HVDC Transmission for Mining Operations Patent Landscape
HVDC Transmission for Mining Operations Patent Landscape in 2026
The HVDC transmission for mining operations patent space is a compact but accelerating field in its growth stage, with Caterpillar Inc commanding the largest single share and the top five filers collectively dominating the hundred largest filers. Filing activity has risen on a multi-year basis, with power supply and grid systems (H02J) and power conversion (H02M) together accounting for the majority of technical activity.
Caterpillar leads a concentrated field with a clear tier gap
Caterpillar Inc holds the top position in this space, followed by Cummins Inc, Innomotics GmbH, Applied Hybrid Energy, University of Manitoba, and ABB (Schweiz) AG. The top five filers account for 55% of the combined patent records of the hundred largest filers, signalling a highly concentrated competitive structure.
A meaningful tier gap separates the leader from the rest: Caterpillar’s count is 50% larger than the next-ranked applicant’s. Below the top six, counts drop to three or fewer patent records, indicating a long, sparse tail of occasional filers.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | Caterpillar Inc | 9 | |
| 2 | Cummins Inc | 6 | |
| 3 | Innomotics GmbH | 4 | |
| 4 | Applied Hybrid Energy | 4 | |
| 5 | University of Manitoba | 4 | |
| 6 | ABB (Schweiz) AG | 4 | |
| 7 | Hamilton Sundstrand Corporation | 3 | |
| 8 | ABB Technology Ltd | 3 | |
| 9 | Hitachi Energy Ltd | 3 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 10 | Siemens AG | 2 | |
| 11 | Siemens Industry Inc | 1 | |
| 12 | Shandong Haina Intelligent Equipment Technology Co., Ltd. | 1 | |
| 13 | Ernst Fredrik Werner Alexanderson | 1 | |
| 14 | Gerald Bernard Sheble | 1 | |
| 15 | Zhejiang University | 1 | |
| 16 | Allis-Chalmers Corporation | 1 | |
| 17 | The Dow Chemical Company | 1 |
This concentration suggests that a small group of industrial and power-electronics incumbents has established early IP positions. New entrants face a field where foundational power-supply and grid-system claims are already contested, but overall portfolio density remains low enough that targeted filings in adjacent branches could still differentiate.
Counts for the most recent 18–24 months are understated due to publication lag and should be interpreted as floor estimates rather than final totals. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Annual activity is rising and technology focus is narrowing around power systems
Two charts reveal where the field is heading: one tracks annual filing volume to show growth pace; the other maps the IPC class mix to show which technical routes attract the most attention.
Annual filing trend
Filing volume has been uneven year-to-year but shows a clear upward direction across the multi-year window, consistent with a growth-stage field. The recent-window growth rate stands at 33%. Years 2025 and 2026 are understated due to publication lag and should not be read as a slowdown.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H02J (power supply and grid systems) and H02M (power conversion, including AC/DC) together represent the two dominant technical routes. Vehicle-level branches (B60R, B60L), electric motors (H02K), conveying and material handling (B65G), and mine safety (E21F) each appear with noticeably lower representation, marking them as adjacent or under-served areas relative to the core power-electronics focus.
↗ 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.
Fault diagnosis method for HVDC transmission syste…
A fault diagnosis method for HVDC transmission systems based on sequence link prediction of SER events is provided. Specifically, an event knowledge graph is introduced, direct-current project historical cases are integrated, an abnormal event knowledge graph for HVDC transmission systems taking an SER abnormal event as a core is constructed, and… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Modular HVDC converter | 191 |
| 2 | Method for Determining Conductors Involved in a Fa… | 33 |
| 3 | Modular HVDC converter | 24 |
| 4 | Ac-DC converter responsive to a single signal in t… | 17 |
| 5 | Modular HVDC converter | 14 |
| 6 | Resource control by probability tree convolution p… | 11 |
| 7 | Medium voltage variable frequency drive with artif… | 5 |
| 8 | Method for determining conductors involved in a fa… | 4 |
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.
What the patent structure means for R&D investment decisions
Four structural signals — maturity, concentration, collaboration, and geography — shape where defensible IP positions can still be built and where the field remains open.
Growth stage: rising filings, early consolidation
The field is classified as Growth, with annual filings still rising and the recent-window growth rate at 33%. Because publication lag understates the most recent years, actual momentum is likely stronger than the raw counts suggest. This is early enough that IP positions in adjacent branches remain acquirable, but the window for establishing priority in core power-grid claims is narrowing as incumbents accumulate records.
Growth stageTop-heavy but lightly populated overall
The top five filers hold 55% of the combined patent records among the hundred largest filers, yet the absolute corpus of 31 patent families means the field is still small. This combination — high relative concentration, low absolute density — creates a paradox: the leading positions are well-defended within a niche, but the field as a whole lacks the saturation that would block a technically differentiated entrant.
High concentrationMinimal co-filing activity observed
Only one co-applicant pair is recorded in evidence: Siemens AG and Siemens Industry Inc, with a single co-filed patent record. This near-absence of collaboration suggests the field is being developed primarily through internal corporate programs rather than consortia or academic-industry partnerships. The University of Manitoba’s presence as an independent filer, rather than as a co-filer with industry, reinforces this pattern.
