Where does FuelCell Energy, Inc. rank among US patent assignees?

According to USPTO PatentsView (2015–2025 granted utility patents), FuelCell Energy, Inc. ranks #3,373 of 49,997 assignees by granted-patent volume, the same sort as the companies listing and top-holders ranking. See /methodology/#corpus-placement.

How many patents does FuelCell Energy, Inc. hold?

FuelCell Energy, Inc. holds 110 US utility patents granted between 2015 and 2025, spanning 39 technology areas.

What is FuelCell Energy, Inc.'s Innovation Score?

FuelCell Energy, Inc. has an Innovation Score of 55.5 out of 100 (top 7% of the corpus). This composite metric weighs portfolio volume (40%), grant velocity (20%), technology breadth (25%), and claim depth (15%).

Is FuelCell Energy, Inc.'s patent grant rate increasing or decreasing?

FuelCell Energy, Inc.'s recent grant velocity is +221% compared to the prior five-year period (grant years, not application filing dates). This indicates accelerating grant output.

What does claim depth mean for FuelCell Energy, Inc.'s patents?

FuelCell Energy, Inc.'s patents average 16.9 claims each. This is an aggregate descriptive count from the grant record; it does not establish claim scope, legal strength, enforceability, or design-around risk.

How is the FuelCell Energy, Inc. patent data sourced?

All patent data comes from USPTO PatentsView, a public research dataset maintained by the United States Patent and Trademark Office covering US granted utility patents from 2015 to 2025.

USPTO 2015–2025 USPTO PatentsView US Corporation

FuelCell Energy, Inc.

Q: What technology areas does FuelCell Energy, Inc. focus on?

FuelCell Energy, Inc.'s top technology area is Y02E (Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution) with 109 patents. Grants appear in 39 CPC subclasses total.

USPTO PatentsView assignee record - 110 granted patents across 39 technology areas, recorded in grant years 2015–2025. Grant-trend analysis is cross-referenced to USPTO Patent Public Search; it does not measure application filings, current R&D, or legal strength. Primary class: Y02E (Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution).

Compiled by PlainPatent · May 15, 2026

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The verdict

According to USPTO PatentsView, Fuelcell ranks #3,373 of 49,997 tracked US assignees by granted-patent volume, with 110 patents across 39 technology areas.

#3,373
of 49,997 US assignees by volume: Top 7%
by Innovation Score (55.5/100): 16.9
avg claims per patent: +221%
grant velocity, last 5 yrs

USPTO PatentsView assignee plate

Corpus R3373 · US Corporation #3,373 · 110 grants

GRANTS-MID · TOP-DECILE · PHOTO-FINISH · CPC-FOCUS · INNOV-PAR · CLAIMS-RICH · TYPE-USCORP · VEL-SURGE · BOOK-FULL

GRANTS-MID 110 grants
TOP-DECILE #3,373/49,997
PHOTO-FINISH Educational Testing…
CPC-FOCUS Y02E · 39 areas
INNOV-PAR 55.5/100
CLAIMS-RICH 16.9 claims/avg
TYPE-USCORP US Corporation
VEL-SURGE +221% vel
BOOK-FULL 10/10 fields

Nearest grant-volume peer: Educational Testing Service (±0 grants)

Instrument codes from this assignee’s USPTO PatentsView grant sheet: volume band, corpus rank, photo-finish peer, lead CPC, Innovation Score, claim depth, assignee type, velocity, and book completeness. Not a USPTO rating of patent strength.

Qualcomm Incorporated · highest

85
EV Group E Thallner · near

55
Fairchild Semiconduc… · near

55
Faurecia Systemes… · near

55
FuelCell Energy · this assignee

55
Institut Polytechniq… · near

55
3D Lighting… · lowest

7

What this shows Fuelcell's Innovation Score is 55.5/100 (top 7% of the PatentsView-derived corpus). The chart places that score against the nearest Innovation Score peers plus corpus poles, not a reprint of the volume ranking.

Where Fuelcell's grants concentrate

FuelCell Energy, Inc. is a focused PatentsView assignee: 39 CPC subclasses with 99.1% of grants classified under Y02E (Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution). Peak complete grant year is 2020 (19 grants) versus a trough of 3 in 2016. By volume, Fuelcell sits between Educational Testing Service and Kinze Manufacturing, Inc..

Fuelcell's three-year grant acceleration

From 2019–2021 to 2022–2024, FuelCell Energy, Inc. moved from 41 to 43 grants (1.05x the prior three-year total, a multiple, not a CAGR). Among 3,296 tracked assignees with ≥100 grants and ≥20 prior-period grants, that multiple ranks #1,064. See the growth leaderboard.

Educational Testi…

110
Enza Zaden Beheer…

110
Experian Informat…

110
Flowserve Managem…

110
G D S P A

110
Harmonic

110
King's College Lo…

110
Kinze Manufacturi…

110
Fuelcell Energy ◀

110

What this shows FuelCell holds 110 patents at rank #3,373, shown against the 8 assignees closest to it in grant volume rather than the industry's largest filers.

Companies ranked near FuelCell

By rank, the assignees closest to #3,373 in granted patent volume.

Leaders in Y02E (Reduction OF Greenhouse GAS [GHG] Emissions)

Other assignees with the most granted patents in FuelCell's primary technology class.

Assignees with similar portfolio profiles

Two PlainPatent-derived peer sets for FuelCell, neither rank-band nor same-CPC leaders (those blocks stay above).

