Granted Patent
Utility
US 4,381,946 · App. 06/237,605
Ink composition for ink-jet recording
Inventors:
Masafumi Uehara, Mitsuyoshi Itano
Patented Case
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Granted: May 3, 1983
Filed: Feb 24, 1981
Inventors
Masafumi Uehara
Mitsuyoshi Itano
Assignee (at issue)
Konishiroku Photo Industry Co., 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.