Structural Mechanics Patents: Who Leads, Where the Gaps Are 2026
- Concentrated at the top. The five leading assignees together hold 111 of 287 records in scope (38.7%), and the top ten hold 59.2% — filing here is not evenly spread across a long tail.
- Filing has cooled since its peak. 2019 was the peak year at 19 records; from 2021 (10) to 2024 (4), the last complete year, filings fell 60%.
- Software and materials testing dominate the IPC mix. G06F (digital data processing) touches 25.8% of records and G01N (material analysis & testing) 12.9% — well ahead of any single mechanical subclass.
Filing growth compares 2021 (10 records) with 2024 (4) — 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 287 records in scope (CR5), not by the ranked leaders only.
What the structural mechanics filing record shows
Structural mechanics patenting sits at the intersection of physical failure modes — contact stress, fatigue cracking, vibration, wear — and the digital and material-science tools used to detect and model them. Across 287 records in scope, the dataset spans classic mechanical subclasses like welding (B23K) and pumps (F04B) alongside a heavier presence of software (G06F) and testing (G01N) classes, reflecting how much of current activity is in monitoring, simulation and diagnostics rather than pure mechanical structure.
Filing is uneven both across assignees and across time. A small set of leaders accounts for well over a third of all records, while the annual filing count has fallen sharply from its 2019 peak through the last complete year of data. Because publication trails filing by roughly 18 months, the most recent one or two years in the trend understate actual filing activity and should not be read as a definitive slowdown on their own.
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Filing trend and technology composition
The following figures are drawn directly from the 287 records in scope for this search, covering publication dates from 2015 through the 2026 cut-off.
Filing trend, 2017–2026
Annual filings rose to a peak of 19 records in 2019, then declined; from 2021 (10 records) to 2024 (4 records), the last complete filing year, volume fell 60%. 2025 and 2026 figures are still filling in as publications catch up to filing dates.
IPC subclass composition
G06F (digital data processing) appears on 25.8% of the 287 records, followed by G01N (material analysis & testing) at 12.9% and B64C (aeroplanes & helicopters) at 8.0%. Because records can carry multiple IPC classes, these shares sum to more than 100% and should be read against the full record total, not against each other.
Shares are the percentage of the 287 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Structural Mechanics Patent Landscape with Eureka
This page is one run against one query. Ask Eureka your own question about structural mechanics patent landscape and every answer comes back with the patent numbers behind it.
Try EurekaMost-cited records and a representative filing
Safety and Stability Control Method against Vehicle Tire Burst (US20210213935A1)
This filing establishes tire blowout determination using tire pressure detection, status tire pressure and steering mechanics state modes, then coordinates vehicle braking, driving, steering and suspension control against the identified blowout state point. It sits at the applied end of structural mechanics — turning a mechanical failure signature into a real-time, multi-system control response for manned and unmanned vehicles.Filed by LU, SHAN; published 2021-07-15.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US6161080A | Three dimensional multibody modeling of anatomical joints | 545 |
| 2 | US20060243056A1 | Systems and methods for maintaining load histories | 144 |
| 3 | US20070068605A1 | Method of metal performance improvement and protection against degradation and suppression thereof by ultraso… | 138 |
| 4 | US20050116798A1 | Single substrate electromagnetic actuator | 125 |
| 5 | US20100100338A1 | Monitoring system | 118 |
| 6 | US20210213935A1 | Safety and Stability Control Method against Vehicle Tire Burst | 109 |
| 7 | US20140363481A1 | Bone replacement implants with mechanically biocompatible cellular material | 104 |
| 8 | US20210188252A1 | Safety and Stability Control System against Vehicle Tire Burst | 102 |
| 9 | US20110274566A1 | Magnetically driven micropump | 97 |
| 10 | US7908928B2 | Monitoring system | 79 |
Citation counts favour older filings that have had more time to accumulate citations within the searched corpus; treat them as a signal of influence rather than of current technical importance.
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Three patterns stand out once the raw counts are broken down: where citation weight concentrates, how tightly ownership is held, and which technical classes carry the bulk of recent activity.
Old anchor patents still carry the most citation weight
The most-cited record in scope, on three-dimensional multibody modeling of anatomical joints, carries 545 citations — far above the next-ranked records. This reflects age and foundational status within the corpus more than current commercial relevance, since older filings have had longer to accumulate citations.
Filing sits with a small group of repeat assignees
The top five assignees combine for 111 of the 287 records in scope (38.7%), and the top ten for 59.2%. With 99 companies ranked in total, that leaves a long tail of single- or low-volume filers competing for the remaining claim space around the leaders.
Co-filing is limited and clustered around one group
Only ten co-assignee pairs appear across the dataset, and the strongest pairing recurs across related pairings involving the same core group of named inventors and one corporate assignee. This suggests most structural mechanics filing here is done independently rather than through joint ventures or shared R&D programmes.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to structural mechanics patent landscape, with the prior art for and against each one.
| Assignee | Co-assignee | Shared families |
|---|---|---|
| HETRICK JOEL A | ERVIN GREGORY F | 10 |
| Hydril USA Manufacturing LLC | HUFF PHILIP A | 7 |
| HUFF PHILIP A | PRUDEN KEITH | 6 |
| HETRICK JOEL A | KOTA SRIDHAR | 6 |
| HUFF PHILIP A | KHANDOKER SHAFIQ | 5 |
| Flexsys Inc. | KOTA SRIDHARNMN | 4 |
| Flexsys Inc. | HETRICK JOEL A | 4 |
| Flexsys Inc. | ERVIN GREGORY F | 4 |
The strongest co-assignee pairing in scope appears 10 times, with two related pairings sharing an overlapping inventor group — a sign of a tight internal team rather than a broader industry consortium.
