LPBF Powder Supply & Recycled Powder Patent Landscape
The LPBF powder supply and recycled powder space comprises 105 patent families, with China accounting for the dominant share of filings and no single applicant holding more than 5 patent families. Annual volume plateaued near its 2020 peak, indicating a maturing but still active field where incremental positioning remains feasible.
A fragmented field with Chinese institutions and global challengers sharing the lead
The competitive structure is highly fragmented: the top-ranked applicant, Suzhou Zhongke Innovation Institute of Laser Intelligent Technology, holds only 5 patent families, tied with Russia’s Moscow State Technological University STANKIN. No organization has established a dominant blocking position.
The top five filers account for 18% of the combined total of the hundred largest filers, confirming a flat competitive hierarchy with no decisive tier gap between leader and challenger positions. Chinese universities, state-backed research institutes, and specialist equipment companies occupy most of the top-20 slots.
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 1 | Suzhou Zhongke Innovation Institute of Laser Intelligent Technology Co., Ltd. | 5 | |
| 2 | Moscow State Technological University STANKIN (MGTU Stankin) | 5 | |
| 3 | Nanjing Zhongke Raycham Laser Technology Co., Ltd. | 4 | |
| 4 | Realizer GmbH | 4 | |
| 5 | The Government of the United States of America (U.S. Naval Research Laboratory) | 3 | |
| 6 | Federal State Autonomous Educational Institution of Higher Education (Russian Federation) | 3 | |
| 7 | NANJING UNIV OF AERONAUTICS & ASTRONAUTICS | 3 | |
| 8 | Beijing Longyuan Automated Fabrication System Co., Ltd. | 3 | |
| 9 | Guangzhou Leijia Technology Co., Ltd. | 2 | |
| 10 | Shanghai Hanbang United 3D Technology Co., Ltd. | 2 |
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 11 | Xi’an Jiaotong University | 2 | |
| 12 | Centre National d’Études Spatiales (CNES) | 2 | |
| 13 | Centre National de la Recherche Scientifique (CNRS) | 2 | |
| 14 | Thales SA | 2 | |
| 15 | Jianghan University | 2 | |
| 16 | Shanghai University of Engineering Science | 2 | |
| 17 | Zhejiang Yidong Technology Co., Ltd. | 2 | |
| 18 | Xi’an University of Technology | 2 | |
| 19 | KUNMING UNIV OF SCI & TECH | 2 | |
| 20 | North University of China (Zhongbei University) | 2 |
The distributed ownership means that freedom-to-operate risks are spread across many small portfolios rather than concentrated in one or two large holders — an unusually open environment for a manufacturing-process technology at this stage of development.
Filing counts for 2025 and 2026 are under-counted due to the standard 18–24 month patent publication lag and should not be read as a slowdown. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Annual volume plateaued after 2020; core IPC classes dominate with sparse adjacent branches
Two views — the annual filing trend and the IPC technology composition — together show a field that surged in 2020 and has since stabilised, with patent activity tightly clustered in powder metallurgy and additive manufacturing process classes.
Annual filing trend
Filings jumped sharply in 2020 and have since oscillated in a narrower band through 2024, consistent with a maturing field. The 2025 and 2026 bars are incomplete due to publication lag and understate true activity.
↗ Hover for values · click a bar to ask EurekaTechnology composition
B22F (powder metallurgy) and B33Y (additive manufacturing) together account for the vast majority of IPC classifications, confirming that work is concentrated on process and machine design. Alloy composition (C22C), sieving and sorting (B07B), and material analysis (G01N) appear as thin adjacent branches, signalling limited formal patent activity in powder qualification and characterisation workflows.
↗ Hover for values · click a bar to ask EurekaHighly cited patent families surfaced by the query
Citation-heavy patent families returned by the query. Use this section as citation context, not as a curated list of the most topic-specific patents.
Apparatus and method for selective laser melting a…
In an apparatus for selective laser melting and/or laser sintering with a mounting base, that has at least one chamber, wherein the at least one chamber is a building chamber and/or a powder reservoir chamber for a powder, the saving of powder results in an increase in the possible uses of the apparatus, in that the apparatus further comprises at least one… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | 一种粉末床五轴增减材复合制造装备 | 19 |
| 2 | 复合结构金属构件选区激光熔化增材制造装置及工作方法 | 16 |
| 3 | Method for forming a multi-material part by select… | 15 |
| 4 | 一种基于SLM设备实现多材料增材制造成型的装置及方法 | 14 |
| 5 | 一种304/304L不锈钢的选区激光熔化成型方法 | 12 |
| 6 | Aluminum alloy workpiece and preparation method th… | 9 |
| 7 | Device for producing products by selective laser m… | 9 |
| 8 | Controlling AM spatter and conduction | 9 |
Ranked by total forward citations. Citation counts favour older and broadly cited patent families, and broad or adjacent patents may appear when they match the search scope. Treat this section as citation context, not as a curated list of the most topic-specific patents. Some patent titles may be shown in their original, non-English language where an accurate translation could not be guaranteed.
