Granted Patent
Utility
US 4,734,101 · App. 06/946,964
Red benzothiazole monoazo dye for polyester fiber, mixed dye containing the same, and method of dyeing polyester fiber using the same
Inventors:
Kiyoshi Himeno, Junji Yoshihara, Masateru Ishida
Patented Case
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Granted: Mar 29, 1988
Filed: Dec 29, 1986
Inventors
Kiyoshi Himeno
Junji Yoshihara
Masateru Ishida
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.