Counterbalance Forklift Patents: Top Companies & Filing Trends 2026
- 48.4% concentration. The top 5 of 82 ranked assignees hold 200 of 413 records in scope — nearly half the field sits with a handful of manufacturers.
- Filings down 62% since the peak cycle. Annual filings fell from 13 in 2021 to 5 in 2024, after a 2018 peak of 27 — a genuine pullback, not just publication lag.
- One subclass dominates the claim space. B66F (jacks & lifting devices) covers 91.5% of all 413 records, leaving fluid-pressure and steering-adjacent classes comparatively open.
Filing growth compares 2021 (13 records) with 2024 (5) — 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 413 records in scope (CR5), not by the ranked leaders only.
What this landscape covers
This dataset tracks 413 published records at the intersection of counterbalance forklift structure and load-safety mechanics — mast design, fork carriage, tilt cylinder control, stability triangle and residual capacity, load center distance, turning radius and axle load. It spans filings from 2015 through the 2026 data cut-off, drawing on United States, EPO, Canada, United Kingdom, Australia and Japan receiving offices.
The scope favours mechanical and control claims over pure electrification or battery chemistry, which explains why B66F so heavily outweighs the other IPC subclasses present. Read the filing trend against an 18-month publication lag: the most recent one to two years will always look thinner than they eventually turn out to be.
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Filing trend and technology composition
Annual filing counts and IPC distribution for the 413 records in scope, drawn directly from the underlying dataset.
Filing trend: a clear 2018 peak, then a real pullback
Filings ran from 4 in 2017 up to a peak of 27 in 2018, then fell to 13 by 2021 and 5 by 2024 — a 62% decline over that three-year span. 2025 and 2026 figures are still incomplete due to publication lag and should not be read as a continuation of decline on their own.
IPC composition: concentrated in lifting mechanics
B66F (jacks & lifting devices) appears in 91.5% of the 413 records, dwarfing F15B fluid-pressure systems (6.3%), B62D motor vehicles & steering (3.9%) and the smaller electrification-adjacent classes B60K and B60L. Because records can carry multiple IPC codes, these shares sum to more than 100%.
Shares are the percentage of the 413 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Counterbalance Forklift Design with Eureka
This page is one run against one query. Ask Eureka your own question about counterbalance forklift design and every answer comes back with the patent numbers behind it.
Try EurekaThe most-cited prior art in this space
US3893580A — Side and front tiltable lift truck mast
A lift truck mast supported from the truck frame by a main pair of universal connectors such as spherical bearings, a pair of tilt cylinders connected to the mast and to the truck by pairs of universal connectors for tilting the mast forwardly of the truck on said main pair of connectors, a side tilt cylinder connected to the mast for tilting the mast transversely of the truck on said main pair of connectors, and a side shift cylinder for actuating the mast laterally of the truck.Filed by Clark Equipment Company, 1975-07-08. Establishes an early multi-axis tilt architecture that later tilt-cylinder and side-shift claims must design around or build on.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US4942529A | Lift truck control systems | 180 |
| 2 | US6135694A | Travel and fork lowering speed control based on fork load weight/tilt cylinder operation | 146 |
| 3 | US5995001A | Method and apparatus for providing operating information to an operator of a fork lift truck | 117 |
| 4 | EP0343839A2 | Lift truck control systems | 81 |
| 5 | US4516116A | Apparatus for visually displaying the load-moment, axle-load, or payload of a vehicle | 54 |
| 6 | US4393959A | Hydraulic stabilizer for axle on mast lift vehicle | 52 |
| 7 | US4382743A | Loading apparatus with a tiltable and extendable fork carriage mounted thereon | 50 |
| 8 | US4274794A | Lift truck having rotatable platen for handling unpalletized loads and method for using same | 44 |
| 9 | US4755100A | Operator control system | 42 |
| 10 | US20030156935A1 | Fork movement assembly for lift trucks | 40 |
Ranked by citation count within the searched corpus. Older records accumulate more citations by virtue of age, so treat this as a signal of influence on downstream design, not of current commercial relevance.
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Browse MCP servers →What the data means for filing strategy
Three patterns stand out once the records are grouped by assignee, technology class and filing year.
The field is led by a small group, not a single firm
The leader holds 58 records against a fifth-place figure of 33 and a tenth-place figure of 10 — a steep drop-off rather than a single dominant player. That shape rewards filers who target specific mechanical sub-claims rather than trying to out-file the leader on volume.
Activity has cooled from its 2018 peak
Filings peaked at 27 in 2018 and had fallen to 5 by 2024, the last year with a complete publication record. That decline suggests the core mechanical claim space around mast and tilt-cylinder design is increasingly occupied, pushing new filers toward adjacent control and electrification classes.
