Microbiological method for removing pathogenic microbes and dissolved organic materials from liquids
CA 1057866 A · Owner: Hartkorn, Karl H. · Inventors: Hartkorn, Karl H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The specification describes a method for removing pathogenic germs and dissolved organic substances from liquids. Kefir milk acid bacteria in the form of a centrifugate obtained from washing-out Kefir mould cultures are added to the liquid after suitable electrochemical precleaning. The liquid mixed with the bacteria is passed over a cylindrical column, whose filling bodies consist of cylindrically shaped fabric of antimagnetic stainless steel with a large surface. On this the microorganisms of the Kefir group are deposited and form a biological lawn. When atmospheric oxygen is supplied and the liquid is repeatedly circulated through the column, the organic liquid contaminating materials …
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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 July 3, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 3, 1996.
- 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.