Granted Patent
Utility
US 6,238,633 · App. 08/885,913
Process for preparing calcium aluminate from aluminum dross
Inventors:
John W. Pickens, Edward Lee Morris, Jr.
Patented Case
View Patent ↗
Granted: May 29, 2001
Filed: Jun 30, 1997
Inventors
John W. Pickens
Edward Lee Morris, Jr.
Assignee (at issue)
Aluminum Waste Technology, 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.