Granted Patent
Utility
US 4,413,077 · App. 06/275,575
Oligomeric aromatic polyphosphites
Inventors:
Leo L. Valdiserri, Ingenuin Hechenbleikner
Patented Case
View Patent ↗
Granted: Nov 1, 1983
Filed: Jun 22, 1981
Inventors
Leo L. Valdiserri
Ingenuin Hechenbleikner
Assignee (at issue)
Borg-Warner Chemicals, Inc.
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.