Universal Testing Machine Patents: Who Leads, Where Gaps Are 2026
- No dominant filer. the leading assignee holds only 5 of 106 records, and the top 5 combined account for just 16.0% of all filings in scope.
- Filing has plateaued. activity peaked at 14 records in 2023 and has not sustained that pace since, despite a decade of steady output from 2017 onward.
- China dominates the pipeline. 75 of the tracked filings route through the Chinese receiving office, far ahead of the United States at 11 and Europe at 6.
A mature test method, an unconsolidated patent field
Universal testing machines and the mechanical-property test methods built around them — load frame stiffness, extensometry, strain-rate control, grip design, standard compliance — sit on a base of decades-old core patents, several of which remain the most-cited records in this dataset. That does not mean the field is closed. The assignee ranking has no single company holding more than 5 of the 106 records in scope, and the top 10 combined reach only 27.4% of filings. For a test-and-measurement category with this much industrial history, that is a strikingly open ownership structure.
The practical reading for anyone evaluating freedom-to-operate here is that claim space is occupied unevenly: dense around the foundational load-frame and extensometer patents cited across the field, thin around newer instrumentation and data-processing layers bolted onto conventional test rigs.
Filing trend and technology composition
Two views of the same 106 records: how filing activity has moved year over year, and which IPC subclasses the claims actually sit in.
Filing trend, 2017-2026
Filings rose from 1 in 2017 to a peak of 14 in 2023, then held near the 2022 midpoint of 10 rather than continuing to climb. 2026 is a partial year (3 so far) and, as with any recent filing data, is understated because publication typically lags filing by around 18 months.
IPC subclass composition
G01N (material analysis and testing) covers 99.1% of the 106 records, as expected given the search scope. The more informative signal is the long tail beneath it: G01B (measuring length and dimensions) reaches only 12.3% of records, and everything else — data processing, additive manufacturing, hand tools — sits under 3%, marking those as adjacent rather than core claim territory.
Shares are the percentage of the 106 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Universal Testing Machines and Mechanical Testing with Eureka
This page is one run against one query. Ask Eureka your own question about universal testing machines and mechanical testing and every answer comes back with the patent numbers behind it.
Try EurekaThe most-cited records anchor the field
US6612189B1 — Tensile testing machine for variously cross sectional materials
A tensile testing machine built around two roll stands with gripping rolls for variously cross-sectioned specimens, one or both stands hanging, with a device for applying initial load to load cells placed between the stands before test start.Filed by WE PLAN Company; granted 2003-09-02.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | CN104215521A | 在室温到超高温下热-力-环境耦合作用测试装置及应用 | 105 |
| 2 | US5606168A | In situ tensile testing machine and sample for a scanning electron microscope | 39 |
| 3 | CN106525603A | 一种钼及钼合金棒、管材的高温拉伸检测设备及方法 | 31 |
| 4 | KR1020060098066A | Extensometer measurement device for tension tester | 27 |
| 5 | US3927558A | Determination of properties of metals | 27 |
| 6 | US6612189B1 | Tensile testing machine for variously cross sectional materials | 22 |
| 7 | CN103954512A | 低温环境下紧凑拉伸试样的断裂韧性测试装置及方法 | 21 |
| 8 | CN110031312A | 一种锈蚀预应力筋力学性能原位测试装置和方法 | 20 |
| 9 | US3938373A | Method and apparatus for tensile testing of metal foil | 20 |
| 10 | US5033309A | Apparatus for measuring shear stress and strain characteristics of adhesives | 19 |
Citation counts reward age within a searched corpus; treat them as a signal of influence on later filings, not 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.
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Three patterns stand out once the ranking, the trend line and the IPC mix are read together.
Leadership is thin, not absent
The leader holds 5 records and fifth place holds 3 — a shallow gradient rather than a dominant incumbent. Combined, the top 5 assignees cover 16.0% of the 106 records in scope, and the top 10 reach 27.4%. No single company's portfolio forecloses the field.
Growth has flattened, not accelerated
Filing activity climbed steadily from a single record in 2017 to a peak of 14 in 2023, but the pace since has not exceeded the 2022 midpoint of 10. That plateau, combined with a partial 2026 count of 3, suggests the category is holding steady rather than expanding.
