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Run your analysis now →https://www.patsnap.com/resources/blog/rd-blog/functional-and-smart-coatings-self-healing-anticorrosion-coatings-patent-landscape-patent-landscape/ · Patsnap · data cut-off 2026-07-31 · downloaded from the live page
Patent Landscape · Self-Healing Anticorrosion CoatingsSelf-healing anticorrosion coating patents: who leads, where filings peaked, and what's still open
- Concentration is modest at the top. the leading assignee holds 32 records, and the top 5 combined account for just 22.3% of the 520 records in scope — no single player controls the field.
- Filing activity has pulled back hard from its peak. the peak year was 2021 at 23 filings; by 2024, the last complete year, filings had fallen to 5, a -78% swing that predates any publication-lag effect.
- Coatings chemistry dominates the IPC mix. C09D (coatings, paints & inks) touches 35.2% of records, more than double the next largest class, B32B laminates at 13.7%.
520
Published Records
22%
Top-5 Share of All Records
-78%
Filing Growth 2021→2024
JP
Leading Jurisdiction
Filing growth compares 2021 (23 records) with 2024 (5) — 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 520 records in scope (CR5), not by the ranked leaders only.
Published byPatsnap Research··7 min readSourced from Patsnap Eureka
Overview
What the self-healing anticorrosion coating patent record shows
Self-healing anticorrosion coatings sit at the intersection of polymer chemistry, microencapsulation and corrosion science. The 520 records in scope (2015–2026, publication dates) span everything from microcapsule-based repair chemistries to layered barrier systems and pipe-specific corrosion inhibitors. The dataset draws on filings tagged with self-healing, anticorrosion and functional/smart-coating language, giving a reasonably tight view of the field rather than the broader universe of protective coatings.
Filing activity rose through the late 2010s, peaked in 2021, and has since declined sharply through 2024, the most recent year that can be read as complete. Publication typically lags filing by around 18 months, so 2025 and 2026 figures are still filling in and should not be read as a continuation of the decline. Assignee concentration is real but not extreme: a handful of firms file consistently, but a long tail of single- and few-filing entrants keeps the field from looking like a two-player race.
Filing activity and technology composition, 2015–2026
Source: Patsnap Eureka. Assignee ranking and totals. Derived from a Patsnap search on Functional & Smart Coatings — Self-Healing Anticorrosion Coatings Patent Landscape covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
The Data
Filing trends and technology composition
Two views of the same 520-record dataset: how filing volume has moved year over year, and how records distribute across IPC subclasses. Because a single record can carry several IPC codes, the composition shares add up to more than 100% of the record total.
Filing trend, 2017–2026
Filings climbed to a peak of 23 in 2021, then fell to 5 by 2024, a -78% drop over that three-year span. The 2025-2026 tail is still incomplete due to publication lag and should not be treated as evidence of further decline.
IPC subclass composition
C09D (coatings, paints & inks) appears in 35.2% of the 520 records, well ahead of B32B laminates (13.7%), C23C surface deposition (13.5%) and B05D coating processes (12.9%). Smaller but distinct clusters sit in A01N biocides (7.3%), F16L pipe fittings (7.1%), C08G condensation polymers (6.2%) and C23F corrosion/metal removal (6.2%).
Shares are the percentage of the 520 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Source: Patsnap Eureka. Filing trend and technology composition. Derived from a Patsnap search on Functional & Smart Coatings — Self-Healing Anticorrosion Coatings Patent Landscape covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.
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Representative and most-cited filings
Representative filing
US20060042504A1 — Self-healing coatings using microcapsules
UNITED STATES OF AMERICA AS REPRESENTED BY THE SECRETARY OF THE ARMY
Self-healing coatings incorporate microcapsules of about 60-150 microns diameter that contain film formers and dust suppression compounds suitable for controlling spalling of lead dust, for example. In one embodiment, a primer paint is mixed with these microcapsules and applied by brushing or rolling. After the coating has cured, any physical compromise of the coating results in microcapsules bursting to release liquid that fills and seals the compromised volume. The microcapsule contents protect the underlying substrate from damage and repair some of the outer coating. In one application, embodiments of these self-healing coatings seal existing lead-based paint for suppression of lead dust.Filed by the United States as represented by the Secretary of the Army, published 2006-03-02 — one of the earliest microcapsule self-healing filings in the dataset and a frequent citation anchor for later work.
