Traction Inverter for Construction Equipment Patent Landscape
The traction inverter patent space for construction equipment is a small, highly concentrated field with 31 patent families in scope, led decisively by General Electric. Activity has plateaued at maturity, with the United States as the dominant jurisdiction and the top five filers commanding an outsized share of the hundred largest filers’ combined output.
General Electric leads a tightly held, US-centric corpus
General Electric holds the top position in the applicant ranking with 28 patent records, well ahead of every other filer. Volvo Truck Corporation ranks second with 17 patent records, and Transportation IP Holdings LLC places third with 14 patent records.
The top five filers account for 80% of the ranked applicants visible in this query’ combined total, signalling a high concentration structure with a pronounced tier gap between the leading trio and all remaining applicants. Caterpillar and Atieva each hold 3 patent records, illustrating the steep drop-off beyond the top tier.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | General Electric Co | 28 | |
| 2 | Volvo Truck Corporation | 17 | |
| 3 | Transportation IP Holdings LLC | 14 | |
| 4 | Flanders Electric Motor Service LLC | 7 | |
| 5 | Ajith Kuttannair Kumar | 6 | |
| 6 | Robert Dean King | 6 | |
| 7 | Bunker Hill Technologies LLC | 6 | |
| 8 | Caterpillar Inc | 3 | |
| 9 | Atieva Inc (US) | 3 |
General Electric’s visible position, reinforced by close co-inventorship ties with named individual inventors and GE Global Procurement, suggests the core IP was built through systematic internal R&D rather than broad industry participation. Challengers entering this space face a well-established prior-art wall in electric vehicle propulsion classification.
Filings from approximately 2024 onward are subject to standard publication lag and may not yet fully reflect recent activity; the apparent flatness in those years should be interpreted with caution. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
A peaked filing curve dominated by electric propulsion classification
Annual filing volume and the distribution across IPC branches together indicate a field that reached its high-water mark around 2019 and has since settled at lower but nonzero levels, with technology coverage concentrated in electric vehicle propulsion and adjacent hybrid-control classes.
Annual filing trend
Activity spiked to 10 records in 2019, the clear peak year, then eased sharply through 2020–2021. A secondary uptick appeared in 2022 (7 records) before returning to low single-digit annual volumes. Years 2024–2026 should be read as under-counted due to publication lag; the apparent near-zero in 2026 does not signal a real decline.
↗ Hover for values · click a bar to ask EurekaTechnology composition
B60L (Electric vehicle propulsion) is the visible classification with 72 patent records, far ahead of B60W (Hybrid/joint vehicle control) at 18 and B60K (Vehicle propulsion and drive) at 14. Power electronics branches — H02P, H02K, H02M — each contribute fewer than 10 records, indicating that inverter-level circuit and motor-control IP is relatively sparse compared to system-level propulsion coverage. The construction-specific branch E02F (Excavating and earth moving) carries only 1 record, the lowest of any branch.
↗ 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.
System and method for controlling electrically dri…
A vehicle includes a power source, a controller, a converter configured to receive a first voltage from the power source and to convert the first voltage to a second voltage, an auxiliary inverter system electrically coupled to an output of the converter and to an accessory having an electric motor, the auxiliary inverter system configured to convert the… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Backward compatable battery DC charger and methods… | 35 |
| 2 | Electric drive vehicle retrofit system and associa… | 32 |
| 3 | Propulsion system | 25 |
| 4 | Method of operating propulsion system | 25 |
| 5 | Propulsion system | 14 |
| 6 | Backward compatible battery DC charger and methods… | 13 |
| 7 | System and method for reducing fuel consumption in… | 12 |
| 8 | Boost converters and methods for using an inverter… | 9 |
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 landscape structure means for R&D investment
Three structural features — maturity, high concentration, defined co-inventorship clusters, and a US-first jurisdiction profile — shape where incremental and differentiated R&D investment can gain traction.
