Granted Patent
Utility
US 4,399,188 · App. 06/278,747
Heat-sensitive recording sheet
Inventors:
Noboru Yamato, Tosimi Satake
Patented Case
View Patent ↗
Granted: Aug 16, 1983
Filed: Jun 29, 1981
Inventors
Noboru Yamato
Tosimi Satake
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.