High temperature reverse transcriptases
CA 2071213 C · Owner: Hoffmann-La Roche (F.) Ag · Inventors: Gelfand, David H.; Myers, Thomas W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Methods are provided for the replication and amplification of RNA sequences by thermoactive DNA polymerases. , Reverse transcription of RNA is catalyzed by for example, 94 kDa TaQ, 62 kDa-, Taq, nTth and recombinant Tth DNA polymerase. Reverse Transcription is coupled to PCR amplification in a one enzyme procedure using a thermostable polymerase.
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 December 21, 1990 and granted May 2, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 21, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 21, 2012.
- 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.