Process for producing/secreting a protein by a transformed mould using expression/secretion regulating regions derived from an aspergillus endoxylanase ii gene
CA 2123416 C · Owner: Van Den Hondel, Cornelis A. M. J. J. · Inventors: Gouka, Robertus J.; Musters, Wouter; Stam, Hein
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Methods are described for the isolation and characterization of DNA sequences from Aspergillus niger var. awamori, which are involved in the expression and secretion of endoxylanase II (ex1A) by said Aspergillus mould. A process using these expression and/or secretion regulating regions to direct the production and optionally the secretion of proteins other than endoxylanase II by transformed moulds is provided.
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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 9, 1992 and granted May 20, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 9, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 9, 2014.
- 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
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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.