Granted Patent
Utility
US 6,458,749 · App. 09/900,029
Method for improving low-temperature fluidity of lubricating oils using high-and-low-molecular weight polymer
Inventors:
Bernard Kinker, Thomas A. Mc Gregor, Joan Souchik
Patented Case
View Patent ↗
Granted: Oct 1, 2002
Filed: Jul 9, 2001
Inventors
Bernard Kinker
Thomas A. Mc Gregor
Joan Souchik
Assignee (at issue)
RohMax Additives GmbH
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.