Method for treating tubular goods
CA 2515312 A1 · Owner: Schildhauer, Otto · Inventors: Schildhauer, Otto
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a method for treating tubular goods in that , particular used for sanitation of drinking water pipelines consisting in removing, is necessary internal deposits possibly formed in the pipes and in applying coating material to the inside of said pipes. The aim of said invention is to ensure long-term hygienic conditions inside the pipes and the ease of carrying out said method. For this purpose an agent harmful for low , organisms but harmless for higher organisms i.e. an agent exhibiting , antimicrobial properties is mixed with the coating material.
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 17, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended December 17, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by December 17, 2025.
- 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.