Arselormital continues the legal struggle against violation of the patent for high -strength steel

Arcelormittal appealed to the vessels on the violation of her patent to a special type of high-strength steel with aluminum coating with three competing manufacturers from the North-Western Indiana, offering their products of the automotive industry.

However, Judge Delaware in December ruled that AK Steel, Severstal Dearborn Inc and Wheeling-Nisshin Inc did not infringe on the rights of a patent by usibor, thin and light steel, which allows automakers to reduce the weight of the car subject to safety standards. Arselormital appealed to the US court to protect its patent, which covers the coating with aluminum of hot rolled or cold -rolled steels and is sold under the USIBOR brand.


Mary Beth spokeswoman Holdford said that “Arselormital did not agree with the recent decision of the district court, which makes the USIBOR patent invalid. We firmly believe in legal merit in our case, and ArcelorMittal has already appealed the court decision. Meanwhile, we are taking active measures to protect our interests in this process. ”

The French company, which has become part of the ArcelorMittal conglomerate, first developed steel with aluminum -based steel, which is used after rolling the sheet to its ultimate thickness. In the United States, Arselormital produces such steel at its huge metallurgical plants in the northwestern Indiana and sells it to automakers under the USIBOR trademark. This material is used to manufacture a number of parts of the car, including beams, reinforcement reinforcements of side doors and cross member on the roof.