PEMFC MEA/Stack Mass Production Patent Snapshot
The PEMFC MEA and stack mass production patent space is a compact, maturing field dominated by a small set of established players, with UTC Power Corp and Umicore AG & Co KG sharing the top position. Activity has eased back from its 2020 peak, reflecting a field past its fastest growth phase rather than one still expanding.
UTC Power and Umicore lead a highly concentrated field
UTC Power Corp and Umicore AG & Co KG jointly hold the top rank among filers, followed by Advent Technologies, Audi AG, and GM Global Technology Operations. The top five filers account for 42% of the combined total across the ranked applicants visible in this query, indicating a markedly concentrated visible assignee structure.
A clear tier gap separates the co-leaders from the mid-field: the third-ranked applicant, Advent Technologies, holds roughly half the count of the top two. Below that, the rankings thin out rapidly into single-digit counts, confirming that a handful of organizations drive the bulk of documented innovation activity.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | UTC Power Corporation | 24 | |
| 2 | UMICORE AG & CO KG | 24 | |
| 3 | Advent Technologies | 14 | |
| 4 | Audi AG | 9 | |
| 5 | GM Global Technology Operations LLC | 8 | |
| 6 | H Power Corp | 7 | |
| 7 | Samsung SDI Co Ltd | 5 | |
| 8 | Indian Institute of Technology Madras | 4 | |
| 9 | Hagans Patrick L | 4 | |
| 10 | Yi Jung S | 4 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 11 | Lawrence Livermore National Security LLC | 4 | |
| 12 | Richards William R | 4 | |
| 13 | Popovich Neil A | 4 | |
| 14 | Reiser Carl A | 4 | |
| 15 | Indian Oil Corporation Ltd | 3 | |
| 16 | General Motors LLC | 3 | |
| 17 | Hyundai Motor Co Ltd | 3 | |
| 18 | Asia Pacific Fuel Cell Technologies Ltd | 3 | |
| 19 | The Regents of the University of California | 3 | |
| 20 | Cheung Man Yiu | 2 |
The leaders’ positions imply that any new entrant seeking to operate in MEA or stack assembly processes faces a well-defended core, particularly in the H01M fuel-cell subclasses that are visible in the technology composition. Differentiation will likely require targeting the adjacent manufacturing branches where the established players are comparatively sparse.
Patent records from approximately the last 18 to 24 months are likely under-counted due to publication lag and should not be interpreted as a sustained decline in activity. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
A 2020 peak in filings and an H01M-dominant technology mix
The annual filing trend reveals a peak in 2020 followed by easing volume, while the technology composition chart shows that fuel-cell specific classes are visible in but several manufacturing-adjacent branches are meaningfully present.
Annual filing trend
Filings reached their highest point in 2020 and have eased since; the most recent one to two years are subject to publication lag and should be treated as provisional. The overall multi-year window still reflects a body of sustained, if moderate, activity.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H01M (batteries, cells and fuel cells) overwhelmingly is visible in the IPC mix, as expected for a fuel-cell assembly topic. Secondary branches including B05D (coating processes), C25B (electrolytic production), B01D (separation), B32B (layered products), and C08G/C08J (polymer classes) each represent a small but distinct slice, signaling that membrane and catalyst-layer manufacturing processes are documented alongside core cell architecture patents.
↗ 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.
PEM fuel cell stack assembly with isolated interna…
A PEM fuel cell assembly includes cooler plates (<b>10</b>) with internal coolant manifolds (<b>25</b>) isolated from the cell stack assembly by an isolation gap (<b>28</b>) to minimize the risk of contamination of the cells by antifreeze. The internal coolant manifolds are formed by seal assemblies (<b>24</b>), each disposed between inlet or outlet… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Fuel cells employing integrated fluid management p… | 206 |
| 2 | Fuel cell having uniform compressive stress distri… | 198 |
| 3 | Fuel cell platelet separators having coordinate fe… | 183 |
| 4 | Metal platelet fuel cells production and operation… | 180 |
| 5 | Membrane electrode assembly for PEM fuel cell | 177 |
| 6 | PEM-type fuel cell assembly having multiple parall… | 144 |
| 7 | Fuel cell with metal screen flow-field | 116 |
| 8 | Solid polymer mems-based fuel cells | 105 |
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.
UTC Power Corp
UTC Power Corp holds 24 patent records and concentrates its portfolio almost entirely on H01M 8 (fuel cell assemblies) with a secondary cluster in H01M 2 (cell components). This narrow, deep focus on core stack architecture makes UTC Power the most specialized of the top filers. No applicant momentum data are available for the recent period, so trajectory cannot be confirmed from evidence.
patent records: 24Umicore AG & Co KG
Umicore AG & Co KG matches UTC Power with 24 patent records but diversifies across H01M 8 (fuel cell assemblies), H01M 4 (electrode materials), and B01D 67 (membrane separation processes), reflecting its position as a catalyst and materials supplier rather than a system integrator. This broader IPC spread suggests that Umicore’s manufacturing IP spans both cell-level and upstream material-processing steps. Trajectory data for the recent period are not available from evidence.
patent records: 24Frequently asked questions
The corpus covers 20 patent families in scope. This is a comparatively compact body of prior art, which means individual high-citation patents carry significant weight and freedom-to-operate analysis should focus on the top-cited records identified in the evidence.
UTC Power Corp and Umicore AG & Co KG share the top rank, each with 24 patent records. Advent Technologies follows with 14, Audi AG with 9, and GM Global Technology Operations with 8. The top five account for 42% of the combined total across the ranked applicants visible in this query.
The field is classified as Decline, with annual filings having eased back from the 2020 peak. This indicates that broad foundational patents in MEA and stack architecture have largely been filed, and incremental process-refinement filings now characterize new activity.
The United States leads with 65 patent records, followed by WIPO PCT filings (27) and European EPO filings (26). India (12) and Australia (13) appear as secondary jurisdictions. China holds only 2 records, a notably low count given its manufacturing scale in PEM fuel cells.
H01M (batteries, cells and fuel cells) is the overwhelmingly visible IPC class. Secondary branches include B05D (coating processes), C25B (electrolytic production), B01D (separation), B32B (layered products), and polymer classes C08G and C08J, reflecting MEA material and process sub-topics alongside core cell architecture.
UTC Power Corp is the hub of the observed co-filing network. The most active co-filing pairs are YI JUNG S with UTC Power Corp (4 joint records) and RESNICK GENNADY with UTC Power Corp (4 joint records). One additional co-filing link connects UTC Power Corp with Schering AG (Germany). The broader collaboration network is narrow.
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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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