Granted Patent
Utility
US 4,874,803 · App. 07/099,192
Dianhydride coupled polymer stabilizers
Inventors:
Arthur L. Baron, Terry N. Myers, Jerome Wicher
Patented Case
View Patent ↗
Granted: Oct 17, 1989
Filed: Sep 21, 1987
Inventors
Arthur L. Baron
Terry N. Myers
Jerome Wicher
Assignee (at issue)
Pennwalt Corporation
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.