Granted Patent
Utility
US 5,296,573 · App. 07/648,725
Polyacrylate ester with long-chain alkoxylated hydrocarbonoxy groups and their use in cosmetics and personal grooming
Inventors:
Eberhard Esselborn, Jurgen Fock, Gotz Koerner, Dietmar Schaefer
Patented Case
View Patent ↗
Granted: Mar 22, 1994
Filed: Jan 31, 1991
Inventors
Eberhard Esselborn
Jurgen Fock
Gotz Koerner
Dietmar Schaefer
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.