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Run your analysis now →https://www.patsnap.com/resources/blog/rd-blog/suspension-bushings-and-compliance-tuning-patent-landscape/ · Patsnap · data cut-off 2026-07-31 · downloaded from the live page
Patent Landscape · Automotive PowertrainSuspension Bushing and Compliance Tuning Patents: Who Holds the Ground
- 57.9% of filings sit with five companies. the top five assignees account for 11 of the 19 records in scope, while the remaining ranked leaders hold single-digit counts each.
- China dominates the receiving offices. 12 of the 19 records were filed via China, against 3 in the United States and 2 each at the EPO and in India.
- Filings cooled after a 2020 peak. filings peaked at 4 in 2020, and the 2021-to-2024 span shows a documented -50% change, from 4 down to 2.
19
Published Records
58%
Top-5 Share of All Records
-50%
Filing Growth 2021→2024
CN
Leading Jurisdiction
Filing growth compares 2021 (4 records) with 2024 (2) — 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 19 records in scope (CR5), not by the ranked leaders only.
Published byPatsnap Research··7 min readSourced from Patsnap Eureka
Field Overview
What this patent set actually covers
Suspension bushings sit at the interface between a vehicle's powertrain or axle and its body, absorbing road input while resisting the loads of acceleration and braking. This landscape is built from records that combine bushing hardware claims with tuning-specific language — dynamic stiffness, compliance steer, damping loss angle, durability under load, rubber compound formulation, and noise isolation — rather than bushing hardware alone. That combination narrows the set to 19 published records, small enough that individual filings move the picture and rankings should be read as directional rather than statistical.
The IPC composition confirms the field's centre of gravity: F16F, the springs-and-vibration-dampers class, appears on more than half the records, with B60K vehicle-propulsion classifications close behind. Publication typically lags filing by around 18 months, so the most recent years in any trend understate real filing activity and should not be read as a slowdown on their own.
Filing activity and technology mix, 2015-2026
Source: Patsnap Eureka. Assignee ranking and totals. Derived from a Patsnap search on Suspension Bushings and Compliance Tuning covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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Filing Data
Filing trend and technology composition
The record set is small enough that a single active filer can shift the yearly count, so treat the trend as directional rather than a market signal.
A 2020 peak, then a documented pull-back
Filings rose to a peak of 4 in 2020 and the 2021-to-2024 window shows a -50% change, from 4 down to 2 records. Because publication lags filing by roughly 18 months, 2025 and 2026 figures are still filling in and should not be read as continued decline.
Dampers and drive classes carry the claim weight
F16F (springs and vibration dampers) appears on 57.9% of the 19 records and B60K (vehicle propulsion and drive) on 36.8%, confirming that most claims are anchored in mechanical damping structure rather than in the vehicle system around it. Compound-chemistry class C08L and dedicated suspension class B60G each appear on a small minority of records, pointing to formulation and system-level integration as comparatively open ground.
Shares are the percentage of the 19 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Source: Patsnap Eureka. Filing trend and technology composition. Derived from a Patsnap search on Suspension Bushings and Compliance Tuning covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.
Go deeper on Suspension Bushings and Compliance Tuning with Eureka
This page is one run against one query. Ask Eureka your own question about suspension bushings and compliance tuning and every answer comes back with the patent numbers behind it.
Try EurekaRepresentative Filing
A representative claim: EV powertrain bushing structure
Representative Record · US20230184307A1
Suspension bushing and system for powertrain of electrical vehicle
BOGE RUBBER & PLASTICS ZHUZHOU CO., LTD.
A suspension bushing for a powertrain of an electric vehicle includes a mandrel, an outer sleeve and a rubber mainspring connected between the mandrel and the outer sleeve. The rubber main spring includes multiple main parts arranged at intervals and surrounding the outer contour of the mandrel. At least one side of each of the main parts is provided with an extending part. An end surface of the extending part and an end surface of each main part form a stepped structure.Filed by BOGE Rubber & Plastics Zhuzhou, dated 2023-06-15. The stepped extending-part geometry is the structural feature to watch when assessing freedom to operate around EV powertrain bushings.
