Carbon adsorbent, manufacturing method therefor,gas seperation method and device therefor
CA 2193949 C · Owner: Miyake, Hiroyuki · Inventors: Inui, Takashi; Nakamura, Fusao; Ohsaki, Takushi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An adsorbent for nitrogen separation comprising molecular-sieve carbon prepared by the halogenation dehalogenation followed by micropore adjustment of carbonized coal. The adsorbent can increase the quantity of nitrogen generated per unit quantity thereof, enhance the nitrogen yield, and reduce the nitrogen production cost. An adsorbent for carbon dioxide or methane comprising activated carbon prepared by the halogenation, dehalogenation followed by activation of carbonized coal can adsorb the gas in an increase quantity.
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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 April 26, 1996 and granted November 16, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 26, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 26, 2018.
- 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.