Granted Patent
Utility
US 5,401,428 · App. 08/133,720
Water soluble metal working fluids
Inventors:
Dennis J. Kalota, Larry A. Spickard, Skippy H. Ramsey
Patented Case
View Patent ↗
Granted: Mar 28, 1995
Filed: Oct 8, 1993
Inventors
Dennis J. Kalota
Larry A. Spickard
Skippy H. Ramsey
Assignee (at issue)
Monsanto Company
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.