Granted Patent
Utility
US 4,484,204 · App. 06/479,991
Heat-sensitive record material
Inventors:
Tohru Yamamoto, Hironari Fujioka
Patented Case
View Patent ↗
Granted: Nov 20, 1984
Filed: Mar 29, 1983
Inventors
Tohru Yamamoto
Hironari Fujioka
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.