Granted Patent
Utility
US 5,225,544 · App. 07/975,429
Fiber reactive dyes which contain a cyanoaminotriazinyl group and one or two groups of the vinyl sulfone series
Inventors:
Jorg Dannheim, Werner Russ
Patented Case
View Patent ↗
Granted: Jul 6, 1993
Filed: Nov 12, 1992
Inventors
Jorg Dannheim
Werner Russ
Assignee (at issue)
Hoechst GmbH
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.