Granted Patent
Utility
US 6,179,908 · App. 09/173,374
Iron oxide red pigments, process for the production of iron oxide red pigments and use thereof
Inventors:
Rolf Braun, Eckhard Bayer, Ulrich Meisen
Patented Case
View Patent ↗
Granted: Jan 30, 2001
Filed: Oct 15, 1998
Inventors
Rolf Braun
Eckhard Bayer
Ulrich Meisen
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.