Purified nucleic acid encoding a thermostable pyrophosphatase
CA 2185362 C · Owner: Wang, Alice M. · Inventors: Gelfand, David Harrow; Wang, Alice M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A DNA that encodes a thermostable pyrophosphatase (PPase) is provided. The DNA is obtained using a DNA probe consisting of SEQ ID NO: 1. Also provided are vectors comprising said DNA and host cells transformed with such a vector. The invention also provides methods for producing thermostable pyrophosphatase and methods for isolating a target DNA fragment comprising a DNA coding for a thermostable pyrophosphatase from a bacterium of the genus Thermus. The thermostable pyrophosphatase prepared in accordance with the present invention is preferably packed in a kit and can be used in a nucleic acid amplification method.
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 11, 1996 and granted February 25, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 11, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 11, 2018.
- 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.