Granted Patent
Utility
US 5,817,728 · App. 08/610,240
Preparation of degradable copolymers
Inventors:
Chojiro Higuchi, Hiroshi Suizu, Masatoshi Takagi, Takeshi Kashima, Yuji Terado, Ikumi Kitada, Masanobu Ajioka, Akihiro Yamaguchi, Taiji Kameoka
Patented Case
View Patent ↗
Granted: Oct 6, 1998
Filed: Mar 4, 1996
Inventors
Chojiro Higuchi
Hiroshi Suizu
Masatoshi Takagi
Takeshi Kashima
Yuji Terado
Ikumi Kitada
Masanobu Ajioka
Akihiro Yamaguchi
Taiji Kameoka
Assignee (at issue)
MITSUI CHEMICALS, INC.
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.