Neuraminidase
CA 1102724 A · Owner: Research Corporation · Inventors: Flashner, Michael; Tanenbaum, Stuart W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Extracellular neuraminidase (NANAase) is produced by the microorganism Arthrobacter sialophilum sp. nov. The enzyme is included from this microorganism by a variety of glycoproteins. The preferred enzyme inducer is a hot water extract of edible bird s nest which has been mildly acidtreated. The microorganisms, after aerobic growth in complete medium of relatively simple composition are har-, vested, washed, salt-shocked and induced in mineral salts, solution which leads to facile enzyme induction. The produced NANAase is purified by ammonium sulfate fractionation DEAE, cellulose chromatography, gel filtration and ultrafiltration. The enzyme can further be readily crystallized from …
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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
- Granted June 9, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 9, 1998.
- 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.