Granted Patent
Utility
US 4,414,259 · App. 06/392,809
Heat-sensitive record material
Inventors:
Hiroshi Tsuchiya, Hitoshi Yamahira, Takeshi Murakami
Patented Case
View Patent ↗
Granted: Nov 8, 1983
Filed: Jun 28, 1982
Inventors
Hiroshi Tsuchiya
Hitoshi Yamahira
Takeshi Murakami
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.