Granted Patent
Utility
US 6,281,338 · App. 09/665,506
Mono- and dipotassium salts of azo compounds
Inventors:
Richard Sommer, Frank Linke, Udo Herrmann
Patented Case
View Patent ↗
Granted: Aug 28, 2001
Filed: Sep 19, 2000
Inventors
Richard Sommer
Frank Linke
Udo Herrmann
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.