Granted Patent
Utility
US 5,294,254 · App. 07/975,089
Aqueous fine dispersion of an organophilic sheet silicate
Inventors:
Guido Dessauer, Klaus Kuber, Ute Horn
Patented Case
View Patent ↗
Granted: Mar 15, 1994
Filed: Nov 12, 1992
Inventors
Guido Dessauer
Klaus Kuber
Ute Horn
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.