Vapor Chamber Cooling Patents: Leaders & Filing Trends 2026
A data-backed view of vapor chamber cooling patents: filing trends, leading assignees, technology composition and the most-cited prior art, with white-space analysis for R&D and IP teams.
Filing growth = 2021 (26 records) → 2024 (17); 2024 is the last year we treat as complete. Top-5 share = the 5 largest assignees ÷ all 207 records in scope (CR5), not the ranked leaders only.
What the vapor chamber cooling patent record actually shows
Vapor chamber cooling sits at the intersection of packaging, thermal engineering and semiconductor design: a sealed metal chamber with a working fluid and wick structure moves heat away from a hot component far more efficiently than a solid heat spreader. The 207 records in scope span 2015 through the 2026 cut-off, filed mostly through the United States, with meaningful volume from Europe, WIPO/PCT filings, India and Germany. Filing activity is not evenly spread: H05K (printed circuits & assemblies) and H01L (semiconductor devices) together anchor the majority of the corpus, while heat-exchange apparatus classifications under F28D and F28F show the mechanical side of the same claims.
The assignee ranking is a genuine mix of computing hardware majors, telecom equipment makers, lighting and industrial cooling specialists, and a long tail of single-filing entrants. That spread matters for freedom-to-operate work: a crowded core class does not mean every adjacent use case is equally covered.
Filing trend and technology composition
Two views of the same 207-record dataset: how filing volume has moved year over year, and which IPC subclasses carry the claim density.
Filing trend, 2017-2026
Filings rose from 4 in 2017 to a peak of 26 in 2021, then eased to 17 by 2024 — a 35% pullback over that three-year span. 2025 and 2026 figures are still incomplete because publication typically lags filing by around 18 months, so the most recent bars understate true activity.
Publication lags filing by roughly 18 months, so 2025 onwards are still filling in. Growth rates on this page therefore end at 2024; running them to the last bar would understate the field.
IPC subclass composition
H05K (printed circuits & assemblies) appears in 52.7% of the 207 records, ahead of H01L (semiconductor devices) at 28.0% and F28D (heat-exchange apparatus) at 27.1%. Because a single record can carry several IPC classes, these shares sum to well over 100% and should each be read against the same 207-record base, not against each other.
Shares are the percentage of the 207 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Electronics Thermal Management: Vapor Chamber Cooling Patent Landscape with Eureka
This page is one run against one query. Ask Eureka your own question about electronics thermal management: vapor chamber cooling patent landscape and every answer comes back with the patent numbers behind it.
Try EurekaThe prior art carrying the most influence
Enhanced Electronic Cooling by an Inner Fin Structure in a Vapor Chamber (US20110240263A1)
A vapor chamber cooling apparatus to cool an electronic component includes a sealed, hollow metal chamber; a working fluid disposed within the metal chamber; a wick structure disposed along an inner surface of the metal chamber; and an inner fin structure disposed within the metal chamber. An area of the metal chamber is in thermal contact with the electronic component, and the inner fin structure is in thermal contact with the metal chamber.Filed by Oracle International Corporation, dated 2011-10-06 — predates the 2015-2026 filing window in scope but anchors the inner-fin structural approach that later filings build on or design around.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US5131233A | Gas-liquid forced turbulence cooling | 213 |
| 2 | US5884486A | Thermoelectric humidity pump and method for dehumidfying of an electronic apparatus | 137 |
| 3 | US5706668A | Computer housing with cooling means | 117 |
| 4 | US5168919A | Air cooled heat exchanger for multi-chip assemblies | 116 |
| 5 | US3586101A | Cooling system for data processing equipment | 101 |
| 6 | US20070295480A1 | Multi-fluid cooling system, cooled electronics module, and methods of fabrication thereof | 89 |
| 7 | US4012770A | Cooling a heat-producing electrical or electronic component | 63 |
| 8 | US20150109730A1 | Direct coolant contact vapor condensing | 62 |
| 9 | US20130187492A1 | Wheel-hub motor cooling | 52 |
| 10 | US20180036740A1 | Ion plasma disintegrator | 49 |
Citation counts favour older filings that have had more time to accumulate references inside this searched corpus — treat them as a signal of influence on later filers, not as a measure of current commercial relevance.
Each row carries its publication number; clicking a row searches Eureka by that number.
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Browse MCP servers →What the numbers mean for filing strategy
Three findings that change how a freedom-to-operate search or a new filing should be scoped in this space.
The core is contested, the edges are not
The leader holds 16 records and fifth place holds 9, so the gap between the top of the ranking and the rest is real but not overwhelming. Top 10 combined account for 43.5% of all 207 records, meaning well over half the corpus sits with entities outside that group — a long tail of few-filing or single-filing organisations still active in the space.
A cooling-off from a 2021 peak, not a collapsing field
Filings climbed from 4 in 2017 to a peak of 26 in 2021, then fell 35% to 17 by 2024. That is the last year the trend can be treated as complete; 2025 and 2026 are still filling in given the roughly 18-month lag between filing and publication.
