System for suspending a free-hanging covering for an architectural opening
CA 2518346 C · Owner: Smith, Stephen P. · Inventors: Drew, Terrence M.; Smith, Stephen P.; Miller, James L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A system for suspending a free-hanging shade material in an architectural opening includes a panel of shade material and brackets that can be mounted to the top edge of the framework around the architectural opening even when the top edge is not straight or horizontally disposed. The top edge of the panel has reinforcement strips operatively connected thereto which are releasably connected to the brackets. The system is useful in conventional rectangular architectural openings or openings of unusual shapes and sizes such as semi-circular or having an inclined top edge.
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 6, 2005 and granted April 3, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 6, 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.