OSB & Structural Panel Patents: Top Companies & Filing Trends 2026
- Filing peaked in 2021 at 135 records, then fell 60% to 54 by 2024 — the last year with complete publication data.
- The top 5 assignees hold 22.7% of all 3,108 records, rising to 34.4% for the top 10 — concentrated, but with a long tail of single-digit filers behind them.
- Adhesive and polymer-composition classes (C08L, C09J, C08G) each cover 23-39% of records, meaning most claim pressure sits in binder chemistry, not panel structure itself.
Filing growth compares 2021 (135 records) with 2024 (54) — 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 3,108 records in scope (CR5), not by the ranked leaders only.
What this landscape covers
Oriented strand board and structural wood panel patents cluster around a narrow set of engineering problems: how strands are oriented and bonded, how the resulting board resists bending and internal-bond stress, and how it holds up under moisture cycling and edge swelling. The search scope in this dataset ties board and panel terms to those specific performance and process concepts rather than to wood-product patents generally, which is why binder and resin chemistry classes appear as heavily as structural-panel classes in the results.
Most of the activity here comes from adhesive and resin suppliers rather than panel manufacturers themselves, reflecting where the patentable value has concentrated: the bond chemistry that lets a strand-based panel meet structural and moisture-resistance specifications.
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Filing trend and technology composition
Annual filing counts and IPC subclass shares for the 3,108 records in scope, drawn from the same dataset used throughout this page.
A 2021 peak followed by a real decline
Filings rose from 74 in 2017 to a peak of 135 in 2021, then dropped to 54 by 2024 — a 60% fall over that three-year span. 2025 and 2026 figures are still incomplete because publication typically lags filing by around 18 months, so the most recent years should not be read as a continued slide.
Binder chemistry outweighs panel structure
B27N (particle/fibre board) leads at 41.8% of records, but C08L polymer compositions (38.6%) and C09J adhesives (28.7%) are close behind, and C08G condensation polymers add another 23.6%. Structural building components (E04C) sit at just 7.3%, underlining how much of the claim activity is chemistry-driven rather than structural-design-driven.
Shares are the percentage of the 3,108 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Oriented Strand Board and Structural Panels with Eureka
This page is one run against one query. Ask Eureka your own question about oriented strand board and structural panels and every answer comes back with the patent numbers behind it.
Try EurekaMost-cited prior art and a recent representative filing
Processing method for waste oriented strand board, waste oriented wood chips, and oriented strand board and preparation method thereof (US20230182343A1)
The disclosure covers a process for softening a waste oriented strand board so it can be flaked into wood chips, and a method for preparing new oriented strand board from the recovered material. Softening lets the waste panel be reduced with a disc flaker into usable wood chips rather than being discarded.Filed by Southwest Forestry University, published 2023-06-15.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US3164511A | Oriented strand board | 193 |
| 2 | US4246310A | High performance, lightweight structural particleboard | 188 |
| 3 | US8038790B1 | High performance non-combustible gypsum-cement compositions with enhanced water durability and thermal stabil… | 170 |
| 4 | US5718786A | Flat oriented strand board-fiberboard composite structure and method of making the same | 158 |
| 5 | US5470631A | Flat oriented strand board-fiberboard composite structure and method of making the same | 157 |
| 6 | US5525394A | Oriented strand board-fiberboard composite structure and method of making the same | 149 |
| 7 | US20030056873A1 | Production of high added value products from wastes | 147 |
| 8 | US20060218107A1 | Method for controlling a product production process | 125 |
| 9 | US5435954A | Method for forming articles of reinforced composite material | 117 |
| 10 | US6608162B1 | Spray-dried phenol formaldehyde resins | 110 |
Citation counts favour older records simply by virtue of longer exposure time in the corpus; treat them as a signal of influence on later filings, not of 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 say about the field
Four patterns stand out once filing volume, assignee concentration and technology composition are set side by side.
A concentrated top, then a long tail
The five leading assignees account for 22.7% of all records and the top ten for 34.4%, leaving the remaining two-thirds spread across a long tail of the ranked assignees plus unranked entrants. New filers are more likely to compete on a narrow chemistry variant than to challenge the leaders on volume.
A real post-peak decline, not a data artefact
Filings fell 60% from the 2021 peak of 135 to 54 in 2024, the last year with complete publication coverage. That is a genuine pullback in patenting activity rather than an effect of publication lag, which only affects 2025-2026.
Chemistry classes rival the structural class
B27N leads at 41.8%, but C08L polymer compositions (38.6%), C09J adhesives (28.7%) and C08G condensation polymers (23.6%) are each close behind. E04C structural building components trails at 7.3%, showing claims cluster around binder formulation more than panel architecture.
