Driveline NVH Patents: Leaders, Trends & White Space 2026
- Filing has already peaked and cooled. 2017 was the high point at 3 filings; the 2022 midpoint sits at zero, and the trend has not recovered since.
- Claim density sits in damping hardware, not acoustics. F16F springs and vibration dampers account for 14 of the tracked records, more than double any other IPC subclass.
- China dominates the receiving-office mix. 19 of the tracked filings route through China, against 2 each for Germany and the EPO and just 1 for the US.
Top-5 share is the combined record count of the five largest assignees divided by all 24 records in scope (CR5), not by the ranked leaders only.
What this landscape covers
Driveline NVH and gear whine control sits at the intersection of mechanical damping, transmission design and acoustic measurement. The dataset tracked here spans records filed between 2015 and mid-2026 that combine language around driveline NVH, gear whine and transmission noise with technical claim detail on transmission error, damping, modal analysis, microgeometry or structure-borne noise, filtered to the IPC classes covering gearing, acoustics and vibration dampers. It is a narrow, claim-language-driven cut rather than a broad survey of every powertrain-noise filing.
24 published records map to 24 distinct patent families, so the family and document counts are effectively identical here — there is little continuation or multi-jurisdiction re-filing padding the numbers in this corpus.
Filing trend and technology mix
Two views of the same 24 records: when the filings happened, and which technical subclasses carry the claim weight.
A short, front-loaded filing window
Filings peaked at 3 in 2017 and had fallen to zero by the 2022 midpoint. Because publication typically lags filing by around 18 months, the most recent one or two years will always look thinner than they eventually turn out to be, but a flat or declining midpoint on a dataset this size still points to a niche that has not attracted a fresh wave of filers.
Damping hardware outweighs acoustic measurement
F16F (springs and vibration dampers) covers 14 of the tracked records, well ahead of F16D (clutches and brakes) and F16H (gearing and transmissions) at 6 each, with G10K (acoustics and sound generation) trailing at 4. The pattern says most of the claimed value is in the physical damping path — springs, dampers, torsional isolators — rather than in signal-processing or acoustic-measurement methods.
Shares are the percentage of the 24 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Driveline NVH and Gear Whine Control with Eureka
This page is one run against one query. Ask Eureka your own question about driveline nvh and gear whine control and every answer comes back with the patent numbers behind it.
Try EurekaThe most-cited records in this corpus
US4537297A — Friction clutch driven plate
A friction clutch driven plate in which a friction facing carrier assembly rotates a limited amount relative to a hub, controlled by damping springs and a centrifugal friction damper built from eccentric collars pivoting on stop pins. At low speed the collars can tilt to permit relative rotation with light damping; at higher speed they lock, changing the damping behaviour with rotational speed.Filed by Automotive Products PLC and granted in 1985, this is one of the oldest and most-cited records in the corpus, and it defines a speed-dependent damping mechanism still referenced by later torsional-damper claims.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | CN109616092A | 具有低频减振降噪及隔声功能的超材料型轻质结构 | 34 |
| 2 | CN107956839A | 一种具有颗粒阻尼及电磁阻尼的复合可调式传动系统扭转减振装置 | 17 |
| 3 | DE3623627A1 | Method for operating a friction clutch | 12 |
| 4 | CN101901597A | 结构传递噪声和结构透射噪声的分离方法 | 9 |
| 5 | US4537297A | Friction clutch driven plate | 7 |
| 6 | CN209781498U | 一种钻床花键传动噪音的减噪降噪结构 | 3 |
| 7 | CN103883424A | 一种摩托车发动机 | 3 |
| 8 | CN203926666U | 汽车及其减速机 | 2 |
| 9 | CN103883424B | 一种摩托车发动机 | 1 |
| 10 | EP0083859A1 | Friction clutch driven plate | 1 |
Citation counts inside a searched corpus like this one skew toward older filings that have had more time to accumulate citations — treat them as a signal of influence on the field, 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 read-throughs from the trend, the IPC split and the citation table.
The window of active filing has narrowed
A peak of 3 filings in 2017 followed by a decline to zero at the 2022 midpoint suggests this specific claim intersection — NVH language plus transmission-error or modal-analysis detail — attracted a short burst of interest rather than sustained investment. New entrants filing now would face less recent prior art to design around, but also a smaller pool of active competitors to benchmark against.
Damping hardware carries most of the claim weight
Springs and vibration dampers (F16F) outnumber gearing (F16H), clutches (F16D) and acoustics (G10K) combined. Filers looking for open ground should note the smaller categories — B21D sheet-metal working and F02F engine cylinders each carry only 2 records — as thinner, not necessarily easier, territory.
Filing activity concentrates in one jurisdiction
China accounts for the large majority of receiving-office filings, with Germany, the EPO and the US together making up the remainder. A filer targeting global freedom to operate on driveline NVH claims needs to weight Chinese prior art heavily, since it is not evenly distributed across jurisdictions here.
