Granted Patent
Utility
US 4,236,732 · App. 05/841,396
Heat-sensitive record material
Inventors:
Takeshi Murakami, Yoshitaka Oeda, Hiroo Hayashi, Teruo Nakamura
Patented Case
View Patent ↗
Granted: Dec 2, 1980
Filed: Oct 12, 1977
Inventors
Takeshi Murakami
Yoshitaka Oeda
Hiroo Hayashi
Teruo Nakamura
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.