Similar innovation score

Nearest assignees by Innovation Score (55 here).

Faurecia Systemes D'echappement 55 EV Group E. Thallner GMBH 55 Institut Polytechnique DE Grenoble 55 Fairchild Semiconductor Corporation 55

Similar claim depth

Nearest assignees by average claims per patent (16.9 here).

Federal-mogul Ignition GMBH 16.9 avg Shutterfly, LLC 16.9 avg Yantai Jereh Petroleum Equipment & Technologies Co., Ltd. 16.9 avg Bedgear, LLC 16.9 avg

Fuelcell's Innovation Score vs. every tracked assignee

Composite of portfolio volume, grant velocity, technology breadth, and claim depth (0–100)

55 Top 7% higher than 93% of 49,997 US assignees

Each bar is a band; taller bars hold more US assignees. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count, share, and where it sits relative to this entry.

Source USPTO PatentsView, PlainPatent Innovation Score · 2015–2025

USPTO utility patent grants by year · 2015–2025

Grants by year

Teal-shaded recent years (2020–present) versus the 2015–2019 baseline. Full figures in the table below.

View data table

FuelCell Energy, Inc. patent grants by year, 2015–2025
Year	Patents Granted	Share of Period
2015	6	5.5%
2016	3	2.7%
2017	4	3.6%
2018	4	3.6%
2019	7	6.4%
2020	19	17.3%
2021	15	13.6%
2022	19	17.3%
2023	14	12.7%
2024	10	9.1%
2025partial year	9	8.2%

Which technologies does FuelCell Energy, Inc. patent most?

Y02E - Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution 109

H01M - Processes OR Means, e.g. Batteries, FOR THE Direct Conversion OF Chemical Energy Into Electrical Energy 104

Y02P - Climate Change Mitigation Technologies IN THE Production OR Processing OF Goods 36

C01B - Non-metallic ELEMENTS; Compounds THEREOF; ; Metalloids OR Compounds Thereof NOT Covered BY Subclass C01c 19

B01D - Separation 17

C25B - Electrolytic OR Electrophoretic Processes FOR THE Production OF Compounds OR NON-METALS; Apparatus Therefor 11

Y02C - Capture, Storage, Sequestration OR Disposal OF Greenhouse Gases [GHG] 9

Y02B - Climate Change Mitigation Technologies Related TO Buildings, e.g. Housing, House Appliances OR Related End-user Applications 8

B01J - Chemical OR Physical Processes, e.g. Catalysis OR Colloid CHEMISTRY; Their Relevant Apparatus 8

H02J - Circuit Arrangements OR Systems FOR Supplying OR Distributing Electric POWER; Systems FOR Storing Electric Energy 5

C04B - Lime, MAGNESIA; SLAG; CEMENTS; Compositions Thereof, e.g. Mortars, Concrete OR Like Building MATERIALS; Artificial Stone ; Ceramics ; REFRACTORIES; Treatment OF Natural Stone 5

F28D - Heat-exchange Apparatus, NOT Provided FOR IN Another Subclass, IN Which THE Heat-exchange Media DO NOT Come Into Direct Contact 4

Y10T - Technical Subjects Covered BY Former US Classification 4

F02C - Gas-turbine PLANTS; AIR Intakes FOR Jet-propulsion PLANTS; Controlling Fuel Supply IN Air-breathing Jet-propulsion Plants 3

Y02T - Climate Change Mitigation Technologies Related TO Transportation 3

Top 15 of 39 technology areas

Where it ranks

Overall rank by patents

#3,373

of 49,997 tracked assignees

Innovation Score

55.5 out of 100

View all rankings →

Data Source

USPTO PatentsView, US granted patents 2015–2025

How is Innovation Score calculated?

What to do with this data

FuelCell Energy, Inc.'s patent record in context - here's where to go next.

FuelCell Energy, Inc.'s lead technology class is Y02E (Reduction OF Greenhouse GAS [GHG] Emissions, Related TO Energy Generation, Transmission OR Distribution), 99.1% of its portfolio - see every assignee active in that class. Explore Y02E
Ranked #3,373 of 49,997 tracked assignees by patent volume - see the full leaderboard. See the ranking
Compare FuelCell Energy, Inc. against Educational Testing Service, an assignee filing at a similar volume. Compare portfolios
Innovation Score of 55.5/100 blends volume, velocity, technology breadth, and claim depth. How it's calculated

Figures reflect USPTO PatentsView grant data through May 2026; pending applications not yet granted are not counted.

Data sourced from USPTO PatentsView - official U.S. government patent data. See our methodology for computation details. Retrieved and formatted by PlainPatent

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the USPTO PatentsView database. Consult a qualified professional before making decisions based on this data.

Read our methodology - how this data is sourced, computed, and verified.

Data sources used on this page

USPTO PatentsView - the disambiguated bulk patent-grant, assignee, and CPC data this page's figures are derived from. patentsview.org
Cooperative Patent Classification (CPC) - the joint USPTO/EPO classification scheme used to group patents by technology area. cooperativepatentclassification.org
USPTO Patent Public Search - the official interface to verify the status of any individual patent. ppubs.uspto.gov

Compiled by PlainPatent, US Patent Intelligence Editorial Process · May 15, 2026

Every figure on PlainPatent is rendered directly from USPTO source data, no number is typed in by an editor. This page draws directly on USPTO source data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of May 2026.