Granted Patent
Utility
US 5,030,744 · App. 07/466,962
Polyborosilazane and process for producing same
Inventors:
Osamu Funayama, Mikiro Arai, Yuuji Tashiro, Takeshi Isoda, Kiyoshi Sato
Patented Case
View Patent ↗
Granted: Jul 9, 1991
Filed: Jan 18, 1990
Inventors
Osamu Funayama
Mikiro Arai
Yuuji Tashiro
Takeshi Isoda
Kiyoshi Sato
Assignee (at issue)
Tonen Corporation
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.