Most-cited records in the dataset
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US5246736A | Process for the manufacture of a refractory composite material protected against corrosion | 162 |
| 2 | US20150175814A1 | Slips Surface Based on Metal-Containing Compound | 91 |
| 3 | US20110070376A1 | Anti-fouling Paints & Coatings | 87 |
| 4 | CN102702838A | 微裂纹自修复微胶囊及其制备方法 | 74 |
| 5 | US20060042504A1 | Self-healing coatings using microcapsules | 52 |
| 6 | US4429003A | Protective coating for porous refractories | 51 |
| 7 | US5476056A | Method of forming air layer over immersed surfaces of structure having immersed portions, and structure of co… | 47 |
| 8 | US20090042042A1 | Tei Coat for Organopolysiloxane Antifouling Coat, Composite Coats, and Ships and Underwater Structures Covere… | 44 |
| 9 | US20100064938A1 | Metallic paint, method for the production thereof, and uses thereof | 39 |
| 10 | EP1867401A1 | Tie coat for organopolysiloxane antifouling coat, composite coats, and ships and underwater structures covere… | 36 |
Citation counts accumulate over time, so older records are structurally favoured. Read this table as a map of technical influence within the corpus, not as a ranking of current commercial relevance.
Patent titles are shown in the language they were filed in, not translated, so that each record stays verifiable against the original filing — a translated title will not match in Eureka or in any national register. Each row carries its publication number; clicking a row searches Eureka by that number.
Source: Patsnap Eureka. Citation counts and representative records. Derived from a Patsnap search on Functional & Smart Coatings — Self-Healing Anticorrosion Coatings Patent Landscape covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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What the numbers mean for a filing decision
Three patterns stand out once the ranking, the trend and the IPC composition are read together.
Concentration
22.3% of 520
top 5 share of all records
The top of the field is real but not a bottleneck
The leading assignee holds 32 records and the top 5 combined reach 116, or 22.3% of the 520 records in scope. That leaves close to four-fifths of the field spread across a long tail of firms filing a handful of records each — dense enough at the very top to require freedom-to-operate checks against named leaders, but open enough that a well-differentiated chemistry can still stake out a position.
Based on the 520-record assignee ranking.
Momentum
-78%
filings, 2021 to 2024
Activity has cooled sharply since 2021
Filings peaked at 23 in 2021 and dropped to 5 by 2024, a -78% swing over three years. Because publication lags filing by roughly 18 months, 2025-2026 counts are not yet reliable, but the 2021-2024 window alone is a genuine pullback rather than an artefact of reporting delay.
2021-2024 is the last window treatable as complete.
Technology mix
35.2% of 520
records touching C09D
Coating formulation, not deposition hardware, carries the claim density
C09D coatings-and-paints classifications touch over a third of records, roughly double the share of B32B laminates or C23C surface deposition. That skew suggests most competitive activity is happening in formulation chemistry — microcapsule composition, film-former selection, inhibitor payloads — rather than in application equipment or layered-structure engineering.
Class shares sum to more than 100% because records carry multiple IPC codes.
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Source: Patsnap Eureka. Co-assignee relationships and derived observations. Derived from a Patsnap search on Functional & Smart Coatings — Self-Healing Anticorrosion Coatings Patent Landscape covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
Players
Who is filing, and where the activity has gone quiet
The ranked leaders span steelmakers, marine coatings specialists, universities and materials-science entrants. Recent-year momentum data shows several previously active filers, including university groups, recording zero filings in the latest year — consistent with the broader post-2021 pullback rather than any single company's retreat.
Corporate leaders
32 records
top assignee
Steel and marine coatings firms anchor the top of the ranking
Large industrial filers with direct corrosion-exposure use cases — steel producers, marine paint makers, pipe and structural steel specialists — hold the largest single-assignee counts. Their filings cluster around protective coatings for infrastructure and transport assets rather than novel self-healing chemistry alone.
Ranking covers 100 companies across 520 records.
Academic entrants
0 in latest year
several university filers
University groups show sharply reduced recent activity
Multiple university-affiliated assignees in the ranking recorded zero filings in the latest year, including one with a -100% year-on-year change. This tracks with the field-wide decline after 2021 rather than indicating any single institution has exited the space permanently.
Recent-year momentum figures per assignee.
