Filtration devices
CA 1192846 A · Owner: Societe L. Choquenet (S.A.) · Inventors: Choquenet, Pierre; Carles, Jean C.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Filtration device of the kind comprising a rotary drum, a first continuous filter cloth surrounding a first angular sector of the drum and separated from it in a second angular sector, a series of cellular elements surrounding the said first sector. Each cellular element comprises a cell whose bottom has grooves in communication with a discharge orifice for clear liquid and lateral injection tube for impelling a charged liquid which is to be filtered abreast of each cell. The device further has a second continuous filter cloth also surrounding the first sector and separated from the drum in the second angular sector the outer surface of the drum comprising abreast of each of the cells, a …
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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 September 3, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 3, 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.