Granted Patent
Utility
US 5,959,005 · App. 08/843,207
Silanized silica
Inventors:
Werner Hartmann, Juergen Meyer, Hauke Jacobsen, Thomas Hennig, Henning Karbe, Uwe Schachtely
Patented Case
View Patent ↗
Granted: Sep 28, 1999
Filed: Apr 14, 1997
Inventors
Werner Hartmann
Juergen Meyer
Hauke Jacobsen
Thomas Hennig
Henning Karbe
Uwe Schachtely
Assignee (at issue)
Degussa-Huels 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.