Granted Patent
Utility
US 6,063,354 · App. 09/009,254
Pyrogenic oxides and a process for their preparation
Inventors:
Helmut Mangold, Peer Plambeck-Fischer, Ingo Pauli, Karlheinz Janzon
Patented Case
View Patent ↗
Granted: May 16, 2000
Filed: Jan 20, 1998
Inventors
Helmut Mangold
Peer Plambeck-Fischer
Ingo Pauli
Karlheinz Janzon
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.