Composition and method for inhibiting uptake of biguanide disinfectants by poly(ethylene)
CA 2454795 A1 · Owner: Denick, John Jr. · Inventors: Denick, John Jr.; Smerbeck, Richard V.; Xia, Erning
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a method for inhibiting the binding of a biguanide disinfectant in aqueous solution to a poly(ethylene) solid in contact with said solution comprising providing in said solution an amount of cyclodextrin sufficient to inhibit binding of the biguanide disinfectant to the poly(ethylene) solid.
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 July 18, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 18, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 18, 2024.
- 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.