Granted Patent
Utility
US 6,695,907 · App. 10/295,895
Dispersions containing pyrogenic oxides
Inventors:
Thomas Scharfe, Rainer Golchert, Helmut Mangold
Patented Case
View Patent ↗
Granted: Feb 24, 2004
Filed: Nov 18, 2002
Inventors
Thomas Scharfe
Rainer Golchert
Helmut Mangold
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.