Self-contained portable/mountable air cleaner
CA 2249690 C · Owner: Emerson Electric Co. · Inventors: Stanek, Terrence L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A portable, mountable air cleaner that is fashioned of a durable molded plastic so as to be light weight; dimensioned to fit between typical 16 inch joists in a ceiling structure; containing a dual air filtration system; fashioned and configured so that each filter may be easily removed for cleaning; and that is capable of operation either resting on the ground or while suspended from a wall or ceiling structure.
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 October 26, 1998 and granted May 22, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 26, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 26, 2020.
- 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.