Sealants for Construction and Industry Patents: Top Companies & Trends 2026
- Filing has declined since its 2019 peak of 89. the count has fallen most years since, down to 4 in the most recent (partial) year — a maturing rather than expanding filing base.
- C09K materials dominate the IPC mix at 1,588 records. well ahead of C08G condensation polymers (1,183) and C09J adhesives (932), showing formulation-additive claims outweigh backbone-chemistry claims.
- Europe leads receiving offices with 573 filings. ahead of the United States (489), Japan (288) and Canada (213), pointing to EPO as the primary battleground for sealant claim scope.
What this landscape covers
This landscape tracks 2,376 patent families filed between 2015 and mid-2026 across sealant chemistries used in construction and industrial applications, spanning silicone and polyurethane systems and the additive, cure and adhesion claims layered on top of them. The search combines sealant-specific terminology — movement capability, weathering, primerless adhesion, cure rate, modulus — with IPC classes covering materials for miscellaneous applications, adhesives, and condensation polymers, so it captures formulation patents rather than generic polymer chemistry.
Because publication typically lags filing by around 18 months, the most recent one to two years in any trend line will understate real filing activity; treat the tail of the chart as a floor, not a ceiling.
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Filing trend and technology composition
Two views of the same 2,376-family dataset: how filing volume has moved year over year, and how that volume splits across the IPC subclasses that define sealant patent scope.
A peak in 2019, then a steady decline
Filings rose to 89 in 2019 before easing back; by the midpoint year of 2022 the count had fallen to 44, and the trajectory through the most recent partial year is downward rather than flat. That pattern is consistent with a technology area where core formulation space has been substantially claimed and filers are consolidating rather than expanding.
Additive and formulation classes outweigh backbone chemistry
C09K (materials for miscellaneous applications) leads at 1,588 records, ahead of C08G condensation polymers at 1,183 and C08L polymer compositions at 1,013. C09J adhesives sits at 932 and C08K additive-use claims at 723, while C09D coatings and the addition-polymer and processing classes (C08F, C08J) trail well behind — the claim density sits in formulation and additive space more than in novel polymer backbones.
Shares are the percentage of the 2,376 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Sealants for Construction and Industry with Eureka
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Try EurekaThe records other filings build on
US8703896B2 — Polyurethane systems having non-sag, paintability, and primerless adhesion on concrete
A two-part non-sag polyurethane construction sealant or adhesive combining low modulus, high elongation, good paint adhesion, and primerless adhesion to concrete. The base component uses a polyol with optional epoxy silane and/or melamine; the activator component uses a prepolymer built from xylenol (with or without an additional polyol) reacted with a polymeric and/or aromatic isocyanate, again with optional epoxy silane and/or melamine.Filed by Sika Technology AG, published 2014-04-22.
View full record| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20080293910A1 | Adhesive formulatiions | 1,022 |
| 2 | US8349987B2 | Adhesive formulations | 1,005 |
| 3 | US4345053A | Silicon-terminated polyurethane polymer | 751 |
| 4 | US5990257A | Process for producing prepolymers which cure to improved sealants, and products formed thereby | 486 |
| 5 | US4625012A | Moisture curable polyurethane polymers | 408 |
| 6 | US5623044A | Polyurethane sealant compositions | 351 |
| 7 | EP0831108A1 | Curable silane-endcapped compositions having improved performance | 295 |
| 8 | US4780520A | High speed cure sealant | 273 |
| 9 | US4687533A | Bonding method employing moisture curable polyurethane polymers | 271 |
| 10 | US6512033B1 | Polyurethane sealant compositions | 270 |
Citation counts reflect influence within the searched corpus and skew toward older, foundational filings rather than current commercial relevance.
Each row carries its publication number; clicking a row searches Eureka by that number.
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Browse MCP servers →What the numbers mean for a filing or freedom-to-operate decision
Three patterns in this dataset matter more than the raw counts: where filing volume actually concentrates, how citation influence is distributed, and what the decline since 2019 signals about remaining claim space.
Additive and materials claims dominate the mix
C09K materials for miscellaneous applications outnumbers every other subclass, including the C09J adhesives class itself. That means a large share of active claim scope sits in additive packages, fillers and functional-material combinations layered onto sealant base chemistries, rather than in the base polyurethane or silicone backbones.
Filing has cooled sharply since 2019
The gap between the 2019 peak of 89 and the latest partial-year count of 4 is wide even after accounting for publication lag. Several of the largest historical assignees show zero filings in the latest year with year-over-year drops of -100%, consistent with a field where core formulations are settled and incremental filing has slowed.
Europe is the primary filing venue
The EPO receiving office leads with 573 filings, ahead of the United States at 489 and Japan at 288. Canada (213) and the PCT route via WIPO (172) round out a filing pattern weighted toward Europe and North America, with China's 158 filings comparatively modest given the size of its construction sector.
