Granted Patent
Utility
US 5,358,536 · App. 07/921,805
Dyestuff for heat-sensitive transfer record and transfer sheet containing same
Inventors:
Hitoshi Koshida, Isamu Ghoda, Tsukasa Ohyama, Keisuke Takuma
Patented Case
View Patent ↗
Granted: Oct 25, 1994
Filed: Jul 31, 1992
Inventors
Hitoshi Koshida
Isamu Ghoda
Tsukasa Ohyama
Keisuke Takuma
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.