Filing is heavily routed through China
China accounts for 75 of the tracked filings, well ahead of the United States (11), the EPO (6), India (5), the UK (3) and South Korea (3). Strategies built solely on US or European prior art will miss most of the active filing base in this category.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to universal testing machines and mechanical testing, with the prior art for and against each one.
A fragmented competitive set
The 100 companies in the ranking span steel producers, university labs, dedicated test-equipment makers and standards bodies. None controls enough of the field to set the terms for everyone else.
Test-equipment incumbents hold the top spot but not the field
The leading assignee's 5 records put it ahead of the pack, but the gap to fifth place (3 records) is narrow. That gradient signals a field where incumbency helps but does not lock out new filers.
Metallurgical research institutes file in clusters
Several of the strongest co-assignee pairs link a steel group's research institute to its own production or steel-vanadium subsidiaries, pointing to internally coordinated filing programmes around high-temperature and metal tensile testing rather than open licensing plays.
Momentum has shifted to newer entrants
Among tracked assignees, the strongest recent-year momentum is 2 filings from a steel producer, while several longer-established names in the ranking show zero filings in the latest year. That shift suggests the active filers today are not always the historical leaders.
| Assignee | Recent year | YoY |
|---|---|---|
| Angang Steel Co., Ltd. | 2 | — |
| Illinois Tool Works Inc. | 0 | — |
| Commonwealth of Australia | 0 | — |
| Pangang Group Panzhihua Iron & Steel Research Institute Co., Ltd. | 0 | — |
| Nanjing University of Aeronautics and Astronautics | 0 | — |
| WE PLAN | 0 | — |
| TINIUS OLSEN TESTING MACHINE | 0 | — |
| Schedel Innovation Research & Development Ltd. | 0 | — |
Where to take this analysis
The dataset points to specific next steps depending on whether the goal is freedom-to-operate, competitive tracking or drafting new claims.
Map claim scope around the most-cited records
The five most-cited records, several decades old, anchor the field's prior art. Any new filing in load frame stiffness or extensometer design should be checked against these before drafting.
Explore prior art in EurekaTrack recent-year momentum by assignee
Momentum has shifted toward newer or previously quieter filers. Watching which assignees add filings in the next 12-18 months, once publication lag clears, will show whether the plateau since 2023 is ending.
Set up assignee tracking in EurekaTest the under-claimed sub-areas
IPC classes covering data processing, additive manufacturing and standard-compliance automation sit under 3% of records. A drafting review of these branches against the core G01N claims could surface open space.
Run a white space search in EurekaCommon questions about this field
In this dataset the leading assignee holds 5 of the 106 records in scope, with the fifth-ranked company holding 3. That is a shallow lead rather than a dominant position, and the top 5 assignees combined account for only 16.0% of all filings. Anyone assessing competitive risk should look at the full ranked list rather than assuming one company controls the space, because the concentration data does not support that reading.
Filing activity rose from 1 record in 2017 to a peak of 14 in 2023, then settled back near the 2022 level of 10 rather than continuing upward. The partial 2026 count of 3 is not a sign of decline on its own, since publication typically lags filing by about 18 months and recent years are always undercounted. Taken together, the trend looks like a plateau rather than sustained growth or a clear downturn.
China is the dominant receiving office in this dataset with 75 of the 106 records, well ahead of the United States (11), the European Patent Office (6), India (5), the United Kingdom (3) and South Korea (3). A search or clearance strategy limited to US or European filings would miss the majority of the documented activity in this category. This geographic skew is worth factoring into any competitive monitoring plan.
IPC classes outside the core G01N material-testing category are thin: measuring and recording (G01D) and business data processing (G06Q) each cover only 2.8% of the 106 records, and hand tools, digital data processing and additive-manufacturing-related classes each sit under 2%. That leaves strain-rate control algorithms, integration between extensometers and data processing, and additive-manufacturing specimen testing as areas with comparatively little claim density relative to the core load-frame and grip-design patents.
US6612189B1, filed by WE PLAN Company and granted in 2003, claims a tensile testing machine using two roll stands with gripping rolls for variously cross-sectioned specimens, one or both stands hanging, plus a mechanism for applying initial load to load cells positioned between the stands. It is specific to that roll-stand and hanging-stand configuration rather than to tensile testing broadly, so conventional fixed-frame or clamp-grip universal testing machine designs sit outside its literal claim scope. Anyone designing a roll-stand-based grip mechanism with pre-loaded load cells should review its claims closely before finalising a design.
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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.