Integrated Robot Joint Modules Patents: Who Leads 2026
- 37.8% of all 45 records sit with the top five filers, concentration that has formed without a single dominant company: the leader holds 6 records against a tenth-place entrant at 1.
- 91.1% of records carry a B25J manipulator classification, while motor, cooling, spraying and material-handling angles each account for two or fewer records apiece — the module's supporting subsystems are largely unclaimed as separate inventive ground.
- Filings peaked at 14 in 2023 before receding, and China's receiving office accounts for 31 of 45 records, making it the office to search first for freedom-to-operate work.
Top-5 share is the combined record count of the five largest assignees divided by all 45 records in scope (CR5), not by the ranked leaders only.
What the integrated joint module patent record actually shows
An integrated robot joint module bundles a motor, a reducer, a brake and an encoder into a single housing rather than assembling them as discrete components on a robot arm. The patent record in scope — 45 published records spanning 2015 to the 2026 data cut-off — treats this integration as the defining inventive act: housings, shaft arrangements, and the mechanical interfaces between the driving, braking and encoding assemblies dominate the claims, far more than any single subsystem taken alone.
Filing activity is recent and concentrated: the earliest years in scope show no activity, and volume builds toward a peak in 2023 before the most recent, still-incomplete year. Because publication typically lags filing by around 18 months, the last one to two years understate real filing activity and should not be read as a slowdown.
Filing trend and technology composition
Two views of the same 45 records: how filing volume has moved year over year, and which IPC subclasses the claims actually sit in.
A short, front-loaded filing history
Activity starts at zero in 2017, builds through the intervening years, and peaks at 14 in 2023 — the single busiest year on record — before tapering into 2026, a year the dataset has not yet finished collecting.
One dominant class, a thin scatter of others
B25J (manipulators and robots) covers 91.1% of the 45 records, confirming that most applicants frame the joint module as a robotics invention first. H02K (electric motors) reaches 6.7%; every other subclass — spraying, metalworking, vehicle servicing, railway bodies, conveying, and control systems — holds just one record apiece, at 2.2% each.
Shares are the percentage of the 45 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Integrated Robot Joint Modules with Eureka
This page is one run against one query. Ask Eureka your own question about integrated robot joint modules and every answer comes back with the patent numbers behind it.
Try EurekaThe most-cited prior art in this space
Industrial robot arm and integrated joint module
The module packages a housing, a driving assembly, a speed-reduction assembly, a braking assembly and an encoding assembly into one unit. A stator sits embedded in an annular platform inside the first housing; a rotor connected to the output shaft turns inside it. The reduction and braking assemblies attach to opposite ends of the output shaft, and the encoder mounts on the side of the brake facing away from the drive — a stacked, end-to-end architecture rather than a side-mounted one.Filed by Shenzhen Yuejiang Technology Co., Ltd., published 2024-04-11.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US5355743A | Robot and robot actuator module therefor | 205 |
| 2 | WO1993011914A1 | Robot and robot actuator module therefor | 29 |
| 3 | WO2019140736A1 | 一种紧凑型机器人一体化关节模组及紧凑型机器人 | 9 |
| 4 | CN108032330A | 一种紧凑型机器人一体化关节模组及紧凑型机器人 | 9 |
| 5 | KR1020090027301A | Robot actuator module capable of easily expanding functions | 6 |
| 6 | CN112247973A | 内藏式机器人一体化关节模组 | 5 |
| 7 | KR1020090027302A | Robot actuator module having an independent function | 5 |
| 8 | CN116061229A | 协作机器人用的高集成度一体式关节模组 | 4 |
| 9 | CN217801798U | 制动与减速一体化的关节模组 | 4 |
| 10 | CN117340899A | 转矩补偿方法、装置、电子设备及存储介质 | 3 |
Citation counts accumulate over time, so older US and WIPO filings lead this table by volume — that reflects age and searchability inside the corpus, not present-day 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 readings of the same dataset, each pointed at a different practical question.
The top of the field is contested, not locked
Six records separate the leader from an open field, and the gap to fifth place is just a few filings. Top 10 combined reaches 55.6% of all 45 records — a majority, but not the kind of lockout seen in more mature hardware categories.