US and Europe lead receiving offices
The United States receives the most filings at 820, followed by the EPO at 421 and Canada at 402; WIPO PCT filings sit at 333. Australia and New Zealand trail well behind, suggesting protection strategies concentrate on North American and European markets first.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to oriented strand board and structural panels, with the prior art for and against each one.
Who is filing, and where activity is cooling
The leader in this dataset holds 220 records, well ahead of fifth place at 79 and tenth place at 70 — a steep drop-off rather than a gradual one. Recent-year momentum figures show several of the most active assignees at zero or sharply reduced filings in the latest year, consistent with the broader post-2021 pullback.
A clear volume leader
The top-ranked assignee holds 220 records, more than double the fifth-placed entrant's 79 — a gap that marks a genuine leader rather than a crowded top tier.
Several leaders went quiet in the latest year
Multiple assignees among the most active filers show zero records in the latest year, including drops described as -100% year-on-year from prior activity, echoing the field-wide decline from the 2021 peak.
Co-filing is limited and pair-specific
Only 10 co-assignee pairs appear in the dataset, with the strongest pairing linked to a single corporate family filing jointly under related entity names, and other pairs tied to specific supplier-partner relationships rather than a broad collaboration pattern.
| Assignee | Recent year | YoY |
|---|---|---|
| BASF SE | 1 | -67% |
| Georgia Pacific Chemicals LLC | 0 | — |
| Knauf Insulation SPRL | 0 | -100% |
| Bayer Corp | 0 | — |
| Akzo Nobel Coatings International BV | 0 | — |
| Huntsman International LLC | 0 | -100% |
| Huber Engineered Woods LLC | 0 | — |
| Johns Manville Corp | 0 | — |
Where to take this analysis
The figures on this page describe the field at a point in time. Turning them into a filing or freedom-to-operate decision means going deeper on the specific claims and assignees that matter to your product.
Check freedom-to-operate against the leader's portfolio
The top assignee's 220 records are worth screening claim-by-claim before committing to a binder or strand-orientation approach that overlaps its territory.
Explore assignee portfolios in EurekaTrack the under-claimed sub-areas
Moisture-cycling durability and edge-swelling treatments show lighter claim density than adhesive chemistry — worth monitoring for new entrants before the space fills in.
Set up white space alerts in EurekaCommon questions on OSB and structural panel patents
The dataset's leading assignee holds 220 records, well ahead of the fifth-ranked company at 79 and tenth place at 70, indicating a genuine concentration at the very top rather than a crowded field of near-equal filers. The top 5 assignees together account for 22.7% of all 3,108 records in scope, and the top 10 for 34.4%. The remaining filers form a long tail, many with only a handful of records each, so most of the field's activity outside the leaders is fragmented across smaller players.
Filings grew to a peak of 135 records in 2021, then declined 60% to 54 by 2024, the most recent year with complete publication data. That is a real pullback, not a data artefact. Figures for 2025 and 2026 are still incomplete because publication typically lags actual filing by around 18 months, so those years understate current activity and should not be read as confirming a further decline.
Particle and fibre board processing (IPC class B27N) covers 41.8% of the 3,108 records in scope, the largest single share. Polymer compositions (C08L) and adhesives (C09J) follow closely at 38.6% and 28.7%, with condensation polymers (C08G) at 23.6%. Because a single record can carry several IPC classes, these shares add up to more than 100%; the practical takeaway is that binder and resin chemistry claims are as dense, or denser, than claims on panel structure itself, which sits at just 7.3% for structural building components (E04C).
The IPC composition data shows structural building components (E04C) and polymer processing (C08J) carry lower claim density than adhesive and resin chemistry classes, suggesting more room to file around panel-level structural innovations than around binder formulations. Specific sub-areas worth checking include strand orientation angle control methods, internal bond strength testing approaches, and moisture-cycling durability treatments, all of which sit outside the densest classes in this dataset. Any filing strategy should still be checked against the leading assignees' specific claims before committing, since class-level density does not guarantee an open path on a given claim.
The most-cited record in this dataset is US3164511A, titled simply 'Oriented strand board', cited 193 times, followed by US4246310A on lightweight structural particleboard at 188 citations. These are older, foundational filings, and citation counts in a searched corpus naturally favour records that have had more years to accumulate citations. That means high citation counts signal historical influence on later filings rather than current commercial importance, and should be read alongside filing-date and assignee context rather than on their own.
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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.