Granted Patent
Utility
US 6,596,073 · App. 09/890,886
Solid pigment preparations
Inventors:
Peter-Roger Nyssen, Josef Witt
Patented Case
View Patent ↗
Granted: Jul 22, 2003
Filed: Aug 6, 2001
Inventors
Peter-Roger Nyssen
Josef Witt
Assignee (at issue)
Bayer Aktiengesellschaft
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.