Control of biofilms in industrial water systems
CA 2462898 C · Owner: Nalepa, Christopher J. · Inventors: Nalepa, Christopher J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The effectiveness of a bromine-based biocide in combating formation of biofilm infestation and/or growth of biofilm on a surface is potentiated by use therewith of a biodispersant. The biocide is a bromine based-biocide comprising (i) a sulfamate-stabilized, bromine-based biocide or (ii) at least one 1,3-dibromo-5,5-dialkylhydantoin in which each of the alkyl groups independently, contains in the range of 1 to about 4 carbon atoms the total , number of carbon atoms in these two alkyl groups not exceeding 6 or both of , (i) and (ii).
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 October 9, 2002 and granted March 27, 2012. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 9, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 9, 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.