Claim density sits almost entirely in one subclass
B66F covers the vast majority of records, while F15B, B62D, B60K and B60L each hold single-digit shares. High density in B66F signals occupied claim space, not that mast and lifting mechanics are exhausted as a design problem.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to counterbalance forklift design, with the prior art for and against each one.
Who holds the ground, and where it is thinning
Recent-year momentum figures show several long-standing leaders with no filings in the latest year, consistent with a broader slowdown after the 2018 peak rather than any one company's retreat.
Leaders have gone quiet in the most recent cycle
Several of the most active historical filers, including the two largest by volume, show no recorded filings in the latest year and year-over-year declines of -100% for some. Given publication lag, this understates true 2025-2026 activity but still points to a genuine pause after the 2018-2021 filing wave.
Joint filings are rare and mostly research-linked
The strongest co-assignee pairing links a major forklift manufacturer with a public research institute, suggesting some of the deeper mechanical R&D is being shared with outside labs rather than kept fully in-house.
Filing activity is US-centric with a strong EPO and Commonwealth tail
The United States leads with 145 filings, followed by Europe (EPO) at 74, then Canada, the United Kingdom, Australia and Japan. That spread indicates the technology is being protected across major industrial markets rather than concentrated in one jurisdiction.
| Assignee | Recent year | YoY |
|---|---|---|
| Crown Equipment Corporation | 0 | — |
| Raymond Ltd. | 0 | -100% |
| Clark Equipment Company | 0 | — |
| Toyota Industries Corporation | 0 | -100% |
| Hyster-Yale Group, Inc. | 0 | — |
| Combilift Research & Development | 0 | — |
| JLG Industries, Inc. | 0 | — |
| Nissan Motor Co., Ltd. | 0 | — |
Where to take this analysis
The dataset points to specific next steps depending on whether the goal is freedom-to-operate, portfolio strategy, or spotting an open filing window.
Map claims against the top assignees directly
With 48.4% of records held by five companies, a freedom-to-operate check should start with their specific claim language on mast tilt and fork carriage mechanisms before broadening the search.
Explore assignee claims in EurekaWatch the under-claimed control and sensing branches
F15B, B60T and G05G each hold single-digit shares of the 413 records, which is where new mechanical-control filings face less prior art density than the core B66F space.
Run a white space search in EurekaRe-check the 2025-2026 trend once publication catches up
The apparent decline to 5 filings in 2024 is real, but 2025-2026 figures will keep rising as publication lag closes; revisit the trend line in a future pull before drawing conclusions about current activity.
Track filing trends in EurekaCommon questions about counterbalance forklift patents
The dataset ranks 82 assignees, with the leader holding 58 of the 413 records in scope and the top 5 combined holding 200 records, or 48.4% of the field. That is a steep drop-off rather than one company holding an outright majority, so a freedom-to-operate review needs to check several of the leading filers, not just the single largest one. Fifth place sits at 33 records and tenth place at 10, showing the concentration tapers quickly after the top group.
Filings peaked at 27 in 2018 and had fallen to 5 by 2024, the most recent year with a complete publication record — a 62% decline from the 13 filings recorded in 2021. Because publication typically lags filing by about 18 months, the 2025 and 2026 figures in any dataset pull will look artificially low and should not yet be read as confirming further decline. Taken together, the trend through 2024 points to a genuine cooling from the 2018 filing wave rather than a data artifact.
B66F, the IPC subclass covering jacks and lifting devices, appears in 91.5% of the 413 records in scope, making it by far the densest claim area. Fluid-pressure actuator systems (F15B) and motor vehicle/steering claims (B62D) follow at 6.3% and 3.9% respectively, with electrification-adjacent classes like B60K and B60L holding under 2% each. That imbalance means core mast and lifting-mechanism claims are heavily occupied, while control, sensing and drive-integration claims sit on comparatively thinner prior art.
US3893580A, filed by Clark Equipment Company in 1975, describes a lift truck mast supported by universal connectors with separate forward-tilt, side-tilt and side-shift cylinders — an early multi-axis tilt architecture. Any new design using paired universal-connector mounts combined with independent forward and lateral tilt cylinders needs to be checked against this claim structure, since it predates and likely underlies much of the tilt-cylinder prior art cited across the corpus. Designers working on side-shift or multi-directional tilt mechanisms should treat this as a foundational reference point even though it is decades old.
The clearest gaps sit outside the dominant B66F lifting-mechanism class, in areas like electric drive integration with tilt-cylinder control, load-center-distance sensing tied to residual capacity display, and axle-load monitoring linked to stability-triangle alerts. These branches show materially lower filing density than core mast and tilt-cylinder mechanics, based on the IPC composition figures for this dataset. A first claim in one of these areas would likely combine a sensing or control element with the established mechanical stability framework rather than compete directly on mast geometry.
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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.