Granted Patent
Utility
US 4,355,070 · App. 06/211,655
Heat-sensitive record material
Inventor:
Yoshitaka Oeda
Patented Case
View Patent ↗
Granted: Oct 19, 1982
Filed: Dec 1, 1980
Inventor
Yoshitaka Oeda
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.