Bleaching enzymes and detergent compositions comprising them
CA 2354908 A1 · Owner: Berry, Mark John · Inventors: Berry, Mark John; Gidley, Michael John; Van Der Logt, Cornelis Paul Erik
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is provided a bleaching enzyme capable of generating a bleaching chemical and having a high binding affinity for non-coloured compounds present in stains on fabrics, said non-coloured compounds having a molecular weight of at least 100, preferably of at least 1,000 and more preferably of at least 5,000. Furthermore, there is provided an enzymatic bleaching composition comprising said bleaching enzyme and a surfactant and a process for bleaching stains present of fabrics.
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 November 24, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 24, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 24, 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.