Machine dishwashing compositions and rinse aid compositions
CA 2327308 A1 · Owner: Tartakovsky, Alla · Inventors: Winters, John Robert; Carnali, Joseph Oreste; Tartakovsky, Alla
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A detergent or rinse aid composition which reduces spotting and filming on glassware cleaned in an automatic dishwashing machine is described. The composition contains an effective amount of a water soluble cationic or amphoteric polymer having at least one monomer unit having a cationic charge over a portion of the pH range of about 2 to about 11 in the wash or rinse cycle.
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 13, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 13, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 13, 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.