Granted Patent
Utility
US 4,927,562 · App. 07/246,043
Elastomer-compatible oxalic acid acylated alkenylsuccinimides
Inventors:
Thomas J. Karol, Theodore E. Nalesnik
Patented Case
View Patent ↗
Granted: May 22, 1990
Filed: Oct 24, 1988
Inventors
Thomas J. Karol
Theodore E. Nalesnik
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.