Granted Patent
Utility
US 6,383,621 · App. 09/448,434
Thermal transfer image forming material
Inventors:
Shizuka Tojima, Katsumi Maejima
Patented Case
View Patent ↗
Granted: May 7, 2002
Filed: Nov 24, 1999
Inventors
Shizuka Tojima
Katsumi Maejima
Assignee (at issue)
Konica Corporation
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.