Method for determining hydrocarbon saturation of carbon filters in a gas treatment process
CA 2369367 A1 · Owner: Mobil Oil Corporation · Inventors: Walters, Clifford C.; Hellyer, Constance L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A method for determining the efficiency of a carbon filter (21) used to absorb hydrocarbons from organic solvents. A sample of the solution used to remove , CO2 and H2S from natural hydrocarbon gases is taken after it has passed , through the carbon filter at sample point (A). A solution of an internal standard and carbon disulfide is added to the sample to concentrate the hydrocarbons into the solution. A second sample is taken from the solution containing the concentrated hydrocarbons and is passed through a gas chromatograph which has a fast temperature ramp to measure the peak areas of the hydrocarbons and the internal standard. The concentration of the measured hydrocarbons are …
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 8, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 8, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 8, 2022.
- 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.