Stable liquid enzyme concentrate and process for its production
CA 2005140 A1 · Owner: Enzyme Bio-Systems Ltd. · Inventors: Brumm, Phillip J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for preparing a stable liquid enzyme concentrate containing the alpha-amylase from Bacillus stearothermophilus. A commercial alpha-amylase enzyme preparation is treated with granular starch to adsorb the enzyme, and the starch containing the enzyme is separated and then heated in a buffer solution containing calcium ion. The resulting solution, separated from insoluble solid is then, concentrated to give the final product.
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 11, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 11, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 11, 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.
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.