Granted Patent
Utility
US 4,496,692 · App. 06/567,285
Molding compositions of polyvinyl chloride and polymerizable plasticizers
Inventors:
Changkiu K. Riew, Frank H. Howard
Patented Case
View Patent ↗
Granted: Jan 29, 1985
Filed: Dec 30, 1983
Inventors
Changkiu K. Riew
Frank H. Howard
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.