Granted Patent
Utility
US 6,090,164 · App. 09/310,226
Mixture of water-soluble fiber-reactive azo dyes, preparation thereof and use thereof
Inventors:
Joachim Steckelberg, Ronald Pedemonte
Patented Case
View Patent ↗
Granted: Jul 18, 2000
Filed: May 12, 1999
Inventors
Joachim Steckelberg
Ronald Pedemonte
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.