Granted Patent
Utility
US 4,614,756 · App. 06/761,445
Stabilization composition for clear, impact-modified PVC
Inventor:
Leo L. Valdiserri
Patented Case
View Patent ↗
Granted: Sep 30, 1986
Filed: Aug 1, 1985
Inventor
Leo L. Valdiserri
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.