Traction Inverter for Passenger Vehicles Patent Landscape
This field is in a growth phase, with General Electric Co holding a commanding lead and the top five filers accounting for 57% of activity among the hundred largest filers. Filing momentum has accelerated sharply in recent years, with several new entrants entering the space alongside established industrial players.
General Electric Co leads a concentrated but fast-growing field
General Electric Co ranks first with 25 patent records, placing it well ahead of GM Global Technology Operations LLC at 13 and Transportation IP Holdings LLC at 10. The top three applicants together account for a substantial share of the most active filers in this space.
Concentration among the top five is high: those five filers account for 57% of the combined total across the hundred largest filers. There is a notable tier gap between the leading trio and the mid-tier applicants, which range from 3 to 7 patent records each.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | General Electric Co | 25 | |
| 2 | GM Global Technology Operations LLC | 13 | |
| 3 | Transportation IP Holdings LLC | 10 | |
| 4 | The Trustees of Columbia University in the City of New York | 7 | |
| 5 | Kumar Ajith Kuttannair | 6 | |
| 6 | King Robert Dean | 6 | |
| 7 | Bunker Hill Technologies LLC | 6 | |
| 8 | Hexagon Purus North America Holdings Inc | 5 | |
| 9 | Chongqing Jinkang Powertrain New Energy Co Ltd | 4 | |
| 10 | Volvo Truck Corporation | 3 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 11 | Caterpillar Inc | 3 | |
| 12 | The Governing Council of the University of Toronto | 3 | |
| 13 | EleapPower Ltd | 3 | |
| 14 | Magna Powertrain of America Inc | 2 | |
| 15 | Vitesco Technologies GmbH | 2 | |
| 16 | Eaton Intelligent Power Ltd | 2 | |
| 17 | Dayananda Sagar College of Engineering | 1 | |
| 18 | Tau Motors Inc | 1 | |
| 19 | Arrival UK Ltd | 1 | |
| 20 | Hyundai Motor Co Ltd | 1 |
General Electric Co’s lead, reinforced by its deep collaboration network with named inventors, suggests that foundational propulsion-system IP is already anchored by a single incumbent. Challengers entering now must navigate that established position or differentiate into adjacent technical sub-domains.
The most recent 18–24 months of filings are likely under-represented due to standard patent publication lag; observed counts for 2025 and 2026 should be treated as minimums rather than final totals. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Filings are in sustained growth with electric propulsion dominating the technology mix
The annual filing trend and IPC class distribution together reveal both the pace of competitive activity and the technical focus areas shaping this space. Both charts point to a field still in active expansion, concentrated on core EV propulsion but with secondary clusters worth monitoring.
Annual filing trend
Filing activity was negligible before 2018, climbed modestly through 2022, then accelerated sharply: 11 records in 2023 and 20 in 2024. The lifecycle evidence confirms this as a genuine growth trend. The 2025 and 2026 tallies (3 and 1 respectively) are almost certainly understated due to publication lag and should not be read as a slowdown.
↗ Hover for values · click a bar to ask EurekaTechnology composition
B60L (Electric vehicle propulsion) is overwhelmingly dominant at 88 patent records, confirming that direct EV drive-train integration is the core technical focus. H02M (Power conversion), B60W (Hybrid/joint vehicle control), H02J (Power supply and grid systems), and B60K (Vehicle propulsion and drive) form a secondary cluster, each with materially lower counts, pointing to adjacent areas where activity is lighter relative to the core.
↗ 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.
