Granted Patent
Utility
US 6,416,649 · App. 09/835,595
Electrolytic production of high purity aluminum using ceramic inert anodes
Inventors:
Siba P. Ray, Xinghua Liu, Douglas A. Weirauch, Jr., Robert A. DiMilia, Joseph M. Dynys, Frankie E. Phelps, Alfred F. LaCamera
Patented Case
View Patent ↗
Granted: Jul 9, 2002
Filed: Apr 16, 2001
Inventors
Siba P. Ray
Xinghua Liu
Douglas A. Weirauch, Jr.
Robert A. DiMilia
Joseph M. Dynys
Frankie E. Phelps
Alfred F. LaCamera
Assignee (at issue)
ALCOA 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.