Granted Patent
Utility
US 5,480,960 · App. 08/274,949
Process for the preparation of an acid functional polyester resin
Inventors:
Jan Freriks, Pieter Groenveld, Petrus G. Kooijmans, Werner T. Raudenbush
Patented Case
View Patent ↗
Granted: Jan 2, 1996
Filed: Jul 14, 1994
Inventors
Jan Freriks
Pieter Groenveld
Petrus G. Kooijmans
Werner T. Raudenbush
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.