Electronics Cooling Patent Landscape 2026
Electronics Cooling Patent Landscape in 2026
The electronics cooling patent space is moderately concentrated, with Haier US Appliance Solutions commanding a decisive lead and the top five filers collectively holding 28% of the hundred largest filers’ combined volume. Annual filing volume has eased back from its 2018 peak, though a cluster of new entrants signals continued directional interest in thermal management for semiconductors and data-center hardware.
Haier leads a moderately concentrated field with a clear tier gap below the top two
Haier US Appliance Solutions holds the dominant position with 138 patent records, nearly double the second-ranked Hamilton Sundstrand at 73. This gap is the defining structural feature of the competitive landscape.
The top five filers — Haier US Appliance Solutions, Hamilton Sundstrand, General Electric, Trane International, and Rocky Research — together account for 28% of the hundred largest filers’ combined total, indicating moderate rather than extreme concentration. A sizable mid-tier of specialized players follows, including IBM, CoolIT Systems, Bergstrom, and Google.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | Haier US Appliance Solutions Inc | 138 | |
| 2 | Hamilton Sundstrand Corp | 73 | |
| 3 | General Electric Co | 42 | |
| 4 | Trane International Inc | 32 | |
| 5 | Rocky Research Inc | 29 | |
| 6 | Solvcor Technologies LLC | 29 | |
| 7 | International Business Machines Corporation | 28 | |
| 8 | CoolIT Systems Inc | 23 | |
| 9 | Bergstrom Inc | 22 | |
| 10 | Google LLC | 21 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 11 | J R Thermal LLC | 21 | |
| 12 | Inertech IP LLC | 20 | |
| 13 | Lawrence Livermore National Security LLC | 19 | |
| 14 | Cooligy Inc | 19 | |
| 15 | Emerson Climate Technologies Inc | 16 | |
| 16 | Haier Smart Home Co Ltd | 16 | |
| 17 | RTX Corp | 15 | |
| 18 | Sylvan Source Inc | 15 | |
| 19 | Ericsson (Telefonaktiebolaget LM Ericsson) | 15 | |
| 20 | Imam Abdulrahman Bin Faisal University | 14 |
Haier’s lead reflects a broad refrigeration and cooling platform strategy, while Hamilton Sundstrand’s strong aerospace-thermal focus positions it as a distinct second-tier anchor. The presence of IBM and Google signals that digital infrastructure cooling is increasingly a corporate R&D priority rather than a purely supplier-driven concern.
Records from approximately 2024–2026 are subject to publication lag and are likely under-counted; the apparent low volume in those years should not be interpreted as a true activity decline. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Filing volume has eased from its 2018 peak; refrigeration and heat-exchange dominate the technology mix
The annual filing trend and IPC technology composition together reveal a field that peaked around 2018 and has since moderated, while the branch mix shows a dominant core in refrigeration and heat-exchange apparatus with meaningful secondary clusters in semiconductor and printed-circuit cooling.
Annual filing trend
Activity climbed to a peak of 97 records in both 2018 and 2021, then declined to the mid-50s through 2024–2025. Records for 2025–2026 are almost certainly under-counted due to publication lag and should not be read as a continued drop.
↗ Hover for values · click a bar to ask EurekaTechnology composition
F25B (Refrigeration & heat pumps) and F28D (Heat-exchange apparatus) are the dominant IPC branches, reflecting the field’s industrial cooling heritage. H05K (Printed circuits & assemblies) and H01L (Semiconductor devices) form a significant secondary cluster, indicating growing alignment with electronics-specific thermal challenges.
↗ 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.
