Granted Patent
Utility
US 4,446,255 · App. 06/454,326
Sized carbon fibers suitable for use in composites of improved impact resistance
Inventors:
Lincoln Ying, Thomas P. Carter
Patented Case
View Patent ↗
Granted: May 1, 1984
Filed: Dec 29, 1982
Inventors
Lincoln Ying
Thomas P. Carter
Assignee (at issue)
Celanese GmbH
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.