Granted Patent
Utility
US 5,693,765 · App. 08/471,814
"Substituted 5-5'-(5""- Chloro-2"", 4""-difluoropyrimid-6""-ylamino) phenylcarbonylamino!-2'-sulfophenyl-azo!-6-hydroxy-4-methyl-3-sulfomethy lpyrid-2-ones"
Inventor:
Paul Doswald
Patented Case
View Patent ↗
Granted: Dec 2, 1997
Filed: Jun 6, 1995
Inventor
Paul Doswald
Assignee (at issue)
Clariant Finance (BVI) Limited
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.