Phosphate-containing powder automatic dishwashing composition with enzymes
CA 2069849 A1 · Owner: Drapier, Julien · Inventors: Drapier, Julien; Durbut, Patrick; Ahmed, Fahim
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A powdered dishwashing composition containing a mixture of protease enzyme and anamylase enzymes have been found to be very useful in the cleaning of dishware. The compositions contain a nonionic surfactants, phosphate builder salt and an, alkali metal silicate and optionally a bleaching agent.
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 May 28, 1992. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 28, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 28, 2014.
- 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.