Traction Inverter Thermal Management Patent Snapshot
The traction inverter thermal management patent space is highly concentrated, with General Electric Co commanding the top position and the five largest filers together accounting for 93% of the hundred largest filers’ combined total. The field is still expanding on a multi-year basis following a 400% recent-window growth rate, though annual volume has eased from its 2022 peak and the most recent years carry additional publication-lag undercount.
General Electric Co leads a tightly held, early-stage field
General Electric Co sits at the top of the applicant ranking with 11 patent records, followed by Amulaire Thermal Technology Inc and Neapco Intellectual Property Holdings LLC — both recent entrants now each holding 5 patent records — then Audi AG and Ford Global Technologies LLC at 2 patent records each.
The top five filers together represent 93% of the ranked applicants visible in this query’ combined total, signalling an unusually tight concentration for a field still in its growth phase. The tier gap between General Electric Co and the challengers is meaningful but is already narrowing as the two new entrants ramp up.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | General Electric Co | 11 | |
| 2 | Amulaire Thermal Technology Inc | 6 | |
| 3 | Neapco Intellectual Property Holdings LLC | 5 | |
| 4 | Audi AG | 2 | |
| 5 | Ford Global Technologies LLC | 2 | |
| 6 | Magna Electronics Inc | 1 | |
| 7 | Ola Electric Mobility Ltd | 1 |
General Electric Co’s lead is reinforced by broad cross-domain coverage spanning electric vehicle propulsion, locomotive traction, and semiconductor packaging — a diversified position that challengers focused on single sub-domains will need time to match.
The most recent 18–24 months of filing data are subject to publication lag and likely understate current activity; conclusions about the current competitive balance should be treated as a lower bound. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
A 2022 activity spike and a diversified IPC mix define the structural picture
The annual filing trend and technology composition charts together reveal both the pace of entry into this field and the breadth of technical approaches being pursued across power electronics, packaging, and vehicle systems.
Annual filing trend
Activity was negligible through 2021, surged to a peak in 2022, and has since moderated — consistent with a field still expanding on a multi-year basis but past its single-year high point. Data for 2024–2026 are likely understated due to publication lag and should not be read as a sustained decline.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H05K (printed circuits and assemblies) is the visible IPC branch, reflecting the centrality of power-module packaging to thermal management solutions. H01L (semiconductor devices) and B60L (electric vehicle propulsion) follow closely, confirming that innovations span chip-level thermal interface design through to system-level vehicle integration. B61C (locomotives and railcars) has a notable share, indicating General Electric Co’s rail-traction heritage shapes the corpus materially.
↗ 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.
An integrated traction inverter current distributi…
The present disclosure relates to an integrated traction inverter current distribution and thermal management system (100). The system (100) features a motor (101) housed within a motor enclosure (103), with motor windings (113) to drive the motor. A power board (105) is disposed within the motor enclosure (103), including an inverter unit that convert DC… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | High power AC traction inverter cooling | 48 |
| 2 | Vehicular traction inverter temperature control sy… | 19 |
| 3 | Vehicle water-cooling heat sink plate having fin s… | 8 |
| 4 | 360 degree direct cooled power module | 8 |
| 5 | Molded power module with integrated exciter circuit | 7 |
| 6 | Multi-purpose traction inverter bus bar system | 4 |
| 7 | Vehicle water-cooling heat sink plate having fin s… | 3 |
| 8 | Vehicular traction inverter temperature control sy… | 3 |
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.
General Electric Co
General Electric Co holds 11 patent records — the largest position in the corpus — with technology emphasis spanning B60L (electric vehicle propulsion), B61C (locomotives and railcars), and H01L (semiconductor devices). This cross-domain breadth reflects the company’s integrated rail-traction heritage combined with power-electronics expertise. No momentum figure is available for General Electric Co in the recent-vs-prior window provided, but its absolute lead remains substantial.
11 patent recordsAmulaire Thermal Technology Inc
Amulaire Thermal Technology Inc entered as a new entrant with 6 patent records (5 in the recent window), concentrating on H05K 7 (printed circuits and assemblies) and B60K (vehicle propulsion and drive). Its trajectory is flagged as a new entrant, indicating activity building from a near-zero prior base. The narrow, packaging-focused technology profile positions it as a specialist challenger rather than a broad-platform competitor.
6 patent recordsFrequently asked questions
The corpus covers 16 patent families in scope. The applicant ranking is drawn from patent records, which can differ from family counts because a single family may generate multiple records across jurisdictions.
General Electric Co leads with 11 patent records, representing the largest single-applicant position in the corpus. The next-largest filers — Amulaire Thermal Technology Inc and Neapco Intellectual Property Holdings LLC — each hold 5–6 patent records and are classified as new entrants in the recent filing window.
The field is classified as Growth. Recent three-year filings are well above the prior three-year window at a 400% growth rate. Annual volume peaked in 2022 and has since eased, though recent years carry additional undercount from publication lag, so the moderation should not be read as a structural decline.
H05K (printed circuits and assemblies) is the leading branch, followed by H01L (semiconductor devices), B60L (electric vehicle propulsion), B61C (locomotives and railcars), and H02M (power conversion). This mix reflects innovations that span chip-level thermal interface design through to system-level vehicle and rail integration.
The United States leads with 12 patent records. Europe (EPO), China, and WIPO (PCT) each hold 3 patent records, with Australia and Canada at 2 each and Spain at 1. The corpus is US-centric, reflecting the headquarters of the visible filer, General Electric Co.
F28F (heat-exchanger details) and B60M (power lines for electric traction) each hold only 1 patent record in this corpus — the lowest share observed. Both are technically adjacent to inverter thermal management but remain sparsely claimed, making them worth watching for organisations with cross-disciplinary capability in thermal hardware or traction supply integration.
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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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