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    Aluminum Extrusion Processing and Applications

    Editor’s Note: With ET ’22 happening (May 3-5, 2022), it was appropriate to focus on aluminum extrusion for the International Patent Calendar for our April issue. The extrusion patents selected for this issue have been recently issued within the past 18 months and cover invented technologies in every business category that aluminum extruders serve, i.e., […]

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    Primary Aluminum: U.S. and China

    Editor’s Note: The focus of this issue’s patent survey is a comparison of primary aluminum invention patents granted in both the U.S. and China in just the past year. In both countries, the issued invention patents are enforceable over a 20-year term. At the same time, the contrast in the present state of primary aluminum […]

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    Roll-Forming of Aluminum Alloy Sheet

    Roll-forming is a manufacturing process that is typically used to manufacture components such as construction panels, structural beams, garage doors, decking, and/or any other component having a formed profile. A roll-forming production process ordinarily operates at room temperature and may be implemented by using a roll-forming machine having work rolls in sequence that receive and […]

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    Aluminum Recycling and Secondary Processing

    Editors Note: Aluminum recycling into ingots and shape castings rates as one of the most successful “green” technologies in the world. The data gathered by the Aluminum Association and the International Aluminum Institute (IAI) are impressive, noting that 90-95% less energy is used in recycling aluminum than in primary production from ore and some 75% […]

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    Aluminum for Electric Vehicle Technology

    Editor’s Note: Much has changed in the automotive world since the last time that Light Metal Age spotlighted patents focused on the role of aluminum in electric vehicles (EVs). More and more automakers and suppliers are devoting their intellectual and financial resources toward EV production. As a result, automakers are displacing or at least minimizing […]

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    Latest Friction Stir Welding of Aluminum

    Editor’s Note: As many Light Metal Age articles and items have noted, the friction stir welding (FSW) process, which joins aluminum components in the solid state, has been applied throughout the world in various industries that produce products for transportation, B&C, and industrial and consumer sectors. The November 2020 selection of patents covered a wide […]

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    Productive and Sustainable Alumina Production

    Editor’s Note: On August 3rd, 1888, Austrian chemist Karl Josef Bayer working in Saint Petersburg, Russia was granted German patent 43977 for his invention involving a process for the production of aluminum hydroxide. At the time, his invention was used by the textile industry that made use of aluminum hydroxide as a dye fixative. Other […]

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    Magnesium Alloy Process Developments and Applications

    Editor’s Note: Although the focused patent surveys in Light Metal Age have generally covered select aluminum technologies, magnesium alloy technology has generally been sidelined. Nevertheless, magnesium is a major alloying master alloy in aluminum casthouse production and critical to the reduction of light metals, such as titanium and beryllium. Therefore, this patent survey aims to […]

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    Resistance Spot Welding of Automotive Aluminum Alloy Sheet

    Resistance spot welding (RSW), a technology that’s at least 100 years old, has been used by the automotive industry almost exclusively for joining steel sheet without using filler material or flux. The process utilizes shaped copper alloy electrodes, typically water cooled, to apply heat and pressure to pass electric current through stacked up sheets to […]