Filter element, filter, and method for removing odors from indoor air
CA 1259295 A · Owner: General Time Corporation · Inventors: Frazier, Stephen E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An air filter element for removing odors from indoor air having a dry mixture of silica gel activated, carbon, and zeolite. This dry mixture may also be impregnated with a liquid for inhibiting the growth of microorganisms, the liquid comprising a fungicide/ bacteriocide preservative and a polyhydric alcohol or a, grapefruit pulp/polyhydric alcohol reaction product. Also disclosed are novel air filters comprising these air filter elements and a material for removing particulate matter from indoor air.
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
- Granted September 12, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 12, 2006.
- 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.