Granted Patent
Utility
US 5,354,832 · App. 08/048,707
Stable aqueous dispersions containing siloxanes for treating cellulosic material
Inventors:
Wen-Hsuan Chang, John F. Grunewalder, Mark A. Harley, Edward E. McEntire
Patented Case
View Patent ↗
Granted: Oct 11, 1994
Filed: Apr 16, 1993
Inventors
Wen-Hsuan Chang
John F. Grunewalder
Mark A. Harley
Edward E. McEntire
Assignee (at issue)
PPG Industries, 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.