Granted Patent
Utility
US 5,484,851 · App. 08/172,678
Polyvinyl-polyoxyalkylene block copolymers
Inventor:
Jurgen Fock
Patented Case
View Patent ↗
Granted: Jan 16, 1996
Filed: Dec 22, 1993
Inventor
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.