Granted Patent
Utility
US 5,210,066 · App. 07/631,933
Heat-sensitive recording material
Inventors:
Shinziro Sakurai, Akihiro Yamazaki, Takeshi Yanagihara, Makoto Nakano, Masaya Kusumoto
Patented Case
View Patent ↗
Granted: May 11, 1993
Filed: Dec 21, 1990
Inventors
Shinziro Sakurai
Akihiro Yamazaki
Takeshi Yanagihara
Makoto Nakano
Masaya Kusumoto
Assignee (at issue)
Mitsui Toatsu Chemicals, Incorporated
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.