Granted Patent
Utility
US 5,133,873 · App. 07/659,583
Process for removal of copper ions from aqueous effluent
Inventors:
Joseph C. Catlin, Margaret D. Ellis, James J. Good, Mark A. Putnam, Neal E. Tonks, Donald V. Wood
Patented Case
View Patent ↗
Granted: Jul 28, 1992
Filed: Feb 22, 1991
Inventors
Joseph C. Catlin
Margaret D. Ellis
James J. Good
Mark A. Putnam
Neal E. Tonks
Donald V. Wood
Assignee (at issue)
Miles 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.