Claims cluster on the robotics framing, not the subsystems
Almost every record is classified as a manipulator or robot invention first. Motor design, thermal management and encoder mounting appear as supporting claims inside that framing far more often than as their own independent inventive focus.
China is the office to clear first
China accounts for 31 of the 45 records in scope, with South Korea, Europe and the United States each in single digits. Freedom-to-operate work that skips a China-first search is working from an incomplete picture of this field.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to integrated robot joint modules, with the prior art for and against each one.
Who is filing, and where the gaps sit
The ranked list covers 30 companies across the 45 records in scope — the full ranking the dataset returns, not a top-50 or top-100 cut.
A lead without lockout
The top-ranked filer holds 6 of the 45 records in scope, well ahead of tenth place at a single filing. That is a real lead, but it is not the kind of dominant share that forecloses new entrants from the space.
Most filers appear once or twice
Beyond the top ten, the ranking thins quickly into single-filing entrants — university labs, component specialists and smaller robotics integrators each holding one or two records. This is a field still being staked out, not one already divided.
Filing is regionally concentrated
China's receiving office carries 31 of 45 records; South Korea, Europe and the United States each sit at 3-4; WIPO PCT applications and a single Austrian filing round out the picture.
| Assignee | Recent year | YoY |
|---|---|---|
| Taihu Robotics (Shanghai) Co., Ltd. | 1 | 0% |
| Northwestern Polytechnical University | 1 | — |
| Shenzhen Yuejiang Technology Co., Ltd. | 0 | — |
| Robobit Co., Ltd. | 0 | — |
| Board of Regents, The University of Texas System | 0 | — |
| Suzhou Kangduo Robot Co., Ltd. | 0 | — |
| Tianjin Atom Robot Co., Ltd. | 0 | -100% |
| Hefei HIT Precision Transmission Co., Ltd. | 0 | — |
Where to take this next
The dataset points to specific follow-up work depending on what you are trying to decide.
Run a China-first freedom-to-operate check
With 31 of 45 records filed through China's receiving office, any clearance work that starts elsewhere is starting from an incomplete base.
Explore assignee filings in EurekaDraft around the thin subsystem classes
Motor, cooling, cable-routing and standardization angles each hold one or two records — narrow enough that a specific, well-scoped claim can still stand.
Map white space in EurekaTrack the leaders' next filings, not just their totals
The gap between the top-ranked assignee and the rest is narrow enough that recent-year momentum matters more than cumulative counts.
Set up assignee monitoring in EurekaCommon questions about integrated robot joint module patents
In this dataset it means a single housing that combines a drive motor, a speed-reduction stage, a brake and a position encoder, rather than a robot arm assembling those parts as separate components joined by external couplings. Most filings frame this as a manipulator invention under IPC class B25J, which covers 91.1% of the 45 records in scope. The mechanical stacking and interface between the sub-assemblies, not any one part alone, tends to be the inventive focus in claims.
The ranking covers 30 companies across the 45 records in scope, with the top-ranked assignee holding 6 records. The top five filers combined account for 37.8% of all 45 records, and the top ten reach 55.6% — a real lead at the top but not a lockout, since the gap to the tenth-ranked filer is just a single record. The rest of the ranking thins quickly into single-filing entrants, including university labs and smaller robotics integrators.
China's receiving office accounts for 31 of the 45 records in scope, making it the largest single source of filings by a wide margin. South Korea, Europe (EPO) and the United States each hold only three to four records, with a handful more filed as WIPO PCT applications or through Austria. A search that does not start in China is working from a minority of the field's documented filings.
The technology composition data shows heavy concentration in the core manipulator classification (B25J at 91.1% of records) and a thin scatter across supporting subsystems: motor design, thermal management, cable routing, spraying integration and material handling each sit at one or two records. These narrow branches — particularly cable routing through hollow shafts and reducer-integrated cooling paths — carry far less claim density than the core housing architecture, leaving room for a specific, well-scoped filing.
Publication typically lags filing by around 18 months, so the most recent one to two years in any patent trend are always undercounted at the time of data collection. This dataset's most recent year is explicitly partial, and the true 2025-2026 filing volume will only become visible in later data pulls. The dataset's real peak so far, unaffected by this lag, is 2023 at 14 filings.
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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.