Rate-enhanced gas separation
CA 2322197 A1 · Owner: Leavitt, Frederick Wells · Inventors: Leavitt, Frederick Wells; Ackley, Mark William
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention is based upon the recognition that intrinsic sorption rates of adsorbent materials have a significant impact upon process performance. In a preferred embodiment an adsorption process uses an adsorbent zone comprising an adsorbent selected from the group consisting of: A-zeolite Y-zeolite, NaX, mixed cation X-zeolite LiX having a Sio2/A12O3 silica/alumina ratio of less than 3.0, chabazite, mordenite, clinoptilolite silica-alumina, alumina, silica, titanium silicates and mixtures thereof wherein said adsorbent has a , mass transfer coefficient for nitrogen of kN2 12 s-1 and an intrinsic diffusivity for N2, when measured at 1.5 bar and 300K of Dp 3.5 x 10-6 m2/s. , Other …
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 February 26, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 26, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 26, 2021.
- 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.