Granted Patent
Utility
US 5,869,628 · App. 08/918,883
Disperse dyes
Inventors:
Paul Herzig, Antoine Clement
Patented Case
View Patent ↗
Granted: Feb 9, 1999
Filed: Aug 26, 1997
Inventors
Paul Herzig
Antoine Clement
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.