Process for manufacturing a sector-shaped filter element and filter element
CA 2467445 C · Owner: Scheucher, Peter · Inventors: Vidonye, Robert; Roesler, Johann; Scheucher, Peter
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a process for manufacturing a sector-shaped filter element for a disc filter from a pre-corrugated sheet (1) of metallic material preferably stainless steel. It is characterised by the sheet (1) being stretched at least at one face end (3). In addition the invention relates to a sector-shaped filter element for a disc filter made from a corrugated sheet (1) of metallic material preferably stainless steel, with one shorter (2) and one longer face end (3) with ribs (5) of the corrugated structure running from one face end (2) to the other (3) characterised by the ribs (5) radiating outwards from the shorter (2) to the longer face end (3).
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
- Filed May 17, 2004 and granted October 16, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 17, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 17, 2026.
- 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.