Granted Patent
Utility
US 6,796,141 · App. 10/257,431
Cooler and a method for cooling hot bulk material
Inventors:
Gerhard Kastingschafer, Wolfgang Rother, Gunter Milewski, Martin Uhde, Arthur Berger, Hermann Niemerg, Ludwig Könning, Helmut Berief, Patrick BRUNELOT
Patented Case
View Patent ↗
Granted: Sep 28, 2004
Filed: Dec 4, 2002
Inventors
Gerhard Kastingschafer
Wolfgang Rother
Gunter Milewski
Martin Uhde
Arthur Berger
Hermann Niemerg
Ludwig Könning
Helmut Berief
Patrick BRUNELOT
Assignee (at issue)
Polysius AG
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.