Granted Patent
Utility
US 4,698,178 · App. 06/777,593
Use of polyoxyalkylene-polysiloxane copolymers with silicon-linked, long-chain alkyl radicals as emulsifiers for the preparation of water/oil emulsions
Inventors:
Rudolf Huttinger, Hans-Joachim Kollmeier, Rolf-Dieter Langenhagen, Alfred Walter, Wilhelm Wolfes
Patented Case
View Patent ↗
Granted: Oct 6, 1987
Filed: Sep 19, 1985
Inventors
Rudolf Huttinger
Hans-Joachim Kollmeier
Rolf-Dieter Langenhagen
Alfred Walter
Wilhelm Wolfes
Assignee (at issue)
Th. Goldschmidt. AG
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.