Printed-circuit integration dominates the claim language
H05K and H01L together cover the majority of records, showing that most vapor chamber claims are written from the packaging and semiconductor-device side rather than as standalone heat-exchanger mechanics. F25B (refrigeration & heat pumps) and F21V (lighting device components) sit under 10% of records each, marking thinner-claimed adjacent uses.
Filing is US-centred with a real European and PCT tail
The United States receives the largest share of filings at 102, followed by Europe (EPO) at 24 and WIPO/PCT at 16, with India at 11 and Germany at 9. A PCT or EPO-only filer entering this space should still expect the densest prior art to be in US-filed documents.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to electronics thermal management: vapor chamber cooling patent landscape, with the prior art for and against each one.
| Assignee | Co-assignee | Shared families |
|---|---|---|
| Intel Corporation | ZHOU HAO | 1 |
| Intel Corporation | ZHOU CONG | 1 |
| Intel Corporation | ZHANG MING | 1 |
| Intel Corporation | YING GUOLIANG | 1 |
| Intel Corporation | YANG JIN | 1 |
| Intel Corporation | WEI PENG | 1 |
| Intel Corporation | WANG XINFENG | 1 |
| Intel Corporation | SOVER RAANAN | 1 |
Only 10 co-assignee pairs appear in the dataset, and the strongest links are single-instance pairings — co-filing is not yet a defining feature of this field.
Where to take this analysis
The dataset points to specific next steps depending on whether the goal is defensive clearance or offensive filing.
Map claim scope on the thinnest classes
F25B and F21V each sit under 10% of the 207 records, which is a starting point for scoping a first claim in refrigeration-adjacent or lighting-adjacent vapor chamber uses before the space fills in.
Explore white space in EurekaTrack the post-2024 filing signal as it fills in
2025 and 2026 counts will keep rising as publication catches up; re-running this trend in six months will show whether the 2021 peak was cyclical or structural.
Set up a filing alert in EurekaBenchmark against the most-cited prior art
The five most-cited records anchor decades of citation activity; any new filing in inner-fin or wick-structure claims should be checked against them directly.
Run a citation search in EurekaCommon questions about vapor chamber cooling patents
The assignee ranking in this dataset covers 100 companies across 207 records, and the leader holds 16 of those records with fifth place holding 9. The top 5 combined account for 28.0% of all 207 records in scope, and the top 10 combined account for 43.5% — meaningful concentration at the top, but well over half the field still sits outside that group. This mix includes computing hardware majors, telecom equipment makers and industrial or lighting cooling specialists, so leadership varies by which sub-application you look at.
Filings rose from 4 in 2017 to a peak of 26 in 2021, then eased to 17 by 2024 — a 35% decline over that three-year window, which is the most recent period that can be treated as complete. 2025 and 2026 figures look lower still, but that is an artefact of the roughly 18-month lag between filing and publication rather than a real drop in activity. Judged on complete years only, the field grew sharply through the early 2020s and has since cooled from its peak rather than collapsed.
The bulk of filings sit in H05K (printed circuits & assemblies), covering 52.7% of the 207 records, followed by H01L (semiconductor devices) at 28.0% and F28D (heat-exchange apparatus) at 27.1%. Because a record can carry multiple IPC classes, these percentages overlap rather than sum to 100%. Thinner-claimed classes such as F25B (refrigeration & heat pumps) at 7.2% and F21V (lighting device components) at 6.3% suggest those adjacent applications are comparatively under-filed relative to core electronics packaging.
US20110240263A1, filed by Oracle International Corporation and dated 2011-10-06, claims a vapor chamber apparatus combining a sealed metal chamber, a working fluid, a wick structure along the inner chamber wall, and an inner fin structure in thermal contact with the chamber for cooling an electronic component. Anyone filing a vapor chamber design that combines all four elements — sealed chamber, working fluid, wick, and internal fin structure specifically for component cooling — needs to check this filing and its family status closely. Designs that omit the inner fin structure, or that move the fin function outside the sealed chamber, sit further from this particular claim set.
The clearest under-claimed branches by IPC share are F25B (refrigeration & heat pumps) at 7.2% and F21V (lighting device components) at 6.3% of the 207 records, both far behind the H05K and H01L core. This does not mean the underlying engineering is unsolved — it means fewer claims have been written specifically for those use cases, which is where a narrowly scoped first claim has room to stand on its own art. Co-assignee activity is also thin, with only 10 pairs in the dataset, suggesting collaborative filing has not yet become common and a solo filer is not unusual in this space.
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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.
Nothing on this page constitutes an exhaustive prior-art, novelty, freedom-to-operate, or validity search, nor does it constitute legal, financial, investment, or professional advice, and it should not be relied upon as such. Any patent, commercial, or strategic decision should be verified independently and reviewed with qualified patent, legal, and domain professionals. Patsnap makes no warranties, express or implied, as to the accuracy, completeness, or fitness for any particular purpose of the information presented.
Machine translation. Assignee and organisation names originally recorded in Chinese, Japanese or Korean have been rendered into English by an AI translation step so that the tables stay readable. These renderings are best-effort and may not match a company’s registered English name; the original name is what the underlying patent record carries, and it is what any Eureka query launched from this page uses.