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Expired Canadian patentCanada

Subtilase enzymes of the i-s1 and i-s2 sub-groups having an additional amino acid residue in an active site loop region

CA 2355655 C · Owner: Novozymes A/S · Inventors: Andersen Vilbour, Kim; Andersen, Carsten; Norregaard-Madsen, Mads

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Abstract From the Canadian patent

Subtilase enzymes of the I-S1 and I-S2 sub-groups having an additional amino acid residue in position 96 of the active site loop (b) region from position 95 to 103. Variant subtilases exhibit improved wash performance in a detergent in comparison to its parent 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 December 20, 1999 and granted March 15, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended December 20, 2019.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 20, 2021.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledDecember 20, 1999
GrantedMarch 15, 2011
Term endedDecember 20, 2019
Patent numberCA 2355655 C
Classification (IPC)C12N9/54 +1 more

Timeline

Timeline From CIPO dates

2000200220042006200820102012201420162018Application filedDec 20, 1999Patent grantedMarch 15, 2011Term endedDec 20, 2019

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.