Granted Patent
Utility
US 4,154,910 · App. 05/795,522
Method for producing acrylamide polymers
Inventors:
Katsutoshi Tanaka, Kazuo Ikeda
Patented Case
View Patent ↗
Granted: May 15, 1979
Filed: May 10, 1977
Inventors
Katsutoshi Tanaka
Kazuo Ikeda
Assignees (at issue)
Kyoritsu Yuki Co., Ltd.
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.