Filter media, method for oxidizing and removing soluble iron, method for removing and inactivating microorganisms and particulate filter aid
CA 1184469 A · Owner: Amf Incorporated · Inventors: Webster, Timothy J.; Hou, Kenneth C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A filter media is provided which comprises an amount of particulate immobilized in a substantially inert porous matrix. At least a portion of the particulate surface has thereon a divalent, metal peroxide. The metal peroxide is magnesium peroxide or calcium peroxide, preferably magnesium peroxide. The filter media is preferably used for oxidizing and removing soluble iron and manganese from an aqueous fluid. The filter may also be used for removing and inactivating microorganisms from fluids, e.g. aqueous fluids. Particulate filter aid having coated or adsorbed on the surface the aforementioned metal peroxide may be used as the particulate in the filter media as well as the metal, peroxide …
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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
- Granted March 26, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 26, 2002.
- 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.