A compound body and method for manufacturing it
CA 2501868 A1 · Owner: Kretschmar, Christel · Inventors: Kretschmar, Christel; Otschik, Peter; Guenther, Herbert
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A composite body has a base body made from steel and has a heating coating applied thereto. The base body is produced from a precipitation-hardened steel and has a round or arched surface for the heating coating when used as a distribution or material pipe in a heating channel system. Said heating coating is embodied as a layer composite with several layers and/or layer elements which are serially applied as thick layer pastes or films dried and , baked. A pressurised pre-stressing produced thus in the heating coating can be selectively increased by means of precipitation hardening of the base body.
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 13, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 13, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 13, 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.