Granted Patent
Utility
US 5,906,808 · App. 09/062,910
Process of preparing a topical antimicrobial cleanser
Inventors:
David W. Osborne, Fred Kirchner
Patented Case
View Patent ↗
Granted: May 25, 1999
Filed: Apr 20, 1998
Inventors
David W. Osborne
Fred Kirchner
Assignee (at issue)
Calgon Vestal, 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.