Granted Patent
Utility
US 4,482,682 · App. 06/477,956
Process for preparing water-soluble, partially-hydrolyzed, solid acrylamide polymer
Inventors:
Hiroyuki Kudomi, Shinichi Sato
Patented Case
View Patent ↗
Granted: Nov 13, 1984
Filed: Mar 23, 1983
Inventors
Hiroyuki Kudomi
Shinichi Sato
Assignee (at issue)
Mitsubishi Chemical Industries, Ltd.
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.