Rf point of sale and delivery method and system using communication with remote computer and having features to read a large number of rf tags
CA 2474183 A1 · Owner: Linton, John · Inventors: Dearing, Michael; Vidugiris, Gediminas; Linton, William A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method and system for providing point-of-sale and point-of-delivery and/or distribution of products in a restricted access unit near the customer. The method and system utilize products equipped with radio frequency tags and reduce the effects of energy sharing, shadowing and s. In one embodiment, a plurality of RF tagged products are placed within a refrigerator cabinet, or other micro-warehouse that has a door or opening that can detect access to the micro-warehouse. In one embodiment one or more antennas are positioned , within the door. Each antenna may have a transmission line of sight and be configured to emit a signal at predefined frequencies. Each antenna generates an …
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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
- Filed February 18, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 18, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 18, 2025.
- 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.