Filter device to capture a desired amount of material and methods of use
CA 2501042 A1 · Owner: Ferguson, Gary W. · Inventors: Ferguson, Gary W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is a filter device with methods to capture a desired amount of material suspended in a liquid or gas. These filter capture methods may be used for the purification or enrichment of various sample constituents or captured material may be observed or analyzed. Alternatively particulate , material may be used as a transport mechanism for proteins or chemicals which in turn may be assessed or used. The filter device employs means to sense pressure and thereby respond to pressure changes associated with the flow rate of sample suspension through a filter, typically responding at a predetermined pressure associated with capture of a desired amount of material on 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 September 17, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 17, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 17, 2025.
- 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.