Granted Patent
Utility
US 4,985,393 · App. 07/448,419
Heat sensitive recording material
Inventors:
Fumio Seyama, Tetsuo Tsuchida, Mitsuru Kondo
Patented Case
View Patent ↗
Granted: Jan 15, 1991
Filed: Dec 11, 1989
Inventors
Fumio Seyama
Tetsuo Tsuchida
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.