Granted Patent
Utility
US 4,900,861 · App. 07/254,838
Method of producing polysilane compounds
Inventors:
Keiichi Yokoyama, Katsuo Taniguchi, Yoshihisa Kiso
Patented Case
View Patent ↗
Granted: Feb 13, 1990
Filed: Oct 7, 1988
Inventors
Keiichi Yokoyama
Katsuo Taniguchi
Yoshihisa Kiso
Assignee (at issue)
Mitsui Petrochemical Industries, 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.