Protease, reverse transcriptase and endonuclease of retrovirus, and method for producing these enzymes
CA 2004646 C · Owner: Shinagawa, Hideo · Inventors: Shinagawa, Hideo; Saito, Atsusi; Nakata, Atsuo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Disclosed is a method for producing retroviral proteins which are protease, reverse transcriptase endounuclease and Gag, proteins. The method is characterized by the consecutive accomplishment of expression and processing of retroviral genes and these products under the stepwise cultivation of hosts transformed with a vector constructed to carry retroviral gene fragments comprising at least a protease gene and one or more of the other genes coding for retroviral proteins. The retroviral proteins of this invention is used as specific reagens for the diagnosis of retroviral disease, e.g. AIDS malignant tumors, and so forth, also may be used as the basis for research and development of …
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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 5, 1989 and granted October 5, 1999. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 5, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 5, 2011.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.