Electroless Nickel Coating Patents: Top Companies & Trends 2026
- 27.4% concentration at the top. The top 5 assignees hold 147 of 536 records in scope — a leading position, not a monopoly, with a long tail of single- and few-filing entrants behind them.
- C23C dominates, but four adjacent classes carry real weight. 74.1% of records sit in coating & surface deposition (C23C), while printed circuits (H05K, 10.4%) and semiconductor devices (H01L, 8.2%) show the technology's pull into electronics assembly.
- Filing grew 50% from 2021 to 2024. Volume rose from 2 to 3 records across that span — a small base, but a real signal that this is not a shrinking field, even as the two most recent years still fill in under publication lag.
Filing growth compares 2021 (2 records) with 2024 (3) — a three-year span. 2024 is the most recent year we treat as complete: publication lags filing by roughly 18 months, so 2025 onwards are still filling in and any growth rate that ends there would understate the field. Top-5 share is the combined record count of the five largest assignees divided by all 536 records in scope (CR5), not by the ranked leaders only.
What the patent record shows about electroless nickel and autocatalytic coatings
Electroless nickel plating and related autocatalytic coating processes sit at the intersection of surface chemistry and manufacturing control: bath composition, phosphorus content, deposition rate and post-bake hardness are the levers that determine whether a deposit meets a corrosion-resistance or hardness specification. The 536 records in scope span 2015 through mid-2026, with publication concentrated around bath formulation, additive chemistry and process control rather than novel substrate classes. C23C — coating and surface deposition — accounts for 74.1% of records, confirming that most patent activity still targets the core plating chemistry rather than downstream integration.
The filing record also shows meaningful spillover into printed circuit assembly (H05K) and semiconductor devices (H01L), reflecting electroless nickel's role as a barrier and solderable finish in electronics manufacturing. Receiving-office data shows Japan and the United States each with 131 filings, ahead of Europe, WIPO, South Korea and China — a pattern consistent with a mature chemistry with established filers in a small number of jurisdictions rather than a technology still spreading across new markets.
Filing trends and technology composition
The trend and classification data below are drawn directly from the 536 records in scope, using the same denominators throughout: record counts for the trend line and share-of-536 for every IPC class.
Filing activity, 2017–2026
Filings peaked at 16 in 2017 and have since settled to a lower steady rate; the 2021→2024 span shows a 50% increase in volume even though the last one to two years are understated by publication lag and should not yet be read as a decline.
Technology composition by IPC subclass
C23C (coating & surface deposition) covers 74.1% of the 536 records, far ahead of H05K (10.4%), H01L (8.2%), B05D (7.1%), C25D (5.6%), H10W (3.2%), B23K (2.8%) and C22C (2.4%). Because records can carry multiple IPC classes, these shares add up to more than 100% of the record total.
Shares are the percentage of the 536 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Electroless Nickel and Autocatalytic Coatings with Eureka
This page is one run against one query. Ask Eureka your own question about electroless nickel and autocatalytic coatings and every answer comes back with the patent numbers behind it.
Try EurekaMost-cited records and a representative filing
Aqueous Electroless Nickel Plating Bath and Method of Using the Same (US20150345027A1)
Filed by MacDermid Acumen in December 2015, this record discloses an electroless nickel plating solution that holds phosphorus content at about 12% throughout the bath's lifetime, using a nickel-ion source, a hypophosphite reducing agent, and a chelation system built from dicarboxylic acids and alpha hydroxy carboxylic acids, with optional stabilizers and brighteners.Its emphasis on phosphorus-content stability over the full bath life — rather than at a single point — is the claim feature worth checking against any new bath-chemistry filing in this space.
View filing details| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US4397812A | Electroless nickel polyalloys | 322 |
| 2 | US5910340A | Electroless nickel plating solution and method | 311 |
| 3 | US5843538A | Method for electroless nickel plating of metal substrates | 279 |
| 4 | US20090317556A1 | Method of Chrome Plating Magnesium and Magnesium Alloys | 75 |
| 5 | US3152009A | Electroless nickel plating | 69 |
| 6 | US4600609A | Method and composition for electroless nickel deposition | 64 |
| 7 | US5258061A | Electroless nickel plating baths | 62 |
| 8 | US5730856A | Method for treating waste liquid with electrolytic oxidation and apparatus for carrying out the same | 61 |
| 9 | US4483711A | Aqueous electroless nickel plating bath and process | 60 |
| 10 | US6800121B2 | Electroless nickel plating solutions | 59 |
Citation counts reflect an older, foundational cohort — treat them as a measure of influence within this searched corpus, not a ranking of current commercial relevance.
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Browse MCP servers →What the numbers mean for a filing decision
Three figures matter most when deciding where to file next in this field: how concentrated ownership already is, how the technology splits across classes, and whether the growth trend supports continued investment.
Leadership is real but not exclusionary
The top 5 assignees combined hold 147 of the 536 records in scope (27.4%), and the top 10 hold 202 (37.7%). That leaves close to two-thirds of the field outside the ten most active filers — room for a well-differentiated bath chemistry or process-control claim to clear prior art without going head-to-head with the leader's core patents.
Core chemistry still absorbs most filing activity
Coating and surface deposition claims dominate at 74.1% of records, while electronics-adjacent classes — H05K at 10.4% and H01L at 8.2% — show where electroless nickel is being claimed as an integration step rather than a standalone process. A new filing that sits only in C23C is entering the most crowded part of the field.
