Microstrainer filter deck panel
CA 2079405 A1 · Owner: Dorr-Oliver Incorporated · Inventors: Pietzsch, Kurt E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
02288-238 AGS:jy, ABSTRACT, The present invention relates to a screening device with a screening cartridge that consists of a cartridge frame and a flexible web of filter material. that is stretched in the frame. In order to create a screening device in which both the screening cartridges as a whole as well as the filter cloth or the webs of filter material alone can be replaced very quickly and simply the present invention proposes that the frame incorporate a groove that runs parallel to its periphery the web of filter, material being installed in the groove and held in place by means of a cord of elastic rubber material that is additionally installed in the groove.
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 September 29, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 29, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 29, 2014.
- 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.