Granted Patent
Utility
US 5,096,501 · App. 07/573,602
Environmentally safe cleaning process and cleaning composition useful therein
Inventors:
Kenneth T. Dishart, David S. Lermond
Patented Case
View Patent ↗
Granted: Mar 17, 1992
Filed: Aug 27, 1990
Inventors
Kenneth T. Dishart
David S. Lermond
Assignee (at issue)
E.I. DU PONT DE NEMOURS AND 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.