Granted Patent
Utility
US 4,327,021 · App. 06/209,446
PVC Plasticized with dicyclohexylbiphenyl and primary plasticizer
Inventors:
Brian C. Davis, Robert P. Bryer
Patented Case
View Patent ↗
Granted: Apr 27, 1982
Filed: Nov 24, 1980
Inventors
Brian C. Davis
Robert P. Bryer
Assignee (at issue)
SUNTEC CO., LTD.
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.