Granted Patent
Utility
US 6,258,880 · App. 09/199,974
Stabilizers for improved weatherability of clear polyvinyl chloride compositions
Inventors:
Gary M. Conroy, Gene K. Norris
Patented Case
View Patent ↗
Granted: Jul 10, 2001
Filed: Nov 25, 1998
Inventors
Gary M. Conroy
Gene K. Norris
Assignee (at issue)
Morton International, 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.