Granted Patent
Utility
US 5,936,072 · App. 09/041,183
Reactive dyes, their preparation and use
Inventors:
Athanassios Tzikas, Herbert Klier
Patented Case
View Patent ↗
Granted: Aug 10, 1999
Filed: Mar 12, 1998
Inventors
Athanassios Tzikas
Herbert Klier
Assignee (at issue)
Ciba Specialty Chemicals Corporation
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.