Detergent compositions containing subtilisin mutants
CA 2049084 A1 · Owner: Siuta-Mangano, Patricia · Inventors: Kaiserman, Howard B.; Siuta-Mangano, Patricia
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The subject invention relates to mutant subtilisin proteases having substitution in at least 1 amino acid residue and to their use in structured detergent compositions in view of the enhanced stability they provide. In one embodiment of the invention, the enhanced enzyme stability in structured liquids comprising a decoupling polymer is shown and in a second embodiment, the enhanced stability of the mutant enzyme in a structured liquid comprising perborate is shown. None of these effects would have been predicted in advance.
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 August 13, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 13, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 13, 2013.
- 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.