US3033790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating composition
Assignee: Shell USA Inc
•
Filing: 1958-06-17
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Granted: 1962-05-08
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Expires: 1978-06-17
Abstract
No abstract record available.
Inventors
- 👤 Richard C Nelson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 06:25
CPC Classifications
C; C10; C10M; C10M149/00; C10M149/02; C10M149/06; C08; C08F; C08F16/00; C10M145/00; C10M145/02; C10M145/10; C10M145/12; C10M145/14; C10M145/16; C10M149/04; C10M2201/00; C10M2201/08; C10M2201/082; C10M2201/083; C10M2205/00; C10M2205/02; C10M2205/026; C10M2205/04; C10M2205/22; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/024; C10M2207/026; C10M2207/027; C10M2207/028; C10M2207/10; C10M2207/14; C10M2207/144; C10M2207/146; C10M2207/28; C10M2207/282; C10M2207/34; C10M2207/40; C10M2207/402; C10M2207/404; C10M2209/00; C10M2209/02; C10M2209/04; C10M2209/06; C10M2209/062; C10M2209/08; C10M2209/084; C10M2209/086; C10M2209/10; C10M2209/101; C10M2209/103; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/02; C10M2217/022; C10M2217/023; C10M2217/024; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/046; C10M2219/08; C10M2219/082; C10M2221/00; C10M2221/02; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/045; C10M2223/06; C10M2223/065; C10M2223/12; C10M2225/00; C10M2225/04; C10M2229/00; C10M2229/04; C10M2229/041; C10N; C10N2010/00; C10N2010/04; C10N2030/00; C10N2030/12; C10N2040/00; C10N2040/14; C10N2040/16; C10N2040/17; C10N2040/20; C10N2040/24; C10N2040/241; C10N2040/242; C10N2040/243; C10N2040/244; C10N2040/245; C10N2040/246; C10N2040/247; C10N2040/46; C10N2050/00; C10N2050/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
A HYDROCARBON OIL CONTAINING A MINOR AMOUNT, SUFFICIENT TO STABILIZE AND IMPART DETERGENCY TO THE OIL, OF AN OIL-SOLUBLE COPOLYMER SELECTED FROM THE GROUP CONSISTING OF (A) HYDROLYZED COPOLYMER OF AN ALKYL ESTER AND AN ACRYLIC ESTER OF AN ALIPHATIC ALCOHOL HAVING AT LEAST EIGHT CARBON ATOMS AND (B) A COPOLYMER OF (1) AN ALLYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALLYL ALCOHOL, ALLYL AMINE AND ALLYL CARBAMATE AND (2) AN ACRYLIC ESTER OF AN ALIPHATIC ALCOHOL HAVING AT LEAST EIGHT CARBON ATOMS, IN THE MOL RATIO OF (1) AND (2) OF FROM 1:1 TO 15:1, RESPECTIVELY, SAID COPOLYMER HAVING A MOLECULAR WEIGHT OF AT LEAST 1500.
Claim 2
Dependent Claim
108 words
A HYDROCARBON OIL CONTAINING A MINOR AMOUNT, SUFFICIENT TO STABILIZE AND IMPART DETERGENCY TO THE OIL, OF AN OIL-SOLUBLE COPOLYMER SELECTED FROM THE GROUP CONSISTING OF (A) HYDROLYZED COPOLYMER OF AN ALKYL ESTER AND AN ACRYLIC ESTER OF AN ALIPHATIC ALCOHOL HAVING AT LEAST EIGHT CARBON ATOMS AND (B) A COPOLYMER OF (1) AN ALLYL COMPOUND SELECTED FROM THE GROUP CONSISTING OF ALLYL ALCOHOL, ALLYL AMINE AND ALLYL CARBAMATE AND (2) AN ACRYLIC ESTER OF AN ALIPHATIC ALCOHOL HAVING AT LEAST EIGHT CARBON ATOMS, IN THE MOL RATIO OF (1) AND (2) OF FROM 1:1 TO 15:1, RESPECTIVELY, SAID COPOLYMER HAVING A MOLECULAR WEIGHT OF AT LEAST 1500.
References Cited (Backward Citations)
US2600421A
Cited
US2600448A
Cited
US2600446A
Cited
US2600383A
Cited
GB759918A
Cited
GB758203A
Cited
GB759517A
Cited
US2800450A
Cited
US2800452A
Cited
US2800453A
Cited
US2892783A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-05-07 | 1965-11-06 | 1966-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-07 | 1969-11-06 | 1970-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-07 | 1973-11-06 | 1974-05-08 | $7700.00 | Window Closed / Lapsed |