Granted Patent
Utility
US 5,709,756 · App. 08/744,013
Basic stripping and cleaning composition
Inventors:
Irl E. Ward, Francis W. Michelotti, Darryl Peters
Patented Case
View Patent ↗
Granted: Jan 20, 1998
Filed: Nov 5, 1996
Inventors
Irl E. Ward
Francis W. Michelotti
Darryl Peters
Assignee (at issue)
Ashland, 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.