Dna isolation method
CA 2097254 A1 · Owner: Pioneer Hi-Bred International, Inc. · Inventors: Jhingan, Anil K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A novel method for the isolation of high molecular weight DNA from plants, yeast bacteria and animal cells, or tissue employs xanthate forming compounds such as, sodium/potassium ethyl xanthogenate. The procedure does not require deproteination and yields clean DNA that is suitable for both PCR and Southern blotting. It can be utilized on a small scale without homogenizing the tissue. These features also facilitate automated screening of tissue samples, one of the labor-intensive techniques in molecular biology.
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 May 28, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 28, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 28, 2015.
- 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.