Granted Patent
Utility
US 4,722,802 · App. 06/844,409
Process for the manufacture of surfactant cleansing blocks and compositions thereof
Inventors:
Richard S. Hutchings, Robert Richard Ziek, Jr.
Patented Case
View Patent ↗
Granted: Feb 2, 1988
Filed: Mar 26, 1986
Inventors
Richard S. Hutchings
Robert Richard Ziek, Jr.
Assignee (at issue)
The Drackett 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.