Washing process using detergent tablets
CA 2307430 A1 · Owner: Kruse, Hans-Friedrich · Inventors: Boecker, Monika; Kruse, Hans-Friedrich; Schambil, Fred
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The disadvantages of detergent tablets dispensed via the drum of a washing machine, more particularly elimination of the need to use dispensers without any problems arising in regard to dissolving behavior or spotting, can be avoided by a process for washing laundry using detergent tablets in a domestic washing machine in which the detergent tablets are added to the washing in the drum without a dispensing aid before the washing process and contain sodium percarbonate.
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 3, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended May 3, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 3, 2022.
- 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.