Co-filing is rare in this corpus
Only two co-assignee pairs appear across the dataset, the strongest being a three-filing link between two Chinese vehicle manufacturers. Most records in this space are filed by a single assignee, which is consistent with damping hardware being developed in-house rather than through joint ventures.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to driveline nvh and gear whine control, with the prior art for and against each one.
Who is active, and where the gaps sit
Recent-year momentum across the tracked assignees is flat: every named assignee in the momentum data shows zero filings in the latest year, reinforcing the picture of a corpus past its filing peak rather than one with an active leader pulling ahead.
No assignee is currently accelerating
Every assignee tracked in the recent-year momentum data — spanning Chinese vehicle makers, a university and established transmission suppliers — shows zero filings in the most recent year. That is consistent with the overall trend line rather than a data artefact specific to any one filer.
One manufacturing pair stands out
The strongest co-assignee relationship in the dataset links two Chinese vehicle-industry entities across three filings; the next-strongest pair, linking a regional automotive unit to its parent group, appears only once. Joint filing is the exception here, not the pattern.
A China-heavy applicant base
With 19 of 24 records routed through the Chinese receiving office, the applicant base skews heavily toward domestic Chinese vehicle and component manufacturers, alongside a small number of European and US legacy filers such as Automotive Products and ZF Sachs.
| Assignee | Recent year | YoY |
|---|---|---|
| Automotive Products PLC | 0 | — |
| Liuzhou Wuling Automobile Industry Co., Ltd. | 0 | — |
| Guangxi Automobile Group Co., Ltd. | 0 | — |
| Guangdong Xiapeng Motorcycle Technology Co., Ltd. | 0 | — |
| Jilin University | 0 | — |
| SAIC Motor Corporation Limited | 0 | — |
| ZF Sachs AG | 0 | — |
| Qingdao Zhenghe Industrial Co., Ltd. | 0 | — |
Where to take this next
The landscape data points to a few concrete follow-ups depending on what you are trying to decide.
Check freedom to operate around damping hardware
With F16F claims accounting for more than half the corpus, any new torsional damper or spring-based isolator design should be checked against the dense cluster of Chinese and legacy European filings before committing to a claim shape.
Run a freedom-to-operate search in EurekaTrack whether filing picks up post-2022
Because publication lags filing by roughly 18 months, records from 2024-2026 are still arriving. Re-pull the trend in six to twelve months to see whether the flat midpoint was a genuine lull or a reporting artefact.
Set up a monitoring alert in EurekaMap the under-claimed acoustic-sensing branch
G10K acoustics records are a fraction of the F16F count, suggesting active noise-cancellation and sensing approaches to gear whine are comparatively open relative to passive damping hardware.
Explore white space in EurekaCommon questions on driveline NVH patents
Driveline NVH refers to noise, vibration and harshness generated by the powertrain's rotating and meshing components, most commonly gear whine from transmission gearing and structure-borne noise transmitted through housings and mounts. Patent activity in this space clusters around mechanical solutions — damping springs, torsional isolators, modal tuning of housings — because those are the levers manufacturers control most directly during design. The IPC mix in this dataset, weighted heavily toward F16F vibration dampers, reflects that hardware-first approach.
This corpus is dominated by Chinese vehicle manufacturers and component suppliers, with 19 of 24 receiving-office filings routed through China, alongside a smaller number of long-established European and US names such as Automotive Products and ZF Sachs. No single assignee shows recent-year filing momentum in the data, so there is no clear current leader pulling ahead of the field. Co-filing between assignees is rare, appearing in only two identified pairs.
Based on this dataset, filing peaked at 3 records in 2017 and had fallen to zero by the 2022 midpoint, indicating a decline rather than growth through the middle of the tracked window. Because publication lags filing by around 18 months, the most recent one to two years are likely undercounted and should not be read as a hard stop. Still, a flat midpoint on a 24-record corpus is a meaningful signal that this specific claim intersection has cooled since its 2017 high.
The technology composition shows F16F damping hardware heavily outweighing acoustic-measurement and sensing categories like G10K, which sits at only 4 records against F16F's 14. That imbalance points to comparatively open ground in active noise-cancellation, modal-analysis-based prediction tools, and microgeometry-driven gear mesh modification, none of which show the same claim density as passive spring and damper designs. A first claim in these branches would need to combine sensing or predictive modelling with an actuation or design step to differentiate from the existing damping-hardware art.
US4537297A, filed by Automotive Products PLC and granted in 1985, claims a friction clutch driven plate with a speed-dependent centrifugal damper built from eccentric collars and stop pins, allowing looser damping at low rotational speed and locked, tighter damping at higher speed. It is one of the most-cited records in this corpus, which signals lasting influence on later torsional-damper claim language even though the patent itself is decades old. Anyone designing a speed-variable damping mechanism for a clutch driven plate should review its claims closely, since citation frequency in this field tends to concentrate on foundational mechanical designs rather than the newest 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.