Granted Patent
Utility
US 4,997,720 · App. 07/555,551
Thermoplastic compositions and articles made therefrom
Inventors:
Edward A. Bourbonais, Davei Yu, Khemchand Nangrani
Patented Case
View Patent ↗
Granted: Mar 5, 1991
Filed: Jul 19, 1990
Inventors
Edward A. Bourbonais
Davei Yu
Khemchand Nangrani
Assignee (at issue)
THE DEXTER 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.