Granted Patent
Utility
US 5,569,540 · App. 08/262,064
Thermal transfer sheet
Inventors:
Keiji Hirose, Keiichi Ogawa
Patented Case
View Patent ↗
Granted: Oct 29, 1996
Filed: Jun 17, 1994
Inventors
Keiji Hirose
Keiichi Ogawa
Assignee (at issue)
Dai Nippon Printing 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.