Granted Patent
Utility
US 4,514,551 · App. 06/572,753
Process for the preparation of cationic polymers
Inventors:
Akihisa Furuno, Kenichi Inukai, Yasuo Ogawa
Patented Case
View Patent ↗
Granted: Apr 30, 1985
Filed: Jan 23, 1984
Inventors
Akihisa Furuno
Kenichi Inukai
Yasuo Ogawa
Assignees (at issue)
Nitto Chemical Industry Co., Ltd.
MITSUBISHI ELECTRIC CORPORATION
Diafloc Co., 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.