Field has plateaued at a mature stage
The lifecycle evidence classifies this field as Mature, with annual filings having plateaued near their 2019 peak. New entrants face a body of established prior art anchored in electric vehicle propulsion. Incremental improvements to existing propulsion architectures are likely to encounter dense prior art, while differentiated approaches in adjacent branches may offer more room.
Lifecycle: MatureTop five filers hold 80% of the leading-hundred combined total
The top five filers account for 80% of the ranked applicants visible in this query’ combined total, with General Electric alone holding 28 patent records. This extreme concentration means most IP levers are controlled by a single incumbent. Challengers such as Volvo Truck Corporation (17 patent records) and Transportation IP Holdings LLC (14 patent records) occupy a distinct second tier, while the remaining filers each hold six or fewer records.
High concentrationGE-centered co-inventorship defines the collaboration network
The most active co-filing pairs all connect to General Electric: Lembit Salasoo, Ajith Kuttannair Kumar, and Robert Dean King each co-filed 6 records with General Electric, reflecting a structured inventor team rather than cross-company partnerships. General Electric also co-filed 2 records with GE Global Procurement. No significant cross-company collaborative filings appear outside the GE ecosystem.
Internal clustersUnited States is the clear primary protection market
The United States accounts for 29 patent records, with Europe (EPO) and WIPO (PCT) each at 13 — the PCT route signals some intent to pursue international coverage. Australia at 8 records and Germany at 4 records are the next most-protected markets. South Africa and Austria each appear at 2 records, and Canada, Mexico, and Peru each appear at 1 record, suggesting selective secondary-market protection rather than broad global strategy.
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 |
|---|---|---|
| SALASOO LEMBIT | General Electric Co | 6 |
| Ajith Kuttannair Kumar | General Electric Co | 6 |
| Robert Dean King | General Electric Co | 6 |
| General Electric Co | GE Global Procurement LLC | 2 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
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.
General Electric Co
General Electric holds 28 patent records, the largest position in the corpus by a wide margin. Its technology focus centers on B60L 50 (electric vehicle propulsion, 34 records), B60L 11 (electric vehicle propulsion, 23 records), and B60W 30 (hybrid/joint vehicle control, 14 records), indicating a system-level propulsion emphasis. The portfolio was built through a close-knit inventor team (Salasoo, Kumar, King), and its breadth across propulsion and hybrid-control sub-classes creates a strong prior-art perimeter.
28 patent recordsVolvo Truck Corporation
Volvo Truck Corporation holds 17 patent records and is classified as a new entrant by momentum data, with 9 recent patent records reflecting a rapid build-up from a minimal prior base. Its technology focus spans B60L 7 (electric vehicle propulsion, 9 records), B60L 1 (electric vehicle propulsion, 8 records), and B60K 6 (vehicle propulsion and drive, 6 records), suggesting an emphasis on drivetrain integration and energy management distinct from GE’s control-system orientation.
17 patent recordsFrequently asked questions
The corpus contains 31 patent families in scope, indicating a small and specialized field relative to broader electric vehicle drivetrain IP.
General Electric Co leads with 28 patent records, far ahead of the second-ranked Volvo Truck Corporation at 17 patent records and Transportation IP Holdings LLC at 14 patent records.
The evidence classifies this field as Mature. Annual filings have plateaued near their 2019 peak, and the multi-year growth rate is flat at 0%, indicating the core technology is well-established.
The United States is the primary jurisdiction with 29 patent records. Europe (EPO) and WIPO (PCT) each account for 13 patent records, followed by Australia at 8 and Germany at 4.
Yes. Power conversion circuits (H02M) account for only 6 patent records and 4% of the corpus, and the construction-equipment-specific class E02F (Excavating and earth moving) carries only 1 patent record — the lowest of any branch — despite being the primary application domain.
Volvo Truck Corporation and Flanders Electric Motor Service LLC are both classified as new entrants by momentum data. Volvo Truck Corporation accumulated 9 recent patent records, and Flanders Electric Motor Service LLC accumulated 4 recent patent records, both from a minimal prior base.
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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.
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