Lubricating oil compositions containing a dispersant amount of aminated nitroketonized hydrocarbon terpolymers
Patent 4007121 Issued on February 8, 1977. Estimated Expiration Date: 
February 8, 1994. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
February 8, 1994. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesInventorsAssigneeApplicationNo. 475531 filed on 06/03/1974US Classes:508/554, Plural nitrogens bonded directly to a single acyclic hydrocarbon chain (e.g., amides of ethylene diamine, etc.)508/555Additional oxygen or sulfur attached indirectly to the nitrogen by acyclic nonionic bonding (e.g., oxamides, etc.)ExaminersPrimary: Gantz, Delbert E.Assistant: Metz, Andrew H. Attorney, Agent or FirmAbstractLube oil, characterized by improved properties, may be prepared containing polymers having pendant N-hydrocarbylcarboxamide groups -- typically N-(N',N'-dihydrocarbylaminohydrocarbyl) carboxamide groups. | |
