Granted Patent
Utility
US 4,771,033 · App. 07/070,067
Heat-sensitive record material
Inventors:
Yoshihiro Shimizu, Naoto Arai
Patented Case
View Patent ↗
Granted: Sep 13, 1988
Filed: Jul 6, 1987
Inventors
Yoshihiro Shimizu
Naoto Arai
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.