Granted Patent
Utility
US 5,844,101 · App. 08/933,193
Light-fast disazo dyestuffs
Inventor:
Klaus Kunde
Patented Case
View Patent ↗
Granted: Dec 1, 1998
Filed: Sep 17, 1997
Inventor
Klaus Kunde
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.