Self-cleaning pet litter box assembly
CA 2554449 C · Owner: Emery, Richard H. · Inventors: Emery, Richard H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A self-cleaning pet litter box (10) has a conveyor (20) to incrementally transport clumped litter material and solid pet waste to a waste receptacle (22). The conveyor (20) has one end configured to extend into a pet litter container (14) of the self-cleaning litter box (10) and an opposite exit end (32). The conveyor (20) is configured for reciprocating movement to lift the clumped litter material and solid pet waste from below transport it some , distance along the conveyor (20) place the material down again, return to its original position, and repeat the motion again to incrementally move the material along the conveyor (20) toward the exit end (32) for subsequent disposal.
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 February 8, 2005 and granted April 2, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 8, 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.