Granted Patent
Utility
US 4,412,898 · App. 06/350,982
Process for chlorination of PVC in water without use of swelling agents
Inventors:
Alan J. Olson, Robert G. Vielhaber
Patented Case
View Patent ↗
Granted: Nov 1, 1983
Filed: Feb 22, 1982
Inventors
Alan J. Olson
Robert G. Vielhaber
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.