Granted Patent
Utility
US 5,017,238 · App. 07/400,832
Aqueous cleaning dispersions using adsorptive polymeric powder and method of using
Inventors:
Richard C. Chromecek, Milan F. Sojka
Patented Case
View Patent ↗
Granted: May 21, 1991
Filed: Aug 30, 1989
Inventors
Richard C. Chromecek
Milan F. Sojka
Assignee (at issue)
Dow Corning Corporation
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.