Granted Patent
Utility
US 5,296,445 · App. 07/924,874
Dye for heat-sensitive transfer record, ink composition for heat-sensitive transfer record, and transfer sheet
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: Mar 22, 1994
Filed: Aug 5, 1992
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.