Granted Patent
Utility
US 6,202,494 · App. 09/084,970
Process and apparatus for measuring density and mass flow
Inventors:
Ulrich Riebel, Peter Khatchikian
Patented Case
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Granted: Mar 20, 2001
Filed: May 28, 1998
Inventors
Ulrich Riebel
Peter Khatchikian
Assignee (at issue)
Degussa-Huels 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.