Charge tags and the separation of nucleic acid molecules
CA 2436746 C · Owner: Wayland, Sarah R. · Inventors: Takova, Tsetska; Wayland, Sarah R.; Skrzpczynski, Zbigniew
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to novel phosphoramidites including positive , and neutrally charged compounds. The present invention also provides charge tags for attachment to materials including solid supports and nucleic acids wherein the charge tags increase or decrease the net charge of the material. The present invention further provides methods for separating and characterizing molecules based on the charge differentials between modified and unmodified materials.
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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 February 6, 2002 and granted April 16, 2013. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 6, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 6, 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.