Burdoin tubing in degassing and pulsation dampener application
CA 2392951 A1 · Owner: Sims, Carl W. · Inventors: Gerner, Yuri; Thielen, Thomas J.; Sims, Carl W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A flow-dampening degassing apparatus for transport of liquid chromatography fluids therethrough includes a substantially burdoin-shaped flexible tube disposed in a reduced-pressure chamber, the tube being sufficiently flexible to expand in a cross-sectional direction upon incursion of a fluid pulsation to thereby increase an inner volume of the tube and correspondingly reduce fluid pressure therein. In a particular embodiment the tube, is fabricated from a gas-permeable and liquid-impermeable material for degassing transported fluids in the reducedpressure chamber.
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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
- Filed July 10, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 10, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 10, 2024.
- 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.