Company patents
FuelCell Energy, Inc.
FuelCell Energy, Inc. demonstrates a highly concentrated patent strategy, with an overwhelming 90.8% of its portfolio in Batteries & Fuel Cells, which saw a slight decline of 5.3% in 2025 and a significant drop so far in 2026 (-77.8%). Surprisingly, despite this core focus, the company also shows an emerging interest in Electrolysis & Electrochemistry, which experienced a robust 33.3% year-over-year growth in 2024, indicating a potential diversification within its energy-related innovations.
Patent Trend by Technology Area
Yearly patent publications since 2023
Product themes
Product-level themes inferred from filings since 2023, with category chips showing where each theme appears. Select a theme to filter the patents below.
65 US filings (since 2023) · 5 categories · 13 themes
Design and engineering of non-catalytic parts within an electrolysis cell or stack, such as separators, gaskets, flow fields, porous transport layers, and manifold devices, to improve efficiency, sealing, or gas management.
Methods and systems for enhancing the operational lifespan, stability, and performance management of electrolyzers, including strategies for preventing degradation, restoring activity, and regulating operating conditions.
Catalytic processes and novel catalyst materials designed to efficiently produce hydrogen gas from various feedstocks, including hydrocarbons (e.g., methane, natural gas) and ammonia.
Utilization of electrochemical processes to synthesize a variety of chemical products, materials, or to treat waste streams, by selectively promