Granted Patent
Utility
US 5,064,883 · App. 07/259,944
Stabilization of acid catalyzed thermoset resins with n-hydroxy hindered amines
Inventors:
Rudolf A. Behrens, Roger F. Malherbe
Patented Case
View Patent ↗
Granted: Nov 12, 1991
Filed: Oct 19, 1988
Inventors
Rudolf A. Behrens
Roger F. Malherbe
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.