Granted Patent
Utility
US 5,891,962 · App. 08/527,718
Transparent, rubber-modified styrene resin and production process thereof
Inventors:
Shiro Otsuzuki, Mune Iwamoto, Akihiko Nakajima, Masato Takaku, Hisao Morita, Koji Kawano
Patented Case
View Patent ↗
Granted: Apr 6, 1999
Filed: Sep 13, 1995
Inventors
Shiro Otsuzuki
Mune Iwamoto
Akihiko Nakajima
Masato Takaku
Hisao Morita
Koji Kawano
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.