Granted Patent
Utility
US 5,196,506 · App. 07/914,016
Polymide
Inventors:
Shoji Tamai, Masahiro Ohta, Akihiro Yamaguchi
Patented Case
View Patent ↗
Granted: Mar 23, 1993
Filed: Jul 15, 1992
Inventors
Shoji Tamai
Masahiro Ohta
Akihiro Yamaguchi
Assignee (at issue)
Mitsui Toatsu Chemicals, Incorporated
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.