Granted Patent
Utility
US 5,523,373 · App. 08/424,745
Polymethacrylate ester/polysiloxane block co-polymers method for theirsynthesis and their use as modifiers and as lacquer and varnish additives
Inventors:
Eberhard Esselborn, Jurgen Fock
Patented Case
View Patent ↗
Granted: Jun 4, 1996
Filed: Apr 18, 1995
Inventors
Eberhard Esselborn
Jurgen Fock
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.