Air-conditioning element and method for its manufacture
CA 2242292 C · Owner: Vaw Metawell Gmbh Metal Sandwich Technology · Inventors: Rothe, Frank
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An air-conditioning element includes ducts through which gaseous or liquid, media are passed for cooling or heating. The air-conditioning element is constructed as a solid metal sandwich with a light core of corrugated aluminum and covering layers of smooth aluminum strip. The media guides are formed between the corrugated aluminum and the covering layers, and the media guides are connected with one another by way of the ducts. A method for the production of the air-conditioning element includes the steps of joining together at a joint a stack of two covering layers and a core of corrugated aluminum, which is disposed between the covering layers by, hot rolling, adhesives, lacquers or other …
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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 July 6, 1998 and granted January 28, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended July 6, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 6, 2020.
- 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.