Granted Patent
Utility
US 4,448,658 · App. 06/411,161
Use of high-intensity rapidly-pulsating actinic radiation in the chlorination of polyvinyl chloride resin
Inventor:
Alan J. Olson
Patented Case
View Patent ↗
Granted: May 15, 1984
Filed: Aug 25, 1982
Inventor
Alan J. Olson
Assignee (at issue)
B. F. Goodrich Company
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.