Granted Patent
Utility
US 4,883,628 · App. 06/910,245
Method for preparing tenacity and modulus polyacrylonitrile fiber
Inventors:
Young D. Kwon, Sheldon Kavesh, Dusan C. Prevorsek
Patented Case
View Patent ↗
Granted: Nov 28, 1989
Filed: Sep 18, 1986
Inventors
Young D. Kwon
Sheldon Kavesh
Dusan C. Prevorsek
Assignee (at issue)
AlliedSignal, Inc.
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.