Granted Patent
Utility
US 5,728,895 · App. 08/727,983
Polymeric thickeners for aqueous compositions
Inventors:
Michael S. Wiggins, Reuben H. Grinstein, Stephen A. Fischer
Patented Case
View Patent ↗
Granted: Mar 17, 1998
Filed: Oct 9, 1996
Inventors
Michael S. Wiggins
Reuben H. Grinstein
Stephen A. Fischer
Assignee (at issue)
Henkel Limited
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.