Granted Patent
Utility
US 5,409,634 · App. 07/805,040
Near infrared absorbers and display/recording materials using the same
Inventors:
Hisato Itoh, Katashi Enomoto, Takahisa Oguchi, Tutomu Nishizawa
Patented Case
View Patent ↗
Granted: Apr 25, 1995
Filed: Dec 11, 1991
Inventors
Hisato Itoh
Katashi Enomoto
Takahisa Oguchi
Tutomu Nishizawa
Assignees (at issue)
Mitsui Toatsu Chemicals, Incorporated
YAMAMOTO CHEMICALS, INC.
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.