What the competitive structure means for R&D investment decisions
The combination of a maturing filing pace, fragmented ownership, limited cross-border filings, and sparse powder-qualification coverage points to specific areas where positioning is still achievable.
Field is maturing: annual volume has plateaued near the 2020 peak
The lifecycle evidence classifies this field as Maturity, with annual filings having plateaued near the 2020 peak of 23 families per year. The multi-year window still shows positive growth of 15%, meaning the field is not in decline, but the era of rapid expansion has passed. New entrants should target differentiated sub-problems rather than replicate existing process-patent approaches.
Lifecycle: MaturityFlat hierarchy: no applicant holds more than 5 patent families
With the top five filers accounting for 18% of the hundred largest filers’ combined total, and the absolute leader holding only 5 patent families, there is no portfolio cliff to navigate. This low concentration level means that a focused filing programme of even modest scale could place a new entrant within the visible top tier.
Low concentrationTwo documented co-filing pairs; ecosystem is largely siloed
Evidence shows two active co-applicant relationships: Suzhou Zhongke Innovation Institute of Laser Intelligent Technology filing jointly with Nanjing Chenguang Group, and Nanjing University of Aeronautics and Astronautics filing with Hunan Hangtian Chengyuan Precision Machinery. Both pairings combine research institutes with industrial partners, suggesting the dominant collaboration model is academy–industry rather than cross-company. The broader applicant list shows limited evidence of consortium-scale cooperation.
Limited co-filingChina-centric filing; United States and Russia are secondary markets
China is the lead jurisdiction by a substantial margin, followed by the United States and Russia as secondary markets. PCT and EPO filings are minimal, indicating that most applicants have not pursued broad international protection. This geographic skew creates an asymmetry: non-Chinese organisations face less prior-art competition in their home jurisdictions, and global filing of well-scoped claims in the adjacent powder-qualification and sorting branches would face sparse opposition.
China-dominantGo beyond the landscape: Eureka’s TRIZ Solution agent breaks down an R&D problem and returns patented concept solutions, each with a technical approach and cited patent & literature evidence.
| Applicant | Collaborator | Co-filings |
|---|---|---|
| Suzhou Zhongke Innovation Institute of Laser Intelligent Technology Co., Ltd. | Nanjing Chenguang Group Co., Ltd. | 1 |
| Nanjing University of Aeronautics and Astronautics | Hunan Hangtian Chengyuan Precision Machinery Co., Ltd. | 1 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
Suzhou Zhongke and MGTU Stankin lead on volume; US Navy enters on powder-process fundamentals
The two co-leaders differ in orientation: the Chinese institute focuses on machine and process integration, while the Russian university emphasises powder metallurgy consolidation. Both are recorded as new entrants in the recent period, reflecting a field where the leaderboard is still forming.
Suzhou Zhongke Innovation Inst.
Holds 5 patent families, tied for first place, with technology emphasis on B22F 12 (machine design in powder metallurgy), B22F 10 (LPBF process steps), and B33Y 40 (post-processing in additive manufacturing). Momentum is flagged as a new entrant, indicating this position has been built entirely in the recent filing window — a recent and concentrated push rather than a long-standing portfolio.
patent families: 5MGTU Stankin
Also holds 5 patent families, with focus split evenly across B22F 12, B22F 3 (powder compaction and sintering), and B33Y 30 (apparatus for additive manufacturing). The co-equal focus on traditional powder metallurgy consolidation (B22F 3) distinguishes this portfolio from the Chinese leaders, which concentrate more narrowly on LPBF-specific process and machine classes. Also flagged as a new entrant in the recent window.
patent families: 5| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| Suzhou Zhongke Innovation Institute of Laser Intelligent Technology Co., Ltd. | 5 | ▲ new entrant |
| Moscow State Technological University STANKIN (MGTU Stankin) | 4 | ▲ new entrant |
| U.S. Naval Research Laboratory | 3 | ▲ new entrant |
| Beijing Longyuan Automated Fabrication System Co., Ltd. | 1 | ▲ new entrant |
| Shaanxi Xinghuaye 3D Technology Co., Ltd. | 2 | ▲ new entrant |
Powder sorting, qualification testing, and alloy-specific recycling are under-served adjacent branches
The dominant B22F and B33Y classes crowd out several technically adjacent areas where patent density is low relative to their engineering relevance to LPBF powder re-use workflows.
