Cleaner for removing graffiti paint applications
CA 2111924 A1 · Owner: Acklin, Hanspeter · Inventors: Schmidhausler, Rolf
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The described cleaner is used for removing so-called graffiti paint applications. It is 100% biodegradable and free from toxic substances. It can be processed without any special protective measures and can be disposed of by feeding into the sewer system. Application is easy, preferably taking place by means of a brush or by rubbing in, whilst washing off takes place after a certain action period using a high pressure cleaner. In the case of smooth surfaces it is merely necessary to wash off with a wet rag.
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 December 20, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 20, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 20, 2015.
- 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.