Security document with electrically-controlled display element
CA 2580332 C · Owner: Schilling, Andreas · Inventors: Schilling, Andreas; Peters, John Anthony; Tompkin, Wayne Robert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention concerns a security document (1) comprising a flexible carrier (10) and a multi-layer flexible film body (2) which is applied to the flexible carrier and which provides one or more optical security features. The flexible multi-layer film body (2) has an electrically controlled display element for generating an optical security feature with associated electrical current source for operation of the display element in combination with an optically active diffractive structure.
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
- Filed September 15, 2005 and granted July 2, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 15, 2025.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.