Encapsulated liquid with wettable colorant on the microcapsule wall
CA 1302799 C · Owner: Marabella, Charles P. · Inventors: Marabella, Charles P.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
60557-3145, Abstract of the Disclosure Microcapsules having colorant on their exterior surfaces can transfer the colorant when the capsules contain liquids which wet the colorant. The microcapsules may be in a non-pressure sensitive binder secured between two sheets so that the microcapsules rupture upon separation of the sheets.
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 9, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 9, 2009.
- 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.