Duplex stainless steel alloy and use thereof
CA 2522352 C · Owner: Lindh, Anders · Inventors: Lindh, Anders
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to a stainless steel alloy more specifically a , duplex stainless steel alloy with a ferritic-austenitic matrix and high corrosion resistance in combination with good structure stability specifically a duplex stainless steel with a ferrite content of 40-65% and a well balanced analysis and with a combination of high corrosion resistance and good mechanical properties, such as high ultimate strength and good ductility which is especially suitable for use in applications in oil and gas explorations such as wire, especially as reinforced wire in wireline applications. These purposes are achieved according to the invention by a duplex stainless steel alloy …
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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 February 19, 2004 and granted July 29, 2014. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended February 19, 2024.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 19, 2026.
- 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.