Granted Patent
Utility
US 5,338,485 · App. 07/843,912
Polyacrylate esters with long-chain hydrocarbon and polyoxyalkylene groups and their use as surface active substances
Inventors:
Jurgen Fock, Eberhard Esselborn, Dietmar Schaefer
Patented Case
View Patent ↗
Granted: Aug 16, 1994
Filed: Feb 27, 1992
Inventors
Jurgen Fock
Eberhard Esselborn
Dietmar Schaefer
Assignee (at issue)
GOLDSCHMIDT HOLDING 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.