Granted Patent
Utility
US 4,952,645 · App. 07/287,581
Epoxide resins containing polyesters based on polyalkylene glycols
Inventors:
Rolf Mulhaupt, Julia Mockel-Weber
Patented Case
View Patent ↗
Granted: Aug 28, 1990
Filed: Dec 16, 1988
Inventors
Rolf Mulhaupt
Julia Mockel-Weber
Assignee (at issue)
Ciba-Geigy
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.