Expired Canadian patentCanada
Hydrated zirconium silicate composition for purification of nucleic acids
CA 2214495 C · Owner: Becton, Dickinson And Company · Inventors: Woodard, Daniel L.
Overview
Drawings and full text
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a unique hydrated zirconium silicate composition which binds nucleic acids. The composition is useful in processes for purifying nucleic acid from a sample.
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 September 3, 1997 and granted February 5, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 3, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 3, 2019.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 3, 1997
GrantedFebruary 5, 2002
Term endedSeptember 3, 2017
Patent numberCA 2214495 C
Classification (IPC)C12N15/10 +2 more
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.