Granted Patent
Utility
US 5,444,137 · App. 08/005,291
Highly selective chelating resins and monomers for their preparation
Inventors:
Donald W. McQuigg, Edward E. Sowers
Patented Case
View Patent ↗
Granted: Aug 22, 1995
Filed: Jan 19, 1993
Inventors
Donald W. McQuigg
Edward E. Sowers
Assignee (at issue)
Reilly Industries, Inc.
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.