Granted Patent
Utility
US 4,554,086 · App. 06/604,188
Borate esters of hydrocarbyl-substituted mono- and bis-succinimides containing polyamine chain linked hydroxyacyl groups and lubricating oil compositions containing same
Inventors:
Thomas J. Karol, Harold S. Magaha
Patented Case
View Patent ↗
Granted: Nov 19, 1985
Filed: Apr 26, 1984
Inventors
Thomas J. Karol
Harold S. Magaha
Assignee (at issue)
Texaco Inc.
This patent predates the USPTO's electronic file wrapper — prosecution documents from this era exist only in the Patent Office's paper records. A certified copy of the file history can be ordered from the USPTO's paper archives.