Granted Patent
Utility
US 4,283,516 · App. 06/089,096
Process for the suspension polymerization of polyvinyl chloride
Inventor:
William D. Peeples
Patented Case
View Patent ↗
Granted: Aug 11, 1981
Filed: Oct 29, 1979
Inventor
William D. Peeples
Assignee (at issue)
Diamond Shamrock Plastics 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.