Heat transfer sheet
CA 1338922 C · Owner: Dai Nippon Insatsu Kabushiki Kaisha · Inventors: Kanto, Jumpei; Saito, Hitoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is a heat transfer sheet comprising a substrate sheet and a dye carrying layer formed on one surface of said substrate sheet characterized in that, the dye included in said dye carrying layer is represented by the following formula (I):, (I), wherein each of X1 and X2 represents hydrogen an alkyl, group, alkoxy group, acylamino group aminocarbonyl group or, a halogen; R1 represents a substituent selected from hydrogen, one or more alkyl groups, alkoxy groups halogens, hydroxyl groups, amino groups alkylamino groups, acylamino, groups, sulfonylamino groups aryl groups, arylalkyl groups, or nitro groups; R4 represents a substituent selected from one or more alkyl groups, …
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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 February 25, 1997. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 25, 2014.
- 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.