Research Status in Aluminum Alloy Additive Manufacturing from a Patent Analytics Perspective

WANG Xiaoli; JING Huaiyu

doi:10.3969/j.issn.1674-6457.2026.04.006

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Journal of Netshape Forming Engineering ›› 2026, Vol. 18 ›› Issue (4) : 56-68. DOI: 10.3969/j.issn.1674-6457.2026.04.006

Additive Manufacturing

Research Status in Aluminum Alloy Additive Manufacturing from a Patent Analytics Perspective

WANG Xiaoli^1,*, JING Huaiyu²

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Abstract

The work systematically analyzes global patent data related to aluminum alloy additive manufacturing since 2011, with a focus on patent application trends, geographical distribution, key technical subcategories, major applicants, and core patents, to comprehensively map the intellectual property landscape and provide references for further research. The findings reveal that the technology lifecycle of aluminum alloy additive manufacturing has progressed through emergence, growth, and maturity stages. Geographically, China, the United States, and the EPO dominate patent filings. Regarding patent flows among major patent offices, the United States, France, and Japan dominate in patent outflows, while the EPO, the United States, and China rank as the top three recipients of patent inflows. Key technical clusters include alloys based on aluminium, additive manufacturing of workpieces or articles from metallic powder, metallic powder and its treatment, e.g. to facilitate working or to improve properties, manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering, apparatus specially adapted therefor. Among top applicants, France’s Constellium leads with 118 patents, followed by Central South University (53 patents) and Shanghai JiaoTong University (42 patents). Among major applicants, Chinese applicants predominantly concentrate their filings domestically, while foreign applicants maintain significant patent portfolios in non-home countries. Additionally, among the top 5 most cited patents, three originate from the United States and two from China.

Key words

aluminum alloy / additive manufacturing / patent / intellectual property landscape / research status

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WANG Xiaoli, JING Huaiyu. Research Status in Aluminum Alloy Additive Manufacturing from a Patent Analytics Perspective[J]. Journal of Netshape Forming Engineering. 2026, 18(4): 56-68 https://doi.org/10.3969/j.issn.1674-6457.2026.04.006

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