Granted Patent
Utility
US 6,248,839 · App. 09/018,144
Mercapto-containing block copolymers having polymethacrylic acid and polyalkylene oxide repeating groups
Inventors:
Eberhard Esselborn, Jurgen Fock, Arno Knebelkamp
Patented Case
View Patent ↗
Granted: Jun 19, 2001
Filed: Feb 3, 1998
Inventors
Eberhard Esselborn
Jurgen Fock
Arno Knebelkamp
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.