Granted Patent
Utility
US 4,500,455 · App. 06/400,533
Reactive disperse diaminopyridine azo dyes containing a fluorostriazine group
Inventors:
Toshio Niwa, Toshio Hihara, Yukiharu Shimizu
Patented Case
View Patent ↗
Granted: Feb 19, 1985
Filed: Jul 21, 1982
Inventors
Toshio Niwa
Toshio Hihara
Yukiharu Shimizu
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.