Heat transfer sheet
CA 1284881 C · Owner: Kutsukake, Masaki · Inventors: Nakamura, Masayuki; Nishitani, Nobuhisa; Saitom Hitoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A heat transfer sheet to be used for heat-sensitive transfer, comprising a substrate sheet and a dye layer formed on said substrate sheet, said dye layer being constituted of a layer containing a yellow dye a cyan, dye, and a magenta dye comprising a specific compound having phenylene-diamine or its derivative as the developer.
Read the whole patent
Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted June 18, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 18, 2008.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.