Citation leaders are decades old
The most-cited records in this corpus date back as far as the early 1980s, with the top two citation counts attached to older adhesive formulation patents. High citation counts here signal foundational influence within the searched set, not current commercial relevance — newer filings simply have not had time to accumulate citations.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to sealants for construction and industry, with the prior art for and against each one.
Who holds the claim space, and where it is thinning
Filing activity concentrates among a small group of long-standing sealant and specialty-chemicals assignees, several of which show no filings in the most recent year — a signal worth checking against each company's overall portfolio strategy before reading it as retreat.
Dow entities file jointly at the top of the network
The strongest co-assignee pairing in this dataset links two Dow-affiliated entities, followed by a Dow–Rohm and Haas pairing and a Dow link to an individual filer. Co-assignment here likely reflects internal corporate structure and joint-venture filing rather than cross-company technology sharing.
Several historical leaders show zero recent filings
Assignees including Dow Silicones, Sika Technology, General Electric, Dow Global Technologies, Tremco and Nitto Denko all show zero filings in the latest year, several with a -100% year-over-year drop. Given publication lag, this understates true filing activity but still marks a visible pullback from the 2019 peak.
Leading assignees file across the full chemistry stack
The same small group of assignees appears across materials (C09K), condensation polymers (C08G), polymer compositions (C08L) and adhesives (C09J) classes, indicating that leading sealant filers protect formulation, base polymer and additive claims together rather than specialising in one layer.
| Assignee | Recent year | YoY |
|---|---|---|
| Dow Silicones | 0 | -100% |
| Sika Technology AG | 0 | -100% |
| General Electric | 0 | — |
| Dow Global Technologies | 0 | — |
| Tremco Incorporated | 0 | — |
| Nitto Denko Corporation | 0 | — |
| Momentive Performance Materials Inc. | 0 | -100% |
| Kaneka Corporation | 0 | — |
Where to take this from here
The trend and assignee data point to a maturing field with pockets of open claim space rather than a growing one. The next steps depend on whether the goal is freedom-to-operate, white-space filing, or competitive monitoring.
Run a freedom-to-operate check on the C09K subclass
With 1,588 records concentrated in materials-for-miscellaneous-applications claims, any new additive or filler package needs clearance against this subclass specifically, not just against the broader C09J adhesives class.
Explore C09K prior art in EurekaMonitor the assignees showing -100% YoY drops
Several of the largest historical filers show zero activity in the latest year. Track whether that reflects a genuine pullback or a publication-lag artefact before treating their claim space as abandoned.
Set up assignee monitoring in EurekaScope a first claim in the identified white space
Under-claimed branches such as non-isocyanate polyurethane sealants and low-temperature fast-cure systems show comparatively thin filing density relative to the core chemistry classes.
Draft a claim scope in EurekaCommon questions about sealant patents
This landscape identifies 2,376 patent families published between 2015 and mid-2026 that match sealant-specific terminology such as movement capability, weathering, primerless adhesion, cure rate and modulus, combined with IPC classes covering materials for miscellaneous applications, adhesives and condensation polymers. That figure counts families, which is a fairer measure than raw document counts because it removes duplication from continuation filings and parallel filings across jurisdictions. The true figure for granted, enforceable patents will be smaller once expired and abandoned filings are excluded.
Filing activity peaked in 2019 at 89 records and has declined in most years since, falling to 44 by the 2022 midpoint and down to 4 in the latest, still-partial year. Because publication typically lags filing by around 18 months, the most recent one to two years understate true activity, but the overall trend from 2019 onward is downward rather than flat. Several of the largest historical assignees also show zero filings in the latest year, reinforcing that this is a maturing rather than expanding filing base.
C09K, covering materials for miscellaneous applications, leads with 1,588 records, ahead of C08G condensation polymers at 1,183 and C08L polymer compositions at 1,013. C09J adhesives sits at 932 and C08K additive-use claims at 723. This distribution shows that claim density concentrates in additive packages and formulation chemistry rather than in novel polymer backbones, which matters when scoping a freedom-to-operate search or deciding where to file a new formulation claim.
US8703896B2, assigned to Sika Technology AG, covers a two-part non-sag polyurethane sealant or adhesive combining low modulus, high elongation, paint adhesion and primerless adhesion to concrete, built from a polyol-based component and a xylenol-derived prepolymer component. It blocks formulations that match its specific combination of base and activator chemistry, particularly the xylenol-prepolymer route to primerless concrete adhesion. It does not block polyurethane sealants generally, nor silicone-based or non-isocyanate approaches to primerless adhesion, which remain open design-around routes.
Filing density is comparatively thin in non-isocyanate polyurethane sealants, fast-cure formulations effective below 5°C, low-VOC hybrid silane-terminated systems, and UV-stable pigmented sealants, relative to the dense core chemistry classes like C09K and C08G. These are areas where the core additive and backbone chemistry claims are already occupied but the specific performance combination has fewer filings against it. Any first claim in these branches should still be checked against the leading assignees' broader portfolios, since companies filing heavily in the core classes may hold adjacent unpublished applications.
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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.