Aluminium Anodizing Patents: Who Leads, Where the Gaps Are 2026
Anodizing and Electrophoretic Coating Patents for Aluminium Profiles
Filing is genuinely concentrated: the top 5 assignees hold 24.2% of all 987 records in scope, and the top 10 hold 35.8% — a real lead group, not a flat field. Annual filings ran from 8 in 2017 up to a peak of 21 in 2020, then eased to 5 in 2021 and 3 in 2024 — a -40% move over that three-year span. 2025 and 2026 figures (down to 1) are still filling in under the usual publication lag and should not be read as a collapse in activity.
- 1NIPPON LIGHT METAL CO LTD8.6%
- 2SANKYO TATEYAMA INC5.2%
- 3MITSUBISHI CHEM CORP3.9%
- 4KONICA CORP3.5%
- 5SUZUKI MOTOR CORP3.0%
See the full anodizing and electrophoretic coating of aluminium profiles analysis in Eureka
- The complete ranking, not just the top five
- Every IPC branch with its share of the corpus
- The most-cited records, and where claim space is still thin
Common questions about this landscape
Who are the leading patent holders in aluminium anodizing and electrophoretic coating?
The assignee ranking in this dataset covers 100 companies, with the single leader holding 85 records against a fifth-place count of 30 and a tenth-place count of 18. That drop-off shows a genuine leader-plus-pack structure rather than an evenly spread field. The top 5 assignees together account for 24.2% of all 987 records in scope, and the top 10 account for 35.8%, so a meaningful share of the field still sits outside any single dominant filer.
Is patent filing in this space growing or slowing down?
Filing peaked at 21 records in 2020 and has since eased, moving from 5 in 2021 down to 3 in 2024, a -40% change over that span. Counts for 2025 and 2026 look lower still, but publication typically lags actual filing by around 18 months, so those most recent years are understated rather than proof of a real decline. Read the 2021-2024 window as the most reliable recent signal.
Which countries see the most anodizing and electrophoretic coating patent activity?
Japan’s receiving office accounts for 570 of the 987 records in this dataset, far ahead of the United States at 150 and the European Patent Office at 90. The United Kingdom, Canada and Australia each sit in the twenties. Anyone running a clearance search on this topic without a Japanese-language pass is missing the majority of documented activity.
Disclaimer. This analysis is based on Patsnap Eureka data drawn from a limited snapshot of global patent records and is provided for general information and reference only. Patent data carries inherent limitations — recent filings are under-counted because of publication lag, counts may be on a record or family basis, classification and applicant-name data may contain errors or duplicates, and the underlying search query defines the scope shown — so the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
Nothing here is an exhaustive prior-art, novelty, freedom-to-operate or validity search, nor does it constitute legal, financial or professional advice, and it should not be relied upon as such. Verify independently and review with qualified patent and legal professionals before acting on it.
Method: Filing trend and technology composition. Derived from a Patsnap search on Anodizing and Electrophoretic Coating of Aluminium Profiles covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish. Every share divides by all records in scope. Data: Patsnap Eureka. See the full landscape report.