Granted Patent
Utility
US 4,698,646 · App. 07/004,285
Thermal transfer recording system
Inventors:
Tsuyoshi Satoh, Tsutomu Mitsuishi, Kenji Toyoda, Kaoru Naito, Makoto Ogawa, Hiroshi Sato
Patented Case
View Patent ↗
Granted: Oct 6, 1987
Filed: Jan 6, 1987
Inventors
Tsuyoshi Satoh
Tsutomu Mitsuishi
Kenji Toyoda
Kaoru Naito
Makoto Ogawa
Hiroshi Sato
Assignee (at issue)
Nippon Kogaku K.K.
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.