Granted Patent
Utility
US 4,910,355 · App. 07/266,156
Olefin oligomer functional fluid using internal olefins
Inventors:
Ronald L. Shubkin, Gerhard O. Kuehnhanss
Patented Case
View Patent ↗
Granted: Mar 20, 1990
Filed: Nov 2, 1988
Inventors
Ronald L. Shubkin
Gerhard O. Kuehnhanss
Assignee (at issue)
Ethyl Corporation
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.