Granted Patent
Utility
US 4,621,103 · App. 06/645,489
Aminopolyol anion exchange resins for separation isotopes
Inventors:
Masao Kosuge, Junji Fukuda
Patented Case
View Patent ↗
Granted: Nov 4, 1986
Filed: Aug 29, 1984
Inventors
Masao Kosuge
Junji Fukuda
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.