Triggered message delivery system
CA 1318957 C · Owner: Verge, Clarence A. · Inventors: Verge, Clarence A.; Lam, Frank
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Supermarket point of purchase advertising typically consists of advertisements, brochures, coupons and the like disposed on shelving units. To attract prospective purchasers to such advertising and to constitute point of purchase advertising itself, there is disclosed a shelf-edge mounted device which senses an approaching shopper and then delivers an audio message. The device has an optical sensor which is pointed underneath a shelf and towards the interior of the shelving unit, and detects the shadow of the approaching shopper cast on the back of the shelving unit. A background plate in the field of view of the sensor improves its sensitivity.
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 8, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 8, 2010.
- 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.