Granted Patent
Utility
US 5,708,162 · App. 08/416,185
Process for the preparation of low molecular weight polysaccharide ethers
Inventors:
Josef Hilbig, Reinhard Doenges
Patented Case
View Patent ↗
Granted: Jan 13, 1998
Filed: Apr 4, 1995
Inventors
Josef Hilbig
Reinhard Doenges
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.