Granted Patent
Utility
US 5,910,624 · App. 08/919,005
Disperse dyestuff mixtures
Inventors:
Klaus-Wilfried Wanken, Karl Buhler
Patented Case
View Patent ↗
Granted: Jun 8, 1999
Filed: Aug 27, 1997
Inventors
Klaus-Wilfried Wanken
Karl Buhler
Assignee (at issue)
DyStar Textilfarben GmbH & Co. Deutschland KG
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.