Granted Patent
Utility
US 5,451,390 · App. 08/139,708
Flame-hydrolytically produced titanium dioxide mixed oxide, method of its production and its use
Inventors:
Werner Hartmann, Helmut Mangold, Dieter Kerner
Patented Case
View Patent ↗
Granted: Sep 19, 1995
Filed: Oct 22, 1993
Inventors
Werner Hartmann
Helmut Mangold
Dieter Kerner
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.