Most-cited records in this set
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | EP0784163A1 | Variable stiffness bushing using magnetorheological elastomers | 72 |
| 2 | US3392971A | Suspension bushing | 32 |
| 3 | EP0784163B1 | Variable stiffness bushing using magnetorheological elastomers | 14 |
| 4 | CN113022284A | 一种动力总成悬置衬套 | 6 |
| 5 | CN111734764A | 一种电动汽车动力总成悬置用衬套及悬置系统 | 5 |
| 6 | CN214112256U | 两级隔振电机悬置衬套及电机悬置和电动汽车 | 3 |
| 7 | CN214874174U | 一种动力总成悬置衬套 | 2 |
| 8 | US20230184307A1 | Suspension bushing and system for powertrain of electrical vehicle | 2 |
| 9 | CN219191892U | 悬置衬套及车辆 | 1 |
| 10 | CN115839386A | 液封悬置衬套及汽车 | 1 |
Citation counts favour older filings simply because they have had longer to accumulate references; treat them as a signal of influence within this corpus, not of current commercial weight.
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.
Source: Patsnap Eureka. Citation counts and representative records. Derived from a Patsnap search on Suspension Bushings and Compliance Tuning covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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What the numbers say before you file
Three figures matter more than the raw count: where filings concentrate, how citation weight distributes, and where the technology classes leave gaps.
Concentration
57.9%
of 19 records held by top 5 assignees
The field is concentrated but not locked
Five assignees hold 11 of the 19 records in scope, and the ranked total of 15 companies covers every filer the dataset returns — there is no long invisible tail beneath it. A newcomer is not up against dozens of blocking families, but against a small number of well-defined ones.
Read as directional given the small record count.
Geography
12 of 19
records filed via China
Receiving office skews sharply to China
China accounts for 12 of the 19 records, versus 3 in the United States and 2 each at the EPO and in India. Freedom-to-operate work that only screens US and EP filings will miss the majority of the documented prior art in this field.
EPO and India each register 2 records.
Technology Mix
10.5%
of records classified under C08L
Compound formulation is a minority claim area
Only 2 of the 19 records carry a C08L polymer-composition classification, against 11 under F16F for damper structure. Most of the documented claim space is mechanical geometry, not rubber chemistry — which is where formulation-first filers may find more room.
B60G dedicated suspension classification appears on just 1 record.
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Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to suspension bushings and compliance tuning, with the prior art for and against each one.
Source: Patsnap Eureka. Co-assignee relationships and derived observations. Derived from a Patsnap search on Suspension Bushings and Compliance Tuning covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
Assignee Landscape
Who is filing, and how tightly they cluster
The ranking lists 15 companies with published records in this search — not a top-50 or top-100 cut, the full set the dataset returns. Momentum data shows no ranked assignee added a record in the latest available year, consistent with the 18-month publication lag rather than a stopped program.
Lead Cluster
3 records
held by the leading assignee
A shallow lead, not a runaway
The top-ranked assignee holds 3 of the 19 records, with fifth place at 2 and tenth place at 1. The gap between first and fifth is narrow enough that a well-drafted new filing can meaningfully shift relative position.
Top 10 combined account for 100% of all 19 records.
Co-filing
3 pairs
co-assignee pairings identified
Ford entities co-file among themselves
The strongest co-assignee pairs link Ford's own subsidiaries to one another, each pairing appearing twice. This looks like internal group filing practice rather than cross-company collaboration, and no co-filing pattern crosses company lines in this dataset.
All identified pairs involve the same corporate family.
Geographic Split
China-heavy
12 of 19 records via Chinese receiving office
Chinese OEMs and suppliers dominate volume
Alongside legacy Western filers, several Chinese vehicle makers and suppliers appear in the ranking, reflecting the China-heavy receiving-office split. Any competitive-intelligence read of this field needs Chinese-language source monitoring, not just English-language databases.