Co-filing patterns
10 pairs
co-assignee relationships
Collaboration is limited and concentrated among a few pairs
Only ten co-assignee pairs appear in the dataset, and the strongest of them links two units within the same corporate group. Cross-organisation joint filing is not yet a common strategy in this field, which leaves single-assignee filings as the dominant pattern for freedom-to-operate analysis.
Strongest pair recorded 10 shared filings.
Recent-year filing momentum by assignee
| Assignee | Recent year | YoY |
|---|---|---|
| Bunge Amorphic Solutions LLC | 0 | — |
| Nippon Steel Corporation | 0 | — |
| Chugoku Marine Paints, Ltd. | 0 | — |
| Thyssenkrupp Steel Europe AG | 0 | — |
| William Marsh Rice University | 0 | -100% |
| Sheffield Hallam University | 0 | — |
| GRAPHITE INNOVATION & TECH INC | 0 | — |
| Kansai Paint Co., Ltd. | 0 | — |
Source: Patsnap Eureka. Assignee-level momentum. Derived from a Patsnap search on Functional & Smart Coatings — Self-Healing Anticorrosion Coatings Patent Landscape covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
What's Next
Where to take this next
The dataset points to specific follow-up questions rather than a single conclusion.
Check freedom-to-operate against the named leaders
With 22.3% of records held by five assignees, a targeted prior-art search against those specific portfolios is more useful than a field-wide clearance exercise.
Run a freedom-to-operate search in EurekaWatch for the 2025-2026 filing correction
Publication lag means the apparent post-2021 decline may partially reverse as 2025-2026 filings continue to publish; revisit the trend in a future cut before drawing conclusions about market exit.
Track filing trends in EurekaMap the under-claimed IPC branches
Biocide-integrated and pipe-specific corrosion inhibitor sub-areas show lower filing density than core coatings chemistry, worth a closer claim-mapping pass.
Explore white space in EurekaSource: Patsnap Eureka. Forward-looking reading of the same dataset. Derived from a Patsnap search on Functional & Smart Coatings — Self-Healing Anticorrosion Coatings Patent Landscape covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
FAQ
Common questions about self-healing anticorrosion coating patents
The ranked leaders are dominated by industrial firms with direct corrosion-exposure applications, particularly steel producers and marine coatings specialists, alongside several university research groups. The top assignee holds 32 records out of 520 in scope, and the top 5 combined account for 22.3% of all records. That leaves the majority of the field distributed across a long tail of assignees filing only a handful of records each, so no single company controls the space outright.
Filings peaked in 2021 at 23 records and had fallen to 5 by 2024, a -78% drop over that three-year window. This decline predates any publication-lag distortion, since 2024 is the most recent year that can be treated as complete. Figures for 2025 and 2026 are still filling in — publication typically lags actual filing by around 18 months — so it would be premature to call the trend a permanent retreat from the technology.
Coatings and paints formulation, covered by IPC class C09D, appears in 35.2% of the 520 records, more than double the next largest class. Layered products (B32B), surface deposition (C23C) and coating processes (B05D) each sit in the 12-14% range. Smaller but distinct clusters exist around biocide-integrated formulations, pipe-fitting applications and condensation-polymer chemistries, suggesting formulation-level innovation outweighs equipment or process innovation in this field.
US20060042504A1, filed by the US Army and covering microcapsule-based self-healing coatings for lead-paint sealing, is one of the most-cited records in this dataset and functions as a key prior-art anchor for microcapsule chemistries. Whether it blocks a specific new filing depends on the exact microcapsule composition, size range and trigger mechanism claimed, since its claims are tied to particular film-former and dust-suppression payloads. Any new microcapsule-based self-healing coating filing should be checked against its claim scope directly rather than assumed to be blocked or clear.
The IPC composition shows lower filing density in biocide-integrated inhibitor payloads (A01N, 7.3% of records), pipe-specific corrosion inhibitor systems (F16L, 7.1%), and condensation-polymer self-healing matrices (C08G, 6.2%), compared with the heavily claimed core coatings chemistry in C09D. Co-assignee collaboration is also limited, with only 10 co-filing pairs across the dataset, suggesting cross-organisation joint development is underused as a strategy. Both patterns point to specific, narrower claim opportunities rather than a single large open area.
Answers are grounded in the same dataset. Derived from a Patsnap search on Functional & Smart Coatings — Self-Healing Anticorrosion Coatings Patent Landscape covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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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.