Preparation exhibiting enzymatic delignification activity, a method of producing the same, and applications thereof
CA 2073436 A1 · Owner: Shoham, Yuval · Inventors: Rosenberg, Eugene; Shoham, Yuval
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A preparation exhibiting enzymatic activity and having the capability of delignifying wood pulp at a temperature of at least 65 ·C and a pH of at least 9, is described. Said preparation is obtainable by aerobic fermentation of a Bacillus stearothermophilus strain selected from the deposited strains NCIMB 40221 and NCIMB 40222 and mutants and variants thereof. Also the deposited, strains NCIMB 40221 and NCIMB 40222 and mutants and variants thereof are comprised by the invention. Further a method of producing, said preparation and a process comprising treatment of wood pulp with said preparation, are disclosed. Moreover the invention, comprises applications of said preparation as wood pulp …
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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 28, 1990. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 28, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 28, 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.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.