Granted Patent
Utility
US 4,863,607 · App. 07/081,933
Method for removing amine from oil
Inventors:
John E. Andrew, Howard R. Herrigel, George R. Jones, James C. Nowak, Mark K. Tose, Robert L. Whalen
Patented Case
View Patent ↗
Granted: Sep 5, 1989
Filed: Aug 3, 1987
Inventors
John E. Andrew
Howard R. Herrigel
George R. Jones
James C. Nowak
Mark K. Tose
Robert L. Whalen
Assignee (at issue)
Resources Conservation, 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.