Granted Patent
Utility
US 4,295,889 · App. 06/097,920
Recording liquid composition
Inventors:
Tsuyoshi Eida, Masahiro Haruta, Yasuhiro Yano, Yoji Matsufuji, Tokuya Ohta
Patented Case
View Patent ↗
Granted: Oct 20, 1981
Filed: Nov 28, 1979
Inventors
Tsuyoshi Eida
Masahiro Haruta
Yasuhiro Yano
Yoji Matsufuji
Tokuya Ohta
Assignee (at issue)
CANON KABUSHIKI KAISHA
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.