High capacity and high efficiency filter deck assembly system and method of use and replacement
CA 2489532 C · Owner: Grace, Todd S. · Inventors: Grace, Todd S.; Gottberg, Joseph A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A rotary drum filter has a plurality of longitudinally extending division grids mounted about the outer circumference of a drum. The corrugated sheets are provided, with the leading and trailing edges of each sheet mounted to circumferentially adjacent pairs of division grids to define filtrate , compartments with an equivalent number of perforated filter plates. Each filter plate is attached to the top of a corrugated sheet and has a leading edge , and a trailing edge that are set back from the leading edge and trailing edge. A seal clip is positioned near the leading edge of each corrugated sheet. A seal member(s) is/are held in place by the seal clip and is/are positioned at the …
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 December 8, 2004 and granted March 27, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 8, 2024.
- Certificates of supplementary protection extend only drug patents, and it isn't classified as one.
- 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.