A passive roof vent
CA 2803775 C · Owner: Canplas Industries Ltd. · Inventors: Mantyla, James; Mckee, James H. A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A roof vent is provide. The roof vent comprises a top component coupled to a bottom component. The top component has a top wall a side wall, a first louvered region disposed between said top wall and said side wall and a top cylindrical baffle located inwardly of said first louvered region. The bottom component has at least a first cylindrical collar sized and shaped for mounting to a cylindrical exhaust stack of a first diameter a second louvered region, and a bottom cylindrical baffle located below and inwardly of the top cylindrical baffle. The first louvered and second louvered regions are for helping to prevent insects and moisture, such as snow and rain, from entering the roof vent. …
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 13, 2006 and granted September 16, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 13, 2026.
- 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.