Granted Patent
Utility
US 5,476,883 · App. 08/274,453
Preparation process of acrylamide from purified acrylonitrile
Inventors:
Takeya Abe, Yoshihiko Kambara
Patented Case
View Patent ↗
Granted: Dec 19, 1995
Filed: Jul 13, 1994
Inventors
Takeya Abe
Yoshihiko Kambara
Assignee (at issue)
Mitsui Toatsu Chemicals, Incorporated
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.