Granted Patent
Utility
US 4,400,437 · App. 06/368,418
Thermal recording paper
Inventor:
Yoshitaka Oeda
Patented Case
View Patent ↗
Granted: Aug 23, 1983
Filed: Apr 14, 1982
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.