Granted Patent
Utility
US 4,897,501 · App. 07/226,086
Process for preparing aminopropyl alkoxy silanes
Inventors:
Kazutoshi Takatsuna, Mamoru Tachikawa, Kouji Shiozawa, Nobukazu Okamoto, Yoshiharu Okumura
Patented Case
View Patent ↗
Granted: Jan 30, 1990
Filed: Jul 29, 1988
Inventors
Kazutoshi Takatsuna
Mamoru Tachikawa
Kouji Shiozawa
Nobukazu Okamoto
Yoshiharu Okumura
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.