Granted Patent
Utility
US 5,593,780 · App. 08/241,079
Impact resistant phenolics
Inventor:
Hugh A. Yap
Patented Case
View Patent ↗
Granted: Jan 14, 1997
Filed: May 11, 1994
Inventor
Hugh A. Yap
Assignee (at issue)
Fiberite 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.