Granted Patent
Utility
US 5,216,088 · App. 07/837,180
Two-step process for post-chlorinating poly(vinyl chloride)
Inventors:
Bernard F. Cinadr, Arthur L. Backman
Patented Case
View Patent ↗
Granted: Jun 1, 1993
Filed: Feb 18, 1992
Inventors
Bernard F. Cinadr
Arthur L. Backman
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.