Who holds the ground, and where it is open
Ranking is by patent family count across the 287 records in scope; recent-year momentum reflects publications in the latest tracked year only, which understates true recent filing given the ~18-month publication lag.
One assignee sets the pace by a wide margin
The leading assignee holds 24 records, six ahead of the fifth-place holder at 18 and well ahead of the tenth-place holder at 8. That gap between first and fifth place is the clearest sign that a handful of players, not one dominant firm alone, define the field's core claim territory.
Several long-standing filers show no publications in the latest year
A number of assignees with meaningful historical filing counts, including several university and corporate research holders, show zero publications in the most recent tracked year. Given the publication lag, this is not conclusive evidence of exit, but it is worth checking against direct filing records before assuming continued activity.
Filing is US- and Europe-heavy, with PCT as a strong secondary route
The United States receives 107 filings and the EPO 55, with WIPO/PCT filings at 27 and Australia, Israel and China each in the low double digits. This points to a field where protection strategy centres on the US and European markets first, with PCT used to keep options open.
| Assignee | Recent year | YoY |
|---|---|---|
| University Rey Juan Carlos | 0 | — |
| Fujifilm Corporation | 0 | — |
| The Board of Trustees of the University of Illinois | 0 | — |
| Flexsys Inc. | 0 | — |
| McGill University | 0 | — |
| Hydril USA Manufacturing LLC | 0 | — |
| Battelle Memorial Institute | 0 | — |
| Caterpillar Inc. | 0 | — |
Where to take this next
The dataset points to specific follow-up questions rather than a single conclusion — use these to decide where deeper diligence is worth the time.
Check whether the 2024–2026 dip is real or a publication-lag artefact
Because publication trails filing by roughly 18 months, the drop after 2021 needs verification against filing-date records before it is treated as a genuine slowdown in the field.
Explore filing trends in EurekaMap claim scope around the top five assignees before filing
With 38.7% of records held by five assignees, a freedom-to-operate check against their specific claim language is a more efficient first step than a broad novelty search.
Run a claim comparison in EurekaTest the under-claimed sub-areas for genuine white space
Vibration-based detection and wear-reduction in dental and implant contexts show lighter ownership concentration; confirm this holds at the claim level, not just the class level.
Search white space in EurekaCommon questions about structural mechanics patents
Ownership is concentrated but not monopolised: the top-ranked assignee holds 24 of the 287 records in scope, the fifth-ranked holder has 18, and the tenth-ranked holder has 8. Together the five leading assignees account for 38.7% of all records, and the top ten account for 59.2%. Beyond that group, the ranking includes 99 companies in total, meaning most of the remaining records are spread across a long tail of lower-volume filers. Anyone entering this space should expect the bulk of relevant prior art to sit with that top group rather than being evenly distributed.
Filing peaked at 19 records in 2019 and has declined since; from 2021 (10 records) to 2024 (4 records), the last complete filing year, volume fell 60%. That said, publication lags filing by roughly 18 months, so the 2025 and 2026 figures in the trend are still incomplete and should not be read as confirming a continued decline. A fair read is that the field cooled from its 2019 peak through 2024, with the most recent trajectory still uncertain.
Software and testing classes lead by record count: G06F (digital data processing) appears on 25.8% of the 287 records in scope, and G01N (material analysis & testing) on 12.9%. Mechanical-specific classes follow, including B64C (aeroplanes & helicopters) at 8.0%, and F04B (pumps) and G10K (acoustics) each at 7.7%. Because a single record can carry multiple IPC classes, these percentages sum to more than 100% and should each be read against the 287-record total rather than against one another.
US20210213935A1 covers a safety and stability control method for vehicle tire blowout, combining tire-pressure-based blowout determination with coordinated control of braking, driving, steering and suspension systems. It is specific to the blowout-detection-to-multi-system-response pipeline described in its abstract, not to tire pressure monitoring or vibration-based failure detection generally. Anyone building an adjacent system, such as one triggered by a different failure signature or acting on a different subsystem combination, would need to compare their control logic against this filing's specific claim language rather than assume broad blocking coverage.
The most under-claimed areas sit adjacent to the dense IPC classes rather than far from them: vibration-mode-based failure detection, wear-reduction approaches in dental and implant contexts, fatigue-crack monitoring specific to prosthetics, and friction-coefficient control tied to welding processes all show lighter ownership concentration relative to their neighbouring classes. None of these are unclaimed outright, since some filings touch each area, but none show the concentrated ownership seen in the top-ranked assignees' core territory. A claim search focused specifically on these narrower combinations is more likely to surface real gaps than a broad search across the parent IPC classes.
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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.