Granted Patent
Utility
US 5,132,272 · App. 07/648,268
Heat sensitive recording material
Inventors:
Katsuaki Yoshizawa, Ritsuo Mandoh, Yukio Takayama
Patented Case
View Patent ↗
Granted: Jul 21, 1992
Filed: Jan 30, 1991
Inventors
Katsuaki Yoshizawa
Ritsuo Mandoh
Yukio Takayama
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.