Granted Patent
Utility
US 5,442,087 · App. 08/165,148
Polymers having N,N-disubstituted sulfonamide pendent groups and use thereof
Inventors:
Mathias Eichhorn, Gerhard Buhr
Patented Case
View Patent ↗
Granted: Aug 15, 1995
Filed: Dec 10, 1993
Inventors
Mathias Eichhorn
Gerhard Buhr
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.