Granted Patent
Utility
US 4,948,775 · App. 07/232,794
Heat-sensitive record material
Inventors:
Takuji Tsuji, Tomohiro Yanagida
Patented Case
View Patent ↗
Granted: Aug 14, 1990
Filed: Aug 16, 1988
Inventors
Takuji Tsuji
Tomohiro Yanagida
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.