Granted Patent
Utility
US 6,432,162 · App. 09/375,369
Process for melting ashes, slags or glass
Inventors:
Hans Ruegg, Christian Steiner, Beat Stoffel, Christian Wieckert
Patented Case
View Patent ↗
Granted: Aug 13, 2002
Filed: Aug 17, 1999
Inventors
Hans Ruegg
Christian Steiner
Beat Stoffel
Christian Wieckert
Assignee (at issue)
Asea Brown Boveri, S.A.
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.