Systems and methods for bi-directional onboard bat…
Presented are separately excited motor (SEM) drive systems, methods for making/using such systems, and vehicles equipped with such systems. A motor drive system includes a rechargeable battery unit and a multilevel power factor correction (PFC) device interposed between and electrically connecting the battery unit and an electric power source. The battery… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Power distribution and circuit protection for a mo… | 77 |
| 2 | Electric drive vehicle retrofit system and associa… | 32 |
| 3 | Propulsion system | 25 |
| 4 | Method of operating propulsion system | 25 |
| 5 | High-frequency direct current bulk capacitors with… | 21 |
| 6 | Vehicle electric supply system | 20 |
| 7 | Power converter for electric vehicle drive systems | 14 |
| 8 | Power converter for electric vehicle drive systems | 14 |
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 competitive structure means for R&D investment decisions
Four structural observations — maturity stage, concentration, collaboration patterns, and geographic spread — provide the most actionable framing for teams deciding where to place resources in traction inverter development.
Growth stage: filings are still rising
The lifecycle evidence classifies this field as Growth, with annual filings still rising and the most recent years understated by publication lag. A 311% growth rate over the measured window confirms the field has not yet plateaued. Early movers who file now can still establish durable prior-art positions before the space matures further.
Growth stageHigh concentration with a clear incumbent advantage
The top five filers hold 57% of activity among the hundred largest filers, and General Electric Co alone accounts for 25 patent records — nearly double the second-ranked applicant. This level of concentration means new entrants face a well-defended core and should evaluate freedom-to-operate carefully before investing in the dominant B60L propulsion branch.
High concentrationGE anchors the most active co-filing relationships
The most active co-filing partnerships all involve General Electric Co: Lembit Salasoo, Kumar Ajith Kuttannair, and Robert Dean King each co-filed 6 records with GE, pointing to a closely coordinated inventor-led portfolio. A separate, smaller collaboration exists between the Trustees of Columbia University in the City of New York and Tau Motors Inc (1 joint record), suggesting an emerging academic-startup linkage worth tracking.
GE-centric ecosystemUS-dominant with meaningful EPO and PCT coverage
The United States leads with 38 patent records, followed by Europe (EPO) and WIPO (PCT) each at 14, and Australia at 10. Canada and Germany each register 3 records. The US-centric pattern reflects where the dominant applicants are incorporated, but EPO and PCT filings indicate that leading players are pursuing international protection — a signal that this technology is viewed as globally commercializable.
US-led, global reachGo 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 |
| Kumar Ajith Kuttannair | General Electric Co | 6 |
| King Robert Dean | General Electric Co | 6 |
| The Trustees of Columbia University in the City of New York | Tau Motors Inc | 1 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
General Electric Co leads; GM Global Technology Operations LLC enters as the most active new challenger
The top two applicants differ in their technical emphasis and trajectory. GE’s position is established and broad; GM’s is newly formed and concentrated on motor integration alongside core EV propulsion.
General Electric Co
General Electric Co holds 25 patent records, the largest position in this corpus. Its technical focus spans B60L 50 (electric vehicle propulsion), B60L 11, and B60W 30 (hybrid/joint vehicle control), indicating broad coverage across both pure-electric and hybrid drive architectures. The collaborative inventor cluster — Salasoo, Kuttannair, and King — reinforces that this portfolio was built systematically rather than opportunistically.
patent records: 25GM Global Technology Operations LLC
GM Global Technology Operations LLC holds 13 patent records and is classified as a new entrant in momentum terms, meaning its recent filings represent a fresh strategic push rather than continuation of a prior position. Its technical emphasis is split between B60L 50 (electric vehicle propulsion) and H02K 11 and H02K 9 (electric motors and generators), suggesting a focus on integrated motor-inverter design — a differentiated angle relative to GE’s broader propulsion-system coverage.
patent records: 13| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| GM Global Technology Operations LLC | 12 | ▲ new entrant |
| General Motors Global Purchasing LLC | 5 | ▲ new entrant |
| The Trustees of Columbia University in the City of New York | 5 | ▲ new entrant |
| Hexagon Purus North America Holdings Inc | 5 | ▲ new entrant |
| Volvo Truck Corporation | 2 | ▲ new entrant |
Under-served technical branches adjacent to the dominant EV propulsion core
Several IPC branches appear at materially lower activity levels relative to B60L, representing areas where patent density is thinner. These observations are based on relative filing counts and do not by themselves confirm commercial opportunity — technical fit and freedom-to-operate must be assessed independently.
