Activated carbon mesh network filter structure
CA 2339077 A1 · Owner: Stackhouse, Inc. · Inventors: Mellette, Gary W.; Acosta, Aristides
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A filter structure for use within a filter system for capturing airborne contaminants and adsorbing odor. The filter structure includes a filtration medium of activated carbon fibers spun into an activated carbon mesh network filter for adsorbing airborne odors such as those transported by smoke and for capturing extremely small airborne particulate. A preferred filter structure includes, in order, a macro filter for capturing larger airborne particulate, an ULPA filter for capturing smaller airborne particulate, and an activated carbon mesh network filter formed of activated carbon fibers spun into a fiber mesh for adsorbing airborne odors and for capturing extremely small airborne …
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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 March 2, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 2, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 2, 2023.
- 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.