Receiving offices: China 12, US 3, EPO 2, India 2.
Recent-year filing momentum by assignee
| Assignee | Recent year | YoY |
|---|---|---|
| BOGE Rubber & Plastics (Zhuzhou) Co., Ltd. | 0 | — |
| Nobo Rubber Products Co., Ltd. | 0 | — |
| Ford Werke GmbH | 0 | — |
| Ford Motor Company | 0 | — |
| Tata Motors Ltd. | 0 | — |
| BOGE Elastmetall (Shanghai) Co., Ltd. | 0 | — |
| Dongfeng Motor Group Co., Ltd. | 0 | -100% |
| FORD FRANCE | 0 | — |
Source: Patsnap Eureka. Assignee-level momentum. Derived from a Patsnap search on Suspension Bushings and Compliance Tuning covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
Next Steps
Where to take this analysis
The dataset points to a concentrated but narrow field with clear geographic and technology-class skew. The next steps depend on whether the goal is freedom-to-operate, portfolio benchmarking, or identifying open claim space.
Screen China-filed prior art directly
With 12 of 19 records filed via China, an FTO search limited to US and EPO databases will miss most of the documented art. Chinese-language claim review is not optional for this field.
Explore the full record set in EurekaTest claim language against the F16F core
Damper-structure claims under F16F cover 57.9% of records. Drafting close to that class without differentiating on formulation or system integration risks close prior art collisions.
Run a claim comparison in EurekaTrack the under-claimed adjacencies
Sensing, data processing and motor-adjacent bushing design each register on only a single record. These are the branches to revisit before committing a drafting budget to the dense core.
Monitor white space in EurekaSource: Patsnap Eureka. Forward-looking reading of the same dataset. Derived from a Patsnap search on Suspension Bushings and Compliance Tuning covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
Questions Practitioners Ask
Frequently asked questions
In this dataset the leading assignee holds 3 of the 19 records in scope, with the top five assignees together holding 11 records, or 57.9% of the total. That is a shallow lead rather than a dominant one — the gap between first and fifth place is only a few records, so the ranking can shift with a handful of new filings. The ranked list covers 15 companies total, and it is the complete set the search returns, not a curated top-50 or top-100.
China is the receiving office for 12 of the 19 records in this search, compared with 3 in the United States and 2 each at the EPO and in India. This reflects both the concentration of EV and passenger-vehicle manufacturing in China and the presence of several Chinese OEMs and rubber-component suppliers among the ranked assignees. Anyone running freedom-to-operate analysis on this technology should include Chinese-language patent sources rather than relying on US or EP databases alone.
Filings peaked at 4 in 2020, and the documented change from 2021 to 2024 is a -50% drop, from 4 records down to 2. However, publication lags filing by roughly 18 months, so 2025 and 2026 counts are still incomplete and should not be read as continued decline. The honest read is a cooling from a 2020 peak, not a field in retreat.
A hydro bushing uses a fluid-filled chamber inside the rubber body to add hydraulic damping on top of the elastomer's own stiffness, which lets engineers tune dynamic stiffness and damping loss angle more independently than a solid rubber bushing allows. This dataset's search terms specifically capture both bushing types alongside compliance-steer and damping-loss-angle language, which is why F16F springs-and-dampers classification covers 57.9% of records. The distinction matters for claim drafting because fluid-chamber geometry and rubber-only geometry are assessed against different prior art clusters.
The technology composition shows dense claim activity in F16F damper structure (57.9% of records) and B60K propulsion integration (36.8%), but only single-digit record counts in compound formulation (C08L), dedicated suspension systems (B60G), and adjacent sensing or data-processing classes. Magnetorheological stiffness variation, real-time compliance-steer sensing, and EV-specific rubber compound formulation each show minimal documented claim coverage in this set. These branches are worth checking first for a filing strategy that avoids the densest prior art.
Answers are grounded in the same dataset. Derived from a Patsnap search on Suspension Bushings and Compliance Tuning covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish.Run this in Eureka MCP
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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.