Granted Patent
Utility
US 4,886,860 · App. 07/326,399
Polymetalosilazane and process for preparing same
Inventors:
Mikiro Arai, Osamu Funayama, Yuuji Tashiro, Takeshi Isoda
Patented Case
View Patent ↗
Granted: Dec 12, 1989
Filed: Mar 17, 1989
Inventors
Mikiro Arai
Osamu Funayama
Yuuji Tashiro
Takeshi Isoda
Assignee (at issue)
Toa Nenryo Kogyo Kabushiki Kaisha
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.