Granted Patent
Utility
US 5,811,198 · App. 08/958,348
Acid functional and epoxy functional polyester resins
Inventors:
Jan Freriks, Petrus G. Kooijmans, Gerrit G. Rosenbrand, Marianne Angele Walravens
Patented Case
View Patent ↗
Granted: Sep 22, 1998
Filed: Oct 27, 1997
Inventors
Jan Freriks
Petrus G. Kooijmans
Gerrit G. Rosenbrand
Marianne Angele Walravens
Assignee (at issue)
SHELL OIL COMPANY
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.