Granted Patent
Utility
US 5,691,409 · App. 08/680,543
Phenolic resin molding material
Inventors:
Tamotsu Ishida, Masatoshi Yamoto
Patented Case
View Patent ↗
Granted: Nov 25, 1997
Filed: Jul 9, 1996
Inventors
Tamotsu Ishida
Masatoshi Yamoto
Assignee (at issue)
SUMITOMO BAKELITE CO., LTD.
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.