Granted Patent
Utility
US 4,971,942 · App. 07/298,124
Heat-sensitive recording material
Inventors:
Toshio Kaneko, Toshiaki Minami, Tadakazu Fukuchi, Fumio Fujimura
Patented Case
View Patent ↗
Granted: Nov 20, 1990
Filed: Jan 17, 1989
Inventors
Toshio Kaneko
Toshiaki Minami
Tadakazu Fukuchi
Fumio Fujimura
Assignee (at issue)
Jujo Paper 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.