Aircraft electronics cooling apparatus for an airc…
The invention relates to an improved aircraft electronics cooling system for an aircraft having a liquid cooling system (<b>2</b>), the aircraft electronics cooling system providing a thermal coupling between an electronic device (<b>40</b><i>a, </i><b>40</b><i>b, </i><b>40</b><i>c, </i><b>40</b><i>d, </i><b>42, 44</b>) to be cooled and the liquid cooling… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Heat exchange apparatus | 464 |
| 2 | Devices using a medium having a high heat transfer… | 425 |
| 3 | Microencapsulated phase change material slurry hea… | 230 |
| 4 | Cryoprobe | 211 |
| 5 | Method and apparatus for achieving high reaction r… | 182 |
| 6 | Small scale chip cooler assembly | 181 |
| 7 | Devices using a medium having a high heat transfer… | 176 |
| 8 | Cooling microfan arrangements and process | 174 |
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 factors — lifecycle stage, applicant concentration, collaboration patterns, and geographic coverage — together shape where new entrants and incumbents should focus their R&D and filing resources.
Field is in decline from a 2018 peak
The lifecycle evidence classifies electronics cooling as in decline, with annual filing volume easing back from a 2018 peak. This signals that broad platform patents in core refrigeration and heat-exchange are likely well-staked, reducing the return on undifferentiated filing. Entrants should target narrow technical gaps — such as chip-level liquid cooling or phase-change materials — rather than replicating existing coverage.
Lifecycle: DeclineModerate concentration with a pronounced leader–challenger gap
Haier US Appliance Solutions at 138 patent records is nearly twice the size of second-ranked Hamilton Sundstrand at 73, creating a clear tier-one/tier-two split. Below the top two, the field fragments quickly across specialized players in aerospace, data-center, and semiconductor cooling. This fragmentation below rank two creates room for focused challengers to establish defensible positions in adjacent niches without directly competing with Haier’s broad platform.
Concentration: ModerateCo-filing is concentrated within the Haier corporate family
The most active co-filing relationships are between Haier US Appliance Solutions and Haier Smart Home (15 joint records) and between Haier US Appliance Solutions and Qingdao Haier Refrigerator (13 joint records), indicating that collaborative filing activity is primarily an intra-group coordination mechanism rather than a cross-industry ecosystem signal. A single record links Haier US Appliance Solutions with a third party. Cross-company or university-industry collaboration appears sparse in the evidence, suggesting an opportunity to build differentiated IP through external partnerships.
Collaboration: Intra-groupUS-dominant filing with selective international coverage
The United States is the primary protection venue, followed by Europe (EPO) and WIPO (PCT) for international reach. India ranks fourth, ahead of Germany, Canada, and Japan, reflecting an emerging-market protection strategy by some filers. China, despite being a major manufacturing hub for electronics and cooling components, ranks ninth, suggesting a potential gap in Asian protection that competitors could exploit.
Geography: 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 |
|---|---|---|
| Haier US Appliance Solutions Inc | Haier Smart Home Co Ltd | 15 |
| Haier US Appliance Solutions Inc | Qingdao Haier Refrigerator Co Ltd | 13 |
| Haier US Appliance Solutions Inc | Utilitybet LLC | 1 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
Haier dominates on refrigeration; Hamilton Sundstrand anchors aerospace thermal management
The two clear-tier leaders differ sharply in technology focus and trajectory: Haier built its position on broad consumer and commercial refrigeration cooling, while Hamilton Sundstrand’s portfolio is concentrated in aircraft-environment thermal systems.
Haier US Appliance Solutions
The field’s dominant filer at 138 patent records, with technology emphasis concentrated in F25B 21 (thermoelectric refrigeration and heat pumps), F25D 11, and F25D 17 (refrigerators and cooling systems). This broad refrigeration platform is reinforced by co-filing with Haier Smart Home and Qingdao Haier Refrigerator. Momentum data for the Haier entity is not separately provided in the applicant momentum evidence, consistent with its established incumbent status.
patent records: 138Hamilton Sundstrand
Second-ranked at 73 patent records, Hamilton Sundstrand’s focus is distinctly aerospace-thermal: B64D 13 (aircraft equipment), F25B 1, and F25B 5 indicate a cycle-refrigeration and aircraft-cabin cooling emphasis. Recent momentum shows a sharp contraction (▼ –86% vs. prior period), signaling a deceleration from prior active filing and a possible strategic pivot or portfolio consolidation within the aerospace segment.
patent records: 73| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| Hamilton Sundstrand Corp | 3 | ▼ -86% |
| General Electric Co | 4 | ▲ new entrant |
| Trane International Inc | 5 | ▲ new entrant |
| CoolIT Systems Inc | 5 | ▲ new entrant |
| Bergstrom Inc | 3 | ▲ new entrant |
Under-served adjacent branches in semiconductor and printed-circuit cooling
Five IPC branches appear at lower relative share despite sitting at the technical intersection of electronics cooling and high-growth hardware segments; these are observations of relative sparsity and should be evaluated against each organization’s specific technical capabilities before treating them as investment targets.
