Granted Patent
Utility
US 4,983,669 · App. 07/317,321
Thermosetting composition from maleimide, olefinic monomer and unsaturated polyester
Inventors:
Virginia Piermattie, George L. Brownell
Patented Case
View Patent ↗
Granted: Jan 8, 1991
Filed: Mar 1, 1989
Inventors
Virginia Piermattie
George L. Brownell
Assignee (at issue)
Aristech Chemical 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.