Granted Patent
Utility
US 6,165,950 · App. 09/196,720
Phosphate lubricant compositions and metal forming use
Inventors:
Arvind M. Rao, Douglas G. Placek
Patented Case
View Patent ↗
Granted: Dec 26, 2000
Filed: Nov 20, 1998
Inventors
Arvind M. Rao
Douglas G. Placek
Assignee (at issue)
PABU Services, 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.