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The patent EP3538291 was granted to BWG Bergwerk UND Walzwerk Maschinenbau on Nov 16, 2022. The application was filed on Sep 25, 2017 under application number EP17772412A. The patent is currently recorded with a legal status of "Revoked".
A method for stretch-bend straightening of metal strips that eliminates the need for wet processing by using polyurethane or rubber-coated rollers in a dry straightening system. The rollers are individually supported and can be adjusted independently to achieve precise control over the strip's tension and bending. The coating prevents dirt and oxide particles from adhering to the rollers, eliminating the need for spray media and associated drying and cleaning steps.

Patent oppositions filed by competitors challenge the validity of a granted patent. These oppositions are typically based on claims of prior art, lack of novelty, or non-obviousness. They are a key part of the process for determining a patent's strength and enforceability.
Patent citations refer to prior patents cited during different phases such as opposition or international search.
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