Tyrosinase-activator protein fusion enzyme
CA 2176236 C · Owner: Della-Cioppa, Guy · Inventors: Della-Cioppa, Guy; Kumagai, Monto H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a nucleic acid sequence encoding a fusion enzyme comprising a nucleic acid sequence encoding for a tyrosinase and a nucleic acid sequence encoding for a tyrosinase activator protein. Activator proteins used in the present invention are ORF438 and URF402. Prokaryotic tyrosinases that require a separate activator protein particularly tyrosinases derived from Streptomyces are preferred. It is also preferred that the activator protein sequence be positioned (5') relative to the tyrosinase sequence. The present invention also relates to a fusion enzyme which comprises an amino acid sequence for tyrosinase and an amino acid sequence for a tyrosinase activator …
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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 November 8, 1994 and granted October 16, 2001. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 8, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 8, 2016.
- 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.