Granted Patent
Utility
US 4,874,837 · App. 07/141,808
Aminated hydroxylated polyester polyol resin and molding compositions comprised thereof
Inventors:
James P. Bershas, Russell H. Tobias
Patented Case
View Patent ↗
Granted: Oct 17, 1989
Filed: Jan 11, 1988
Inventors
James P. Bershas
Russell H. Tobias
Assignee (at issue)
Owens-Corning Fiberglas Corp.
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.