Granted Patent
Utility
US 4,818,318 · App. 06/858,900
Method of forming composite fiber blends
Inventors:
Paul E. McMahon, Tai-Shung Chung, Lincoln Ying
Patented Case
View Patent ↗
Granted: Apr 4, 1989
Filed: Apr 28, 1986
Inventors
Paul E. McMahon
Tai-Shung Chung
Lincoln Ying
Assignee (at issue)
Hoechst Celanese Corporation
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.