US3287271A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combined detergent-corrosion inhibitors
Assignee: Chevron USA Inc
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Filing: 1965-01-21
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Granted: 1966-11-22
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Expires: 1985-01-21
Abstract
No abstract record available.
Inventors
- 👤 Frank A Stuart
- 👤 Lowe Warren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 00:43
CPC Classifications
C; C10; C10M; C10M133/00; C10M133/52; C10M133/56; C10M2205/00; C10M2205/02; C10M2205/026; C10M2205/028; C10M2207/00; C10M2207/28; C10M2207/282; C10M2207/34; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/105; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/086; C10M2215/24; C10M2215/26; C10M2215/28; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/045; C10M2229/00; C10M2229/04; C10M2229/041; C10M2229/042; C10N; C10N2010/00; C10N2010/04; C10N2040/00; C10N2040/25; C10N2040/251; C10N2040/255; C10N2040/28
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
193 words
A LUBRICATING OIL COMPOSITION COMPRISING AN OIL LIBRICATING VISCOSITY AND A PRODUCT OBTAINED BY (1) REACTING AT A TEMPERATURE IN THE RANGE OF FROM ABOUT 200* F. TO 500*F: (A) AN ALKENYL SUCCINIC ANHYDRIDE HAVING FROM 30 TO 200 CARBON ATOMS IN THE ALKENYL RADICAL, WITH (B) AN ALKYLENE POLYAMINE HAVING FROM 1 TO 2 PRIMARY AMINO GROUPS, FROM 2 TO 20 CARBON ATOMS AND FROM 1 TO 11 NITROGEN ATOMS; WHEREIN THE MOLE RATIO OF THE POLYAMINE TO THE ANHYDRIDE IS FROM ABOUT 0.5:1 TO ABOUT 1:1; FOLLOWED BY (2) REACTING AT A TEMPERATURE IN THE RANGE PF ABOUT 200* TO 300*F., (A) THE PRODUCT OF (1) WITH (B) AN AROMATIC DICARBOXYLIC ACID OF FROM 8 TO 14 CARBON ATOMS HAVING FROM 0 TO 2 ALKYL SUBSTITUENTS AND WHEREIN THE CARBOXYL GROUPS ARE BOND TO ANNULAR CARBON ATOMS SEPARATED BY AT LEAST ONE ANNULAR CARBON ATOM; SUCH THAT THE WEIGHT RATIO OF THE PRODUCT OF (1) TO THE DICARBOXYLIC ACID OF (2) IS LESS THAN 200:1, THE PRODUCT OF REACTION (1) AND (2) BEING PRESENT IN SAID OIL COMPOSITION IN AMOUNT OF 0.001 TO 0.75 WEIGHT PERCENT BASED ON DICARBOXYLIC ACID CONTENT.
Claim 2
Dependent Claim
193 words
A LUBRICATING OIL COMPOSITION COMPRISING AN OIL LIBRICATING VISCOSITY AND A PRODUCT OBTAINED BY (1) REACTING AT A TEMPERATURE IN THE RANGE OF FROM ABOUT 200* F. TO 500*F: (A) AN ALKENYL SUCCINIC ANHYDRIDE HAVING FROM 30 TO 200 CARBON ATOMS IN THE ALKENYL RADICAL, WITH (B) AN ALKYLENE POLYAMINE HAVING FROM 1 TO 2 PRIMARY AMINO GROUPS, FROM 2 TO 20 CARBON ATOMS AND FROM 1 TO 11 NITROGEN ATOMS; WHEREIN THE MOLE RATIO OF THE POLYAMINE TO THE ANHYDRIDE IS FROM ABOUT 0.5:1 TO ABOUT 1:1; FOLLOWED BY (2) REACTING AT A TEMPERATURE IN THE RANGE PF ABOUT 200* TO 300*F., (A) THE PRODUCT OF (1) WITH (B) AN AROMATIC DICARBOXYLIC ACID OF FROM 8 TO 14 CARBON ATOMS HAVING FROM 0 TO 2 ALKYL SUBSTITUENTS AND WHEREIN THE CARBOXYL GROUPS ARE BOND TO ANNULAR CARBON ATOMS SEPARATED BY AT LEAST ONE ANNULAR CARBON ATOM; SUCH THAT THE WEIGHT RATIO OF THE PRODUCT OF (1) TO THE DICARBOXYLIC ACID OF (2) IS LESS THAN 200:1, THE PRODUCT OF REACTION (1) AND (2) BEING PRESENT IN SAID OIL COMPOSITION IN AMOUNT OF 0.001 TO 0.75 WEIGHT PERCENT BASED ON DICARBOXYLIC ACID CONTENT.
Claim 3
Dependent Claim
15 words
A COMPOSITION ACCORDING TO CLAIM 1 HAVING FROM 0.1 TO 3 WEIGHT PERCENT TRICRESYL PHOSPHATE.
References Cited (Backward Citations)
FR1367939A
Cited
US3216936A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-21 | 1970-05-23 | 1970-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-21 | 1974-05-23 | 1974-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-21 | 1978-05-23 | 1978-11-22 | $7700.00 | Window Closed / Lapsed |