Fiber Reinforced Actuator Patents: Leaders & Filing Trends 2026
A data-backed view of the fiber reinforced actuator patent landscape: who holds the concentrated top filings, where filing growth is accelerating, which IPC branches carry the most claim density, and where white space re
Filing growth = 2021 (2 records) → 2024 (8); 2024 is the last year we treat as complete. Top-5 share = the 5 largest assignees ÷ all 177 records in scope (CR5), not the ranked leaders only.
What the fiber reinforced actuator filing record shows
A fiber reinforced actuator uses embedded or wound fibers to constrain how a soft or composite body deforms under pressure, current or thermal load, giving it directional bending, twisting or extension that an unreinforced elastomer body cannot hold on its own. The patent record for this term is comparatively small — 177 records in scope — and it sits at the intersection of two much larger fields: soft robotics actuation and fiber-reinforced additive manufacturing. That intersection matters for freedom-to-operate work, because a filing that reads as a robotics patent on its face may in practice be blocked by claims written from the 3D-printing side of the art.
The filing trend and the receiving-office spread both point to a field still being staked out rather than one that has settled into a stable set of leaders. Growth from 2021 to 2024 is sharp, the assignee ranking has a short concentrated head and a wide flat tail, and the technology composition leans toward fabrication and materials classes over pure actuation or control classes. Later years in the trend are undercounted because publication typically lags filing by around 18 months.
Let an AI agent run this analysis on your own technology
Pick a task. Every answer cites the patents behind it.
Filing trend and technology composition
Three views of the same 177-record dataset: who is filing, when they filed, and what part of the actuator problem their claims cover.
Filing activity is accelerating, not flat
Filings ran at low single digits through the late 2010s, peaked at 10 in 2018, and after a dip climbed again from 2 filings in 2021 to 8 in 2024 — a +300% rise over that three-year span. 2025 and 2026 counts will keep revising upward as publications catch up with filing dates, so the recent-year dip in the raw chart should not be read as a slowdown.
Publication lags filing by roughly 18 months, so 2025 onwards are still filling in. Growth rates on this page therefore end at 2024; running them to the last bar would understate the field.
Fabrication claims outweigh pure actuation claims
B29C (shaping of plastics) covers 29.4% of the 177 records, and B33Y (additive manufacturing) another 13.6%, together outweighing the actuator-specific F15B class (7.3%) several times over. That split says the densest prior art in this space is about how the fiber-reinforced body is made, not how it is actuated or controlled — a distinction that matters when scoping a claim to avoid the most crowded ground.
Shares are the percentage of the 177 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Soft Robotics: Fiber Reinforced Actuator Patent Landscape with Eureka
This page is one run against one query. Ask Eureka your own question about soft robotics: fiber reinforced actuator patent landscape and every answer comes back with the patent numbers behind it.
Try EurekaThe most-cited records anchor the fabrication side of the art
US9835184B2 — Fiber-reinforced actuator (The Regents of the University of Michigan, 2017-12-05)
A fiber reinforced actuator includes first and second sets of fibers coupled with and arranged along a control volume to controllably constrain mobility of an actuator body. Fibers of the first set can be arranged with respect to fibers of the second set and with respect to a central axis to impart the actuator with various combinations of torsional and axial force responses. A third fiber may be included to form a helical actuator. A plurality of actuators can be coupled together for coordinated movement, thereby providing additional mobility directions, such as trans-actuator bending.Abstract excerpted from the granted specification; full claim scope should be read against the issued claims, not the abstract.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20140328963A1 | Apparatus for fiber reinforced additive manufacturing | 340 |
| 2 | US9579851B2 | Apparatus for fiber reinforced additive manufacturing | 189 |
| 3 | US9327453B2 | Three dimensional printer for fiber reinforced composite filament fabrication | 165 |
| 4 | WO2015009938A1 | Apparatus for fiber reinforced additive manufacturing | 158 |
| 5 | US5845945A | Tubing interconnection system with different size snap ring grooves | 155 |
| 6 | US6471477B2 | Jet actuators for aerodynamic surfaces | 107 |
| 7 | US20160252110A1 | Multi-Segment Reinforced Actuators and Applications | 93 |
| 8 | US20110060186A1 | Biological navigation device | 87 |
| 9 | US6045057A | Method and apparatus for spray applying fiber-reinforced resins with high ceramic fiber loading | 68 |
| 10 | US20030143027A1 | Water control gate and actuator therefore | 63 |
Citation counts favour older records by construction; treat them as a signal of influence within this corpus, not as a ranking of current commercial importance.
Each row carries its publication number; clicking a row searches Eureka by that number.
