Solid phase extraction purification of dna
CA 2067711 C · Owner: Becton, Dickinson And Company · Inventors: Woodard, Daniel Lee
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a method for purifying DNA from any source in any form. The method comprises the use of water soluble organic solvents when purifying DNA. By using water soluble organic solvents such as ethanol propanol, and, isopropanol, DNA is purified with greater recovery amounts. In addition, the use of water soluble organic solvents eliminates the use of caustic and poisonous compositions such as chaotropes.
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 April 30, 1992 and granted August 8, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended April 30, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 30, 2014.
- 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.