WITH AN AQUEOUS MEDIUM COMPRISING FROM 0.05 TO 1% OF A GLYOXALIDINE SELECTED FROM THE GROUP CONSISTING OF HYDROXY ALKYL- AND AMINO ALKYL-SUBSTITUTED GLYOXALIDINES; FROM 0.01 TO 1% OF A METAL SULFONATE SELECTED FROM THE GROUP CONSISTING OF AN ALKALI AND ALKALINE EARTH METAL SALT OF AN ORGANIC SULFONIC ACID, THE ORGANIC RADICAL THEREOF BEING SELECTED FROM THE GROUP CONSISTING OF PETROLEUM HYDROCARBON AND ALKYL-SUBSTITUTED AROMATIC HYDROCARBON RADICALS; FROM 0.05 TO 1% OF A PARTIAL ESTER OF A POLYHYDRIC ALCOHOL AND A HIGHER FATTY ACID HAVING AT LEAST 10 CARBON ATOMS, SAID ESTER HAVING AT LEAST ONE FREE HYDROXY GROUP; FROM 0.1 TO 5% OF A FIXED FATTY OIL AND THE BALANCE BEING MINERAL OIL.
Claim 2
Dependent Claim
127 words
A MARINE ENGINE LUBRICANT CAPABLE OF FORMING STABLE EMULSIONS WHEN IN CONTACT WITH AN AQUEOUS MEDIUM COMPRISING FROM 0.05 TO 1% OF A GLYOXALIDINE SELECTED FROM THE GROUP CONSISTING OF HYDROXY ALKYL- AND AMINO ALKYL-SUBSTITUTED GLYOXALIDINES; FROM 0.01 TO 1% OF A METAL SULFONATE SELECTED FROM THE GROUP CONSISTING OF AN ALKALI AND ALKALINE EARTH METAL SALT OF AN ORGANIC SULFONIC ACID, THE ORGANIC RADICAL THEREOF BEING SELECTED FROM THE GROUP CONSISTING OF PETROLEUM HYDROCARBON AND ALKYL-SUBSTITUTED AROMATIC HYDROCARBON RADICALS; FROM 0.05 TO 1% OF A PARTIAL ESTER OF A POLYHYDRIC ALCOHOL AND A HIGHER FATTY ACID HAVING AT LEAST 10 CARBON ATOMS, SAID ESTER HAVING AT LEAST ONE FREE HYDROXY GROUP; FROM 0.1 TO 5% OF A FIXED FATTY OIL AND THE BALANCE BEING MINERAL OIL.
References Cited (Backward Citations)
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US2434490A
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US2412634A
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US2443585A
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US2470537A
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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) | 1953-01-02 | 1953-07-04 | 1954-01-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-01-02 | 1957-07-04 | 1958-01-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-01-02 | 1961-07-04 | 1962-01-03 | $7700.00 | Window Closed / Lapsed |