Bleaching enzymes
CA 2293304 A1 · Owner: Davis, Paul James · Inventors: Verrips, Cornelis Theodorus; Beggs, Thomas Stewart; Berry, Mark John
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 stains present on fabrics. 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 May 29, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 29, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 29, 2020.
- 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.