Automatic cleaner for toilets
CA 2000279 A1 · Owner: Tuerk, Erich · Inventors: Weiss, Volker; Menke, Ronald; Weiss, Volker
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An automatic toilet cleaner includes a container with a lateral opening below an opening at an upper end the lateral, opening being provided on a portion of the container immediately above a lower portion containing a solid cleanser that is water soluble, and a float fixed to the container for free floating of the toilet cleaner as a whole with the exit of the lateral opening kept permanently below the water surface in a manner providing that the lateral opening is safeguarded against outflow of active-substance concentrate when the water tank is full of water, and permits release of the activesubstance concentrate during flushing of the toilet at a time when a substantial amount of water …
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 6, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 6, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 6, 2011.
- 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.