Granted Patent
Utility
US 5,756,570 · App. 08/819,024
Electrical grade polyvinyl chloride resin composition stabilized with a non-lead stabilizer
Inventors:
Samuel Hoch, Michael H. Fisch
Patented Case
View Patent ↗
Granted: May 26, 1998
Filed: Mar 17, 1997
Inventors
Samuel Hoch
Michael H. Fisch
Assignee (at issue)
Witco 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.