Granted Patent
Utility
US 5,314,533 · App. 07/902,882
Aqueous emulsions containing organosilicon compounds for the impregnation of inorganic materials
Inventors:
Thomas Goebel, Rudolf Michel, Harald Alff, Josef Karl
Patented Case
View Patent ↗
Granted: May 24, 1994
Filed: Jun 23, 1992
Inventors
Thomas Goebel
Rudolf Michel
Harald Alff
Josef Karl
Assignee (at issue)
Degussa AG
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.