Granted Patent
Utility
US 4,473,499 · App. 06/400,201
Reactive disazo dyes containing an oxy fluoro triazine group for cellulose containing fibers
Inventors:
Toshio Niwa, Toshio Hihara
Patented Case
View Patent ↗
Granted: Sep 25, 1984
Filed: Jul 20, 1982
Inventors
Toshio Niwa
Toshio Hihara
Assignee (at issue)
Mitsubishi Chemical Industries, Ltd.
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.