B07B · Sieving & Sorting
With only 5 patent records in this branch, formal IP coverage of powder sieving, screening, and classification — processes central to qualifying and re-certifying recycled LPBF powder — is sparse. Any organisation developing inline or automated sieving hardware or flowability-monitoring systems for recycled powder streams could establish a defensible position with limited prior-art conflict. Entry path is hardware-oriented and integrable with existing LPBF machine architectures.
Search this in Eureka →G01N · Material Analysis & Testing
Only 2 patent records appear under G01N (material analysis and testing), despite powder characterisation — particle size distribution, morphology, oxygen content, flowability — being a critical quality gate in recycled-powder workflows. This sparsity is notable given the engineering importance of in-process or post-recycle qualification. Organisations developing sensor-based or AI-assisted powder-quality monitoring methods face a largely open landscape in formal IP terms.
Search this in Eureka →How leading applicants differ across powder metallurgy and additive manufacturing sub-classes
Route coverage across the main technology branches in the current evidence set.
| Player | B22F 10 · Powder metallurgy | B22F 12 · Powder metallurgy | B33Y 30 · Additive manufacturing (3D printing) | B33Y 10 · Additive manufacturing (3D printing) | B33Y 40 · Additive manufacturing (3D printing) |
|---|---|---|---|---|---|
| Zhejiang Yidong Technology Co., Ltd. | Strong · 6 | Strong · 7 | Strong · 6 | Absent | Strong · 5 |
| Nanjing Zhongke Raycham Laser Technology Co., Ltd. | Strong · 4 | Strong · 4 | Strong · 3 | Moderate · 2 | Absent |
| Suzhou Zhongke Innovation Institute of Laser Intelligent Technology Co., Ltd. | Strong · 4 | Strong · 5 | Absent | Absent | Strong · 3 |
| Realizer GmbH | Strong · 4 | Strong · 3 | Strong · 3 | Absent | Absent |
| Moscow State Technological University STANKIN (MGTU Stankin) | Absent | Strong · 5 | Strong · 3 | Absent | Moderate · 2 |
| Beijing Longyuan Automated Fabrication System Co., Ltd. | Strong · 3 | Strong · 3 | Strong · 3 | Absent | Absent |
| Shanghai University of Engineering Science | Strong · 2 | Strong · 2 | Strong · 2 | Absent | Strong · 2 |
Frequently asked questions
The corpus contains 105 patent families in scope. The field is relatively small, reflecting a niche within the broader additive manufacturing landscape, and no single applicant holds more than 5 patent families.
China is the lead jurisdiction by a wide margin, followed by the United States and Russia as secondary markets. PCT and European Patent Office filings are minimal, indicating limited systematic international protection strategies among current applicants.
Suzhou Zhongke Innovation Institute of Laser Intelligent Technology and Moscow State Technological University STANKIN (MGTU Stankin) are co-leaders, each with 5 patent families. Nanjing Zhongke Raycham Technology and Realizer GmbH follow with 4 patent families each.
The field is classified as Maturity, with annual filings having plateaued near the 2020 peak. The multi-year window still shows positive growth of 15%, so the field is not contracting, but the rapid-expansion phase has ended. Note that 2025 and 2026 filing counts are under-counted due to publication lag.
B07B (sieving and sorting) and G01N (material analysis and testing) are the two most notable under-served adjacent branches, with only 5 and 2 patent records respectively. Both are directly relevant to powder qualification workflows in recycled-powder re-use, yet formal IP coverage is thin.
Evidence shows two documented co-filing relationships: Suzhou Zhongke Innovation Institute filing with Nanjing Chenguang Group, and Nanjing University of Aeronautics and Astronautics filing with Hunan Hangtian Chengyuan Precision Machinery. Both pair a research institute with an industrial partner; broader consortium-scale collaboration is not evident in the data.
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Patent data carries inherent limitations: recent filings (typically the most recent 18–24 months) are under-counted due to standard publication lag; counts may be reported at either a patent-family or a patent-record basis and are not always directly comparable; classification, applicant-name, and citation data may contain errors, duplicates, or omissions; and the underlying search query defines and constrains the scope shown. As a result, the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
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