Granted Patent
Utility
US 5,387,686 · App. 08/166,061
Dye for heat-sensitive transfer record and ink composition for heat-sensitive transfer record
Inventors:
Tsukasa Ohyama, Yasushi Shimokawa, Yoriaki Matsuzaki, Keisuke Takuma, Isamu Ghoda, Hitoshi Koshida, Ryohei Takiguchi, Hiroshi Eguchi, Komei Kafuku, Masayuki Nakamura
Patented Case
View Patent ↗
Granted: Feb 7, 1995
Filed: Dec 14, 1993
Inventors
Tsukasa Ohyama
Yasushi Shimokawa
Yoriaki Matsuzaki
Keisuke Takuma
Isamu Ghoda
Hitoshi Koshida
Ryohei Takiguchi
Hiroshi Eguchi
Komei Kafuku
Masayuki Nakamura
Assignees (at issue)
Mitsui Toatsu Chemicals, Incorporated
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.