Copolymer, and adsorbent or concentrating medium and needle for solid phase microextraction prepared using the copolymer
CA 2445211 C · Owner: Matsuura, Hisashi · Inventors: Matsuura, Hisashi; Wada, Hiroo; Jinno, Kiyokatsu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a copolymer of methacrylic acid and ethylene glycol dimethacrylate which does not have any specificity to general organic solvents can thus adsorb wide variety of the organic solvents shows almost no desorption-adsorption hysteresis and therefore is excellent in the desorption characteristics. It also provides a method for the preparation of the copolymer; an adsorbent or a concentrating medium comprising the copolymer; a loop used in an injector for chromatography which is packed with the adsorbent or concentrating medium; a needle for solid-phase microextraction (SPME) which is packed with the adsorbent or concentrating medium; a kit for the preparation of a sample …
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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 October 16, 2003 and granted April 26, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 16, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 16, 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.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.