Cold-active protease cp70
CA 2243598 C · Owner: Tamiya, Eiichi · Inventors: Tamiya, Eiichi; Hasan, Abul Khaer Mohamad Quamrul
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A psychrophilic protease is here disclosed which has the following physicochemical properties: (a) specific activity and substrate specificity: the protease acts on casein, gelatin, hemoglobin and albumin to specifically decompose them in the order of casein, gelatin hemoglobin and albumin; (b) , optimal pH: 8.0; (c) pH stability: the protease is stable at a pH in the range of 6.5 to 10.0 at 30 ~C for 1 hour; (d) optimal temperature: about 40 ~C; (e) temperature stability: at pH 7 for 1 hour the protease is scarcely , inactivated at a temperature up to 30 ~C but it is inactivated at 40 ~C as , much as about 40 % and completely inactivated at 50 ~C in about 10 minutes; (f) enzyme …
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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 January 24, 1997 and granted October 22, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 24, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 24, 2019.
- 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.