Granted Patent
Utility
US 4,818,591 · App. 06/913,323
Thermal transfer recording medium
Inventors:
Shegehiro Kitamura, Masao Asano, Yoshiaki Shimizu, Takao Abe
Patented Case
View Patent ↗
Granted: Apr 4, 1989
Filed: Sep 30, 1986
Inventors
Shegehiro Kitamura
Masao Asano
Yoshiaki Shimizu
Takao Abe
Assignee (at issue)
Konishiroku Photo Industry 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.