Granted Patent
Utility
US 4,345,101 · App. 06/269,602
Process for purifying an aqueous solution of acrylamide
Inventors:
Shiro Asano, Kohei Shizuka, Yoshihiko Kambara, Junji Mikami, Hiroshi Kato, Tadatoshi Honda
Patented Case
View Patent ↗
Granted: Aug 17, 1982
Filed: Jun 2, 1981
Inventors
Shiro Asano
Kohei Shizuka
Yoshihiko Kambara
Junji Mikami
Hiroshi Kato
Tadatoshi Honda
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.