Granted Patent
Utility
US 5,296,162 · App. 07/846,796
Near infrared absorbers and display/recording materials using the same
Inventors:
Hisao Itoh, Katashi Enomoto, Takahisa Oguchi, Tutomu Nishizawa
Patented Case
View Patent ↗
Granted: Mar 22, 1994
Filed: Mar 2, 1992
Inventors
Hisao 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.