H05K · Printed Circuits & Assemblies
With 299 patent records and an 8% share among the branches observed, H05K is the most active of the relatively under-served adjacent areas, covering thermal management integrated directly into PCB structures. As chip power densities rise, board-level thermal design is becoming a first-order constraint rather than an afterthought. Entrants with materials or process expertise in substrate design have a plausible technical path here, particularly given that incumbent leaders are concentrated in refrigeration rather than PCB-level cooling.
Search this in Eureka →H01L · Semiconductor Devices
H01L appears with 295 patent records at a 7% share, covering cooling solutions integrated at the semiconductor device level — including chip packaging and on-die thermal structures. This branch is technically adjacent to the field’s dominant heat-exchange core but remains relatively sparse relative to the scale of semiconductor packaging innovation occurring in the broader industry. Organizations with expertise in advanced packaging, liquid metal cooling, or embedded microchannel structures have a realistic entry path through this branch.
Search this in Eureka →How leaders differ across technology routes
Strength of each leader across the main technology routes.
| Player | F28D 15 · Heat-exchange apparatus | H05K 7 · Printed circuits & assemblies | H01L 23 · Semiconductor devices | F25B 21 · Refrigeration & heat pumps | F28F 3 · Heat-exchanger details |
|---|---|---|---|---|---|
| Haier US Appliance Solutions Inc | Emerging · 16 | Absent | Absent | Strong · 91 | Absent |
| General Electric Co | Moderate · 15 | Moderate · 10 | Absent | Strong · 41 | Absent |
| Google LLC | Strong · 20 | Moderate · 7 | Strong · 14 | Absent | Absent |
| CoolIT Systems Inc | Strong · 12 | Strong · 7 | Strong · 11 | Absent | Strong · 11 |
| J R Thermal LLC | Strong · 21 | Absent | Absent | Absent | Moderate · 10 |
| Delphi Technologies Ltd | Strong · 12 | Strong · 7 | Strong · 12 | Absent | Absent |
| International Business Machines Corporation | Absent | Strong · 14 | Moderate · 6 | Absent | Moderate · 7 |
Frequently asked questions
Haier US Appliance Solutions leads with 138 patent records, nearly double the second-ranked filer, Hamilton Sundstrand, at 73 patent records. General Electric ranks third at 42.
Annual filing volume peaked at 97 records in 2018, held at a secondary peak of 97 in 2021, then eased to the mid-to-high 50s through 2024–2025. Records from 2025 onward are likely under-counted due to publication lag and do not reliably indicate the current pace of activity.
F25B (Refrigeration & heat pumps) and F28D (Heat-exchange apparatus) are the two leading branches. H05K (Printed circuits & assemblies) and H01L (Semiconductor devices) form a meaningful secondary cluster, reflecting growing interest in chip-level and board-level thermal management.
The United States is the primary protection venue, followed by Europe (EPO) and WIPO (PCT) for international reach. India ranks fourth, ahead of Germany and Canada. China ranks ninth, which may represent a gap relative to its manufacturing significance.
General Electric, Trane International, CoolIT Systems, and Bergstrom all show a ‘new entrant’ trend signal in recent filing data, indicating activity that was absent or negligible in the prior comparison period. Hamilton Sundstrand, by contrast, shows a sharp deceleration of ▼ -86% versus its prior period.
The evidence classifies the field as in decline, with annual filings easing back from the 2018 peak. This suggests that broad foundational claims in core refrigeration and heat-exchange are largely staked, shifting the strategic focus toward narrower technical differentiations in chip cooling, phase-change materials, and integrated thermal architectures.
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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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