Serine protease variants having amino acid deletions and substitutions
CA 2324422 A1 · Owner: Rubingh, Donn Nelton · Inventors: Correa, Paul Elliott; Sikorski, Elizabeth Ellen; Rubingh, Donn Nelton
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 variants of serine proteases having decreased immunogenicity relative to their corresponding wild-type proteases. More particularly, the present invention relates to variants having a modified amino acid sequence of a wild-type amino acid sequence wherein the modified , amino acid sequence comprises a deletion and optionally, a substitution of , one or more specifically identified positions corresponding to subtilisin BPN'. The invention further relates to mutant genes encoding such variants and cleaning and personal care compositions comprising such variants.
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 March 25, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended March 25, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by March 25, 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.
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.