Granted Patent
Utility
US 5,124,306 · App. 07/540,623
Heat-sensitive recording material
Inventors:
Tooru Yamamoto, Yoshihiro Shimizu, Toshio Kimura
Patented Case
View Patent ↗
Granted: Jun 23, 1992
Filed: Jun 19, 1990
Inventors
Tooru Yamamoto
Yoshihiro Shimizu
Toshio Kimura
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.