Stable, low free formaldehyde, synergistic antimicrobial compositions of aldehyde donors and dehydroacetic acid
CA 2495893 A1 · Owner: Tafesh, Ahmed M. · Inventors: Lutz, Patrick Jay; Tafesh, Ahmed M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a stable low free formaldehyde, synergistic , antimicrobial composition and a method of inhibiting the growth of or reducing microorganisms by applying the composition. Preferably the , constituents are dimethylol dimethylhydantoin monomethylol dimethylhydantoin, dimethyl hydantoin and dehydroacetic acid or its salts thereof. The composition has a free formaldehyde content of less than 0.2% and is beneficial for controlling microbiological and fungal contamination in personal care products, household products and industrial products and systems.
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 20, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 20, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 20, 2025.
- 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.