Low collaborationUS-centric filing with selective PCT and Australian coverage
The United States leads jurisdictional coverage, followed by WIPO PCT and Australia. Europe (EPO), Canada, and India each have smaller footprints, and China has only a single record despite the scale of its mining sector. This geographic skew suggests that IP protection strategies are currently focused on English-speaking mining markets and global patent routes, leaving Chinese and broader Asian markets relatively uncontested.
US-centricGo beyond the landscape: Eureka’s TRIZ Solution agent breaks down an R&D problem and returns patented concept solutions, each with a technical approach and cited patent & literature evidence.
| Applicant | Collaborator | Co-filings |
|---|---|---|
| Siemens AG | Siemens Industry Inc | 1 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
Caterpillar anchors power-grid claims; Cummins targets vehicle-level integration
The top two filers differ in technical route: Caterpillar concentrates on power supply and grid systems, while Cummins emphasises vehicle-level power conversion and motor integration. Both are recorded as new entrants in the recent filing window, indicating that their portfolios were built largely in the current growth phase.
Caterpillar Inc
Caterpillar holds 9 patent records, the largest count in the field, with primary focus on H02J 7 (battery and power-supply systems) and H02J 3 (grid-connected systems). Its momentum trend is recorded as a new entrant in the recent window, meaning its position has been built rapidly in the current growth phase rather than accumulated over decades. This trajectory suggests a deliberate strategic push into electrified mine-equipment power architectures.
patent records: 9Cummins Inc
Cummins holds 6 patent records and concentrates on B60R 16 (vehicle electrical systems), H02K 7 (rotating machines), and H02M 7 (AC/DC conversion) — a combination that points to integrated drivetrain and on-board power conversion rather than grid-side infrastructure. Like Caterpillar, Cummins is recorded as a new entrant in the recent window, positioning it as a fast-moving challenger building a complementary but distinct technical niche.
patent records: 6| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| Caterpillar Inc | 5 | ▲ new entrant |
| Cummins Inc | 1 | ▲ new entrant |
| University of Manitoba | 2 | ▲ new entrant |
| Hamilton Sundstrand Corporation | 2 | ▲ new entrant |
Under-served technical branches adjacent to the HVDC mining core
Several IPC branches sit at the margins of the current corpus with low record counts. These observations reflect relative sparsity and are not validated commercial opportunities, but two branches stand out for their plausible technical connection to HVDC mining applications.
E21F · Mine safety and ventilation
This branch carries only 4 patent records in the corpus and a 3% share of IPC occurrences, yet mine ventilation and safety systems are direct consumers of the stable DC power that HVDC architectures can supply underground. Applied Hybrid Energy is the primary filer here, leaving the branch open to competition. An entrant with HVDC power-distribution expertise could explore DC-powered ventilation control and safety monitoring as a technically adjacent and lightly contested route.
Search this in Eureka →B65G · Conveying and material handling
Conveyor systems are among the largest continuous power loads in surface and underground mining, making them natural candidates for HVDC bus integration. The branch holds only 4 patent records and a 3% share, with Applied Hybrid Energy as the sole identifiable filer. The combination of high industrial relevance, low filing density, and a realistic integration path via DC-powered belt-drive systems makes this an adjacent branch worth monitoring for IP positioning.
Search this in Eureka →How leading filers differ across technology routes
Strength of each leader across the main technology routes.
| Player | H02J 3 · Power supply & grid systems | H02M 7 · Power conversion (AC/DC etc.) | H02M 1 · Power conversion (AC/DC etc.) | H02J 7 · Power supply & grid systems | H02J 1 · Power supply & grid systems |
|---|---|---|---|---|---|
| ABB Technology Ltd | Strong · 4 | Strong · 3 | Strong · 3 | Absent | Moderate · 1 |
| Caterpillar Inc | Strong · 4 | Absent | Absent | Strong · 5 | Moderate · 2 |
| ABB T&D Technology Ltd | Strong · 3 | Strong · 3 | Strong · 3 | Absent | Absent |
| Cummins Inc | Absent | Strong · 5 | Absent | Strong · 3 | Emerging · 1 |
| Applied Hybrid Energy | Strong · 4 | Absent | Absent | Absent | Strong · 4 |
| Siemens AG | Absent | Strong · 6 | Absent | Absent | Absent |
Frequently asked questions
The corpus contains 31 patent families in scope. This is a compact, niche field relative to broader HVDC or mining electrification landscapes, though filing activity has grown 33% in the recent window.
Caterpillar Inc leads with 9 patent records, ahead of Cummins Inc with 6. The top five filers together account for 55% of the combined patent records of the hundred largest filers, indicating a highly concentrated competitive structure.
H02J (power supply and grid systems) and H02M (power conversion, including AC/DC) are the two dominant IPC classes. Together they represent the majority of technical activity, reflecting a core emphasis on grid integration and converter design rather than mine-specific applications.
The United States leads with 25 patent records, followed by WIPO PCT with 7 and Australia with 6. Europe (EPO), Canada, and India have smaller footprints, and China holds only 1 record, leaving Asian mining markets relatively uncontested from an IP perspective.
Evidence classifies the field as Growth stage. Annual filings are still rising and the recent-window growth rate stands at 33%. The most recent years (2025–2026) are understated due to publication lag, so actual momentum is likely stronger than raw counts indicate.
E21F (mine safety and ventilation) and B65G (conveying and material handling) each carry only 4 patent records and a 3% IPC share, despite being natural consumers of stable HVDC power in mining environments. Both branches have plausible integration paths with HVDC architectures and are lightly contested relative to the dominant H02J and H02M routes.
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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.
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