Granted Patent
Utility
US 4,731,353 · App. 07/013,781
Heat-sensitive recording material
Inventors:
Fumio Hama, Nobuo Kanda, Mitsuru Kondo
Patented Case
View Patent ↗
Granted: Mar 15, 1988
Filed: Feb 12, 1987
Inventors
Fumio Hama
Nobuo Kanda
Mitsuru Kondo
Assignee (at issue)
Kanzaki Paper Manufacturing 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.