Granted Patent
Utility
US 5,803,949 · App. 08/641,006
Fluidized bed roasting process
Inventors:
Murray Brown, David W. Goosen
Patented Case
View Patent ↗
Granted: Sep 8, 1998
Filed: Apr 29, 1996
Inventors
Murray Brown
David W. Goosen
Assignee (at issue)
Cominco, Ltd.
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.