Granted Patent
Utility
US 4,840,870 · App. 07/170,063
Heat-transfer image-receiving element
Inventors:
Masaru Iwagaki, Toyoaki Masukawa, Tawara Komamura, Wataru Ishikawa, Kimie Hoshino
Patented Case
View Patent ↗
Granted: Jun 20, 1989
Filed: Mar 14, 1988
Inventors
Masaru Iwagaki
Toyoaki Masukawa
Tawara Komamura
Wataru Ishikawa
Kimie Hoshino
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.