Granted Patent
Utility
US 5,625,024 · App. 08/409,113
Branched polysiloxane-polyether-based copolymers, their preparation and use
Inventors:
Sabine Schlitte, Hubertus Eversheim, Gebhard Wagner, Karl-Heinz K asler, Jan Mazanek, Hans-Ulrich Meier-Westhues
Patented Case
View Patent ↗
Granted: Apr 29, 1997
Filed: Mar 23, 1995
Inventors
Sabine Schlitte
Hubertus Eversheim
Gebhard Wagner
Karl-Heinz K asler
Jan Mazanek
Hans-Ulrich Meier-Westhues
Assignee (at issue)
Bayer Aktiengesellschaft
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.