Granted Patent
Utility
US 5,470,383 · App. 08/263,089
Thickener combinations for building products
Inventors:
Walter Schermann, Dennis Miller, Eckhard Hilgenfeldt, Jozef Bohme-Kovac
Patented Case
View Patent ↗
Granted: Nov 28, 1995
Filed: Jun 21, 1994
Inventors
Walter Schermann
Dennis Miller
Eckhard Hilgenfeldt
Jozef Bohme-Kovac
Assignee (at issue)
Hoechst GmbH
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.