Granted Patent
Utility
US 6,228,292 · App. 09/309,504
Process for the preparation of pulverulent heterogeneous substances
Inventors:
Martin Foerster, Andreas Gutsch, Rainer Domesle, Ralph Kiessling, Oliver Stohr
Patented Case
View Patent ↗
Granted: May 8, 2001
Filed: May 11, 1999
Inventors
Martin Foerster
Andreas Gutsch
Rainer Domesle
Ralph Kiessling
Oliver Stohr
Assignee (at issue)
Degussa 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.