H02P · Control of motors and generators
H02P registers 10 patent records, representing 5% of the IPC branch distribution. Motor control algorithms — including field-oriented control, torque ripple suppression, and thermal management of the inverter-motor interface — are technically integral to traction inverter performance but appear under-represented relative to the core B60L propulsion branch. Teams with expertise in power electronics control theory may find a less contested entry path here, though they should verify freedom-to-operate against GE’s B60W 30 hybrid-control claims.
Search this in Eureka →H05K · Printed circuits and assemblies
H05K also registers 10 patent records at 5% of the branch distribution. Physical integration of power modules — gate-driver board layout, thermal interface materials, and high-density packaging for SiC or GaN switching devices — is a known engineering bottleneck for traction inverters but appears sparsely covered in this corpus. SF Motors Inc’s applicant-tech data specifically cites H05K 7 as a focus area, making it a visible but not dominant player; the branch remains relatively open for new contributors with packaging or substrate expertise.
Search this in Eureka →How leading applicants differ across IPC technology routes
Route coverage across the main technology branches in the current evidence set.
| Player | B60L 50 · Electric vehicle propulsion | B60L 11 · Electric vehicle propulsion | B60L 53 · Electric vehicle propulsion | B60L 58 · Electric vehicle propulsion | B60L 15 · Electric vehicle propulsion |
|---|---|---|---|---|---|
| General Electric Co | Strong · 30 | Strong · 18 | Absent | Emerging · 5 | Emerging · 4 |
| GM Global Technology Operations LLC | Strong · 9 | Absent | Moderate · 3 | Absent | Moderate · 3 |
| General Motors Global Purchasing LLC | Strong · 4 | Absent | Emerging · 1 | Strong · 7 | Moderate · 2 |
| The Trustees of Columbia University in the City of New York | Strong · 7 | Absent | Absent | Absent | Strong · 5 |
| King Robert Dean | Strong · 6 | Strong · 6 | Absent | Absent | Absent |
| Kumar Ajith Kuttannair | Strong · 6 | Strong · 6 | Absent | Absent | Absent |
Frequently asked questions
General Electric Co leads with 25 patent records, approximately double the count of the second-ranked applicant, GM Global Technology Operations LLC at 13. GE’s position is reinforced by a closely coordinated inventor-led portfolio and broad coverage across electric and hybrid propulsion branches.
The lifecycle evidence classifies this field as Growth, with a 311% increase in filing activity over the measured window. Annual records rose from near zero before 2018 to 20 in 2024. The 2025 and 2026 figures are likely understated due to publication lag and do not represent a slowdown.
The United States leads with 38 patent records, followed by Europe (EPO) and WIPO (PCT) each at 14, and Australia at 10. Canada and Germany each have 3 records. Leading applicants are pursuing multi-jurisdictional protection, indicating global commercial intent.
The highest-cited work in the evidence covers power distribution and circuit protection for mobile systems (77 citations), electric drive vehicle retrofit systems (32 citations), and propulsion system architectures (25 citations each for two separate records). These represent the foundational prior art that later filings are building upon.
Yes. The most active co-filing relationships all involve General Electric Co: Lembit Salasoo, Kumar Ajith Kuttannair, and Robert Dean King each co-filed 6 records with GE. A separate collaboration exists between the Trustees of Columbia University in the City of New York and Tau Motors Inc with 1 joint record, suggesting an emerging academic-startup linkage.
H02P (Control of motors and generators) and H05K (Printed circuits and assemblies) each register 10 patent records, representing 5% of the IPC distribution each — substantially less than the dominant B60L branch. Motor control algorithms and high-density power module packaging are technically integral to traction inverter performance but appear sparsely covered in this corpus.
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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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