Granted Patent
Utility
US 5,206,337 · App. 07/696,647
Solvent-soluble polyimidesiloxane oligomer and process for producing the same
Inventors:
Toshiro Takeda, Naoshige Takeda, Akira Tokoh
Patented Case
View Patent ↗
Granted: Apr 27, 1993
Filed: May 7, 1991
Inventors
Toshiro Takeda
Naoshige Takeda
Akira Tokoh
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.