Granted Patent
Utility
US 4,643,917 · App. 06/663,386
Heat-sensitive transfer recording medium
Inventors:
Kunihiro Koshizuka, Shigehiro Kitamura, Takao Abe, Masaki Nakamura, Fumio Ishii, Yuji Hotta
Patented Case
View Patent ↗
Granted: Feb 17, 1987
Filed: Oct 22, 1984
Inventors
Kunihiro Koshizuka
Shigehiro Kitamura
Takao Abe
Masaki Nakamura
Fumio Ishii
Yuji Hotta
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.