Put your own technology through the same analysis
Eureka on the web
When you want the answer in the next five minutes.
The agent works the prompt against patents and technical literature, citing every source.
Run your analysis now →MCP server & REST API
When it has to run inside your own pipeline.
Patent search, landscape analysis and assignee resolution as MCP tools. Drop them into any agent framework, or call REST directly.
Browse MCP servers →What the concentration and composition figures mean for filing strategy
The numbers below are drawn directly from the dataset and point to where claim space is occupied, where it is thin, and how fast the field is moving.
The head of the field is short
Five assignees account for 62 of the 177 records in scope, with the leader alone holding 30. The tenth-ranked assignee holds only 4, so the drop-off from the top of the ranking is steep rather than gradual.
Recent filing activity is accelerating
Filings rose from 2 in 2021 to 8 in 2024. That is the most recent year the trend can be read as complete; 2025 and 2026 figures will still be filling in as publications catch up with filing dates.
Fabrication claims dominate over control claims
B29C (shaping of plastics) and B33Y (additive manufacturing) together cover more of the record set than any actuator- or robotics-specific class, including F15B fluid-pressure actuators at 7.3%. Claim drafting aimed purely at motion or control logic is filing into comparatively open ground.
Filing activity is US-centred with a strong European second tier
The United States receives more than double the filings of the next-largest office, Europe (EPO) at 31, with WIPO/PCT, Germany, Israel and Australia making up a smaller but consistent secondary tier.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to soft robotics: fiber reinforced actuator patent landscape, with the prior art for and against each one.
Where to take this analysis
The dataset points to specific next steps for teams evaluating freedom-to-operate or looking for open claim territory.
Map the fabrication-vs-actuation boundary
Because B29C and B33Y claims outnumber actuator-specific classes, a targeted read of where fabrication claims end and actuation claims begin will narrow the real freedom-to-operate question faster than a flat keyword search.
Explore the IPC breakdownWatch the short list of concentrated leaders
With 35.0% of records held by five assignees, monitoring continuation and divisional filings from that short list is more efficient than tracking the full 88-assignee ranking.
Review the assignee rankingRe-check the 2025–2026 filing count later
Publication lag means the most recent two years understate real filing activity; revisit the trend chart once those cohorts have had time to publish.
Track the filing trendCommon questions about fiber reinforced actuator patents
The ranked field covers 88 assignees, but it is heavily front-loaded: the top five together hold 62 of the 177 records in scope, or 35.0%, and the single leader holds 30 of those on its own. Past the top ten, which together hold 49.2% of records, filing counts drop quickly to single-digit and one-off filers. That shape means due-diligence work should prioritise the concentrated head rather than trying to track the entire ranked list.
Filings grew sharply and recently: the count rose from 2 in 2021 to 8 in 2024, a +300% increase over that three-year span, after an earlier peak of 10 filings in 2018. The apparent dip in 2025 and 2026 in the raw data should not be read as a slowdown, because publication typically lags filing by around 18 months and those years are still being backfilled. Anyone using this trend to justify a filing decision should treat 2024 as the last complete data point.
The largest single class is B29C, shaping of plastics, covering 29.4% of the 177 records, followed by B33Y additive manufacturing at 13.6% and B64C aeroplanes and helicopters at 10.2%. Actuator- and robotics-specific classes such as F15B fluid-pressure actuators (7.3%) are comparatively thin. Because a single record can carry several IPC classes, these shares add up to more than 100% and should not be summed into a single total.
US9835184B2, assigned to The Regents of the University of Michigan and issued in December 2017, claims a fiber-reinforced actuator built from two sets of fibers arranged along a control volume to constrain how the actuator body deforms, with an optional third fiber to form a helical actuator and multiple actuators coupled for combined motion. Whether it blocks a specific new design depends on how closely the new fiber arrangement, coupling geometry and force-response combination match those elements as issued. Any freedom-to-operate opinion on this patent should be built from the granted claims themselves, not the abstract summarised here.
The technology composition data shows claim density concentrated in fabrication (B29C, B33Y) and aerospace structural (B64C) classes, while actuator-specific and biomedical classes such as F15B and A61M carry noticeably fewer records. That imbalance suggests less-claimed ground sits in actuation control, sensing integration and biomedical-specific fiber-reinforced actuator designs rather than in fabrication methods. A first claim aimed at that gap would need to be checked against the fabrication-side prior art that still touches nearly a third of all records.
Research Soft Robotics: Fiber Reinforced Actuator Patent Landscape in depth with Eureka
Go past this page: query the whole soft robotics: fiber reinforced actuator patent landscape corpus yourself, in your own scope.
Every answer comes back with patent numbers you can open.
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.