Improvements relating to antimicrobial cleaning compositions
CA 2235680 C · Owner: Rabone, Kenneth Leslie · Inventors: Rabone, Kenneth Leslie
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a hygienic cleaning composition of pH < 6 or pH > 8 which comprises: a) 0.01-30 wt.% on product of an ethoxylated nonionic surfactant, other than an alkyl phenol derivative said surfactant having an HLB of 10-14 (this is typically an ethoxylated alcohol having a chain length of C8-C14 and 4-10 ethoxy groups per molecule), and, b) 1-30 wt.% on product of a C1-C5 linear or branched alcohol (this is typically selected from the group comprising propan-2-ol, propanol, ethanol and mixtures thereof). It is believed that the use of 1-30 wt.% of a C1-C5 linear or branched alcohol as a biocidal activity improving additive for the selected nonionic surfactants greatly …
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 5, 1996 and granted March 5, 2002. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 5, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 5, 2018.
- 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.