Small base, but growing, not shrinking
Filing volume moved from 2 records in 2021 to 3 in 2024 — a 50% increase across a low base. The two most recent years in the dataset are still filling in under the roughly 18-month publication lag, so the apparent flattening after 2024 should not be read as a slowdown yet.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to electroless nickel and autocatalytic coatings, with the prior art for and against each one.
Who is filing, and where the gaps sit
The ranked assignee list spans 100 companies counted in records, led by a single filer at 54 records, with fifth place at 15 and tenth place at 9 — a steep drop-off after the leader rather than a flat distribution.
One filer well ahead of the field
The top-ranked assignee holds 54 records, more than three times the fifth-place holder at 15. That gap suggests a deep, defensible portfolio in core bath chemistry that a new entrant should map carefully before filing adjacent claims.
A crowded second tier
Between fifth place (15 records) and tenth place (9 records), several assignees sit close together — a sign of active, contested filing in this tier rather than a single clear runner-up to the leader.
A long tail beyond the top 10
With the top 10 accounting for 37.7% of all 536 records, the remaining 90 ranked assignees and the wider field of filers outside the ranking hold the majority of activity in smaller, more dispersed portfolios — evidence of an open field for focused process-improvement claims.
| Assignee | Recent year | YoY |
|---|---|---|
| MacDermid Acumen, Inc. | 0 | — |
| Atotech Deutschland GmbH | 0 | — |
| MacDermid, Inc. | 0 | — |
| C. Uyemura & Co., Ltd. | 0 | — |
| JX Nippon Mining & Metals Corporation | 0 | — |
| Toppan Holdings Inc. | 0 | — |
| OMI International Corp. | 0 | — |
| COVENTYA INC | 0 | — |
Turning this landscape into a filing or freedom-to-operate decision
The figures above establish where the field stands; the next step is testing a specific claim or substrate combination against the underlying records rather than the aggregate counts.
Check a specific bath chemistry against prior art
Concentration at the top means the leader's core hypophosphite and chelation-system claims are well documented — a new formulation should be checked against those specific families before drafting.
Explore prior art in EurekaMap white space in adjacent IPC classes
The under-claimed branches above sit in classes with lower record density than C23C; a targeted search of those classes can surface open claim space faster than a broad keyword search.
Run a white space search in EurekaCommon questions about electroless nickel and autocatalytic coating patents
The ranked leader in this dataset holds 54 of the 536 records in scope, well ahead of the fifth-place assignee at 15. The top 5 assignees combined account for 27.4% of all records, and the top 10 account for 37.7%. That leaves a majority of the field spread across a long tail of smaller filers, including many single-patent entrants.
Most activity sits in IPC subclass C23C, coating and surface deposition, which covers 74.1% of the 536 records in scope. Meaningful secondary activity appears in H05K (printed circuits, 10.4%) and H01L (semiconductor devices, 8.2%), reflecting electroless nickel's use as an integration step in electronics manufacturing rather than only as a standalone coating process.
Filing volume grew 50% from 2021 to 2024, rising from 2 to 3 records across that span on a small base. The peak year in the full dataset was 2017 at 16 records. The two most recent years show lower counts, but publication typically lags filing by around 18 months, so those years are not yet complete and should not be read as a decline.
Lower-density branches relative to the dominant C23C chemistry include post-bake hardness control additives, bath-life extension through stabiliser chemistry, electroless nickel on magnesium alloy substrates, and deposition-rate control for high-aspect-ratio features. These sit adjacent to the core plating-bath claims that the leading assignees already hold densely, making them a more open starting point for a new filing.
US20150345027A1, assigned to MacDermid Acumen, claims an aqueous electroless nickel bath that holds phosphorus content at about 12% throughout the bath's operating life using a hypophosphite reducing agent and a dicarboxylic/alpha-hydroxy carboxylic acid chelation system. A new formulation that varies the chelation chemistry, targets a different stable phosphorus level, or addresses bath life through a different mechanism would sit outside its specific claim scope, but any bath claiming similar phosphorus-stability behaviour should be checked against it directly.
Japan and the United States each recorded 131 filings in this dataset, making them the two leading receiving offices by a clear margin. Europe (EPO) follows at 67, with WIPO (PCT) at 41, South Korea at 29 and China at 25. This pattern points to a technology with established filing activity concentrated in a small number of mature jurisdictions rather than one still expanding into new markets.
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Disclaimer. This page is generated from Patsnap Eureka data drawn from a limited snapshot of global patent and scientific-literature records, and is provided for general information and reference only.
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.
Nothing on this page constitutes an exhaustive prior-art, novelty, freedom-to-operate, or validity search, nor does it constitute legal, financial, investment, or professional advice, and it should not be relied upon as such. Any patent, commercial, or strategic decision should be verified independently and reviewed with qualified patent, legal, and domain professionals. Patsnap makes no warranties, express or implied, as to the accuracy, completeness, or fitness for any particular purpose of the information presented.
Machine translation. Assignee and organisation names originally recorded in Chinese, Japanese or Korean have been rendered into English by an AI translation step so that the tables stay readable. These renderings are best-effort and may not match a company’s registered English name; the original name is what the underlying patent record carries, and it is what any Eureka query launched from this page uses.