Extraction of carotenoproteins from crustacean wastes
CA 1313835 C · Owner: Simpson, Benjamin Kofi · Inventors: Haard, Norman F; Simpson, Benjamin Kofi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process is provided for the extraction of carotenoproteins from crustacean wastes. The process comprises the steps of (a) homogenizing the crustacean waste in water to form a homogenizate; (b) treating the homogenizate with at least 0.1% w/w based on the crustacean waste of a proteolyte enzyme selected from the group consisting of animal-derived trypsin and a bacterial protease, at a temperature of 0°C to 50°C for from 1 to 24 hours; and (c) separating an aqueous solution of carotenoproteins therefrom, the carotenoproteins being substantially free of chitin and ash. Such carotenoproteins may be used as a tissue colorant feed supplement.
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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 February 23, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 23, 2010.
- 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.