Granted Patent
Utility
US 5,872,163 · App. 08/738,561
Liquid epoxy resin composition containing wollastonite and calcite
Inventors:
Werner Hollstein, Werner Pfander, Irene Jennrich, Rolf Grebenstein
Patented Case
View Patent ↗
Granted: Feb 16, 1999
Filed: Oct 28, 1996
Inventors
Werner Hollstein
Werner Pfander
Irene Jennrich
Rolf Grebenstein
Assignee (at issue)
Ciba Specialty Chemicals 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.