Granted Patent
Utility
US 6,500,221 · App. 09/865,609
Cooled tubes arranged to form impact type particle separators
Inventors:
David J. Walker, Mikhail Maryamchik, Sundara M. Kavidass, Felix Belin, Kiplin C. Alexander, David E. James, David Robert Gibbs, Donald L. Wietzke
Patented Case
View Patent ↗
Granted: Dec 31, 2002
Filed: May 25, 2001
Inventors
David J. Walker
Mikhail Maryamchik
Sundara M. Kavidass
Felix Belin
Kiplin C. Alexander
David E. James
David Robert Gibbs
Donald L. Wietzke
Assignee (at issue)
The Babcock & Wilcox 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.