Granted Patent
Utility
US 5,861,528 · App. 08/785,827
Process for preparing diels-alder addition product from conjugated diolefin and acrylonitrile
Inventors:
Masamitsu Inomata, Masahiro Takeno, Akio Numa, Hiroki Mizutani, Masanobu Ebina, Isao Fukada
Patented Case
View Patent ↗
Granted: Jan 19, 1999
Filed: Jan 15, 1997
Inventors
Masamitsu Inomata
Masahiro Takeno
Akio Numa
Hiroki Mizutani
Masanobu Ebina
Isao Fukada
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.