Rare-Earth-Free Cobot Actuator Patent Snapshot 2026
The patent evidence snapshot for rare-earth-free cobot actuators is embryonic, with just 2 patent families on record — all held by a single applicant, Baker Hughes Oilfield Operations LLC. Activity peaked in 2020 and has since gone quiet, signaling either a stalled research thread or a domain that remains largely uncharted by the broader robotics and motor-design community.
Baker Hughes holds every patent family in this nascent field
Baker Hughes Oilfield Operations LLC is the sole ranked applicant, accounting for all 2 patent families in scope — a level of concentration that is absolute rather than merely high.
With one filer representing 100% of the top ranked applicants visible in this query’ combined total, there is no meaningful tier structure: no challenger, no fast-follower, and no academic institution on record.
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 1 | Baker Hughes Oilfield Operations LLC | 2 |
Baker Hughes’s position implies the intellectual property foundation was laid for an internal or vertical application — likely tied to downhole or industrial robotics — rather than as part of a competitive race in collaborative-robot motor design.
Patent publication typically lags filing by 18–24 months, so any work filed in late 2024 or 2025 may not yet be visible; the current corpus should be treated as a lower-bound snapshot. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
A single filing burst in 2020 defines the entire trend line
The filing timeline is a near-flat baseline with a solitary pulse in 2020, while the technology composition is entirely concentrated in one IPC branch. Both charts underscore how early-stage — and how narrow — this particular intersection of cobot actuator design and rare-earth-free materials currently is.
Annual filing trend
All 2 patent families were filed in 2020; every other year in the observed window shows zero activity. The most recent years (2024–2026) may be undercounted due to publication lag and should not be read as confirmed zeroes.
↗ Hover for values · click a bar to ask EurekaTechnology composition
Both patent families fall exclusively under B25J — Manipulators & robots — with no filings in adjacent classes such as motor design (H02K), magnetic materials (C22C), or drive control (G05B), highlighting how narrowly the existing IP is scoped.
↗ Hover for values · click a bar to ask EurekaHighly cited patent families surfaced by the query
Citation-heavy patent families returned by the query. Use this section as citation context, not as a curated list of the most topic-specific patents.
Autonomous fluid management using fluid digital tw…
Examples described herein provide a computer-implemented method that includes determining, using a digital twin, a task to be performed based at least in part on real-time data. The method further includes initiating at least one of a drone, a collaborative robot, or a warehouse system to perform the task. (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Autonomous fluid management using fluid digital tw… | 5 |
Ranked by total forward citations. Citation counts favour older and broadly cited patent families, and broad or adjacent patents may appear when they match the search scope. Treat this section as citation context, not as a curated list of the most topic-specific patents. Some patent titles may be shown in their original, non-English language where an accurate translation could not be guaranteed.
Assignee snapshot from the current evidence set
The applicants below are visible in this query result. Because the evidence set is relatively small, read this section as a directional snapshot rather than a full competitive ranking.
Baker Hughes Oilfield Operations LLC
Baker Hughes holds all 2 patent families in the corpus, both classified under B25J 9 — Manipulators & robots. Filing was concentrated entirely in 2020, with no subsequent momentum data available, indicating the initiative has not continued at a visible pace. The oilfield-operations context suggests the actuator work targets harsh-environment industrial robotics rather than mainstream collaborative-robot applications.
families: 2No challenger identified
No second applicant appears in the ranked corpus. Any organization seeking to enter this space would, by the available evidence, be entering as a de facto first mover rather than as a challenger to an established leader. Monitoring new PCT and US filings in B25J combined with H02K (motor design without rare earths) is the recommended tracking approach.
families: —Frequently asked questions
The corpus contains 2 patent families. Both were filed in 2020 and are held by Baker Hughes Oilfield Operations LLC, making this one of the smallest and least-contested patent landscapes in the cobot actuator space.
Baker Hughes Oilfield Operations LLC is the sole corporate applicant on record, holding all 2 patent families. The associated inventor names on record include Everhard Eliah, Norman Jason, Osgouei Reza Ettehadi, Shirangi Mehrdad Gharib, and Thompson Jr Charles A.
Both patent families are classified under B25J — Manipulators and robots. No adjacent classes such as H02K (electric machines), C22C (alloys), or G05B (control systems) are represented in the current corpus.
The lifecycle is classified as Decline. Annual filings peaked in 2020 and have eased back since. Note that the most recent 18–24 months may be undercounted due to publication lag, so any very recent filings might not yet appear.
Only the United States appears in the jurisdiction data, with 2 patent records. No PCT, EPO, Chinese, or other national office filings are on record, meaning international freedom to operate appears largely open based on current evidence.
Based on the evidence, the field is effectively uncontested outside of Baker Hughes’s 2020 filing activity. Adjacent technical areas — particularly H02K motor design and G05B/B25J control algorithms for rare-earth-free drives — show no existing filings in this corpus, representing potentially open ground for a technically capable entrant. These are observations of sparsity, not guaranteed commercial opportunities.
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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.