Granted Patent
Utility
US 4,459,387 · App. 06/418,813
Chlorination of poly(vinyl chloride) in liquid chlorine, and chlorinated poly(vinyl chloride) composition
Inventor:
Richard G. Parker
Patented Case
View Patent ↗
Granted: Jul 10, 1984
Filed: Sep 16, 1982
Inventor
Richard G. Parker
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.