Granted Patent
Utility
US 5,478,477 · App. 08/334,307
Use of alginates to treat bauxite red mud
Inventors:
Manian Ramesh, John D. Kildea, Robert P. Mahoney
Patented Case
View Patent ↗
Granted: Dec 26, 1995
Filed: Nov 4, 1994
Inventors
Manian Ramesh
John D. Kildea
Robert P. Mahoney
Assignee (at issue)
Nalco Chemical Company
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.