Thermosensitive recording material having recording layer containing fluorescent dye
CA 1267282 C · Owner: Ricoh Company, Ltd. · Inventors: Walter, Philip G.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A thermosensitive recording material having a fluorescent color comprising a support a thermosensitive, recording layer formed on one side of the support the, thermosensitive recording layer comprising (i) a thermosensitive recording system capable of producing color upon application of heat thereto and (ii) a colored fluorescent dye composition by which the recording material has high recognition ability; and optionally an adhesive layer formed on the opposite side of the support.
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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 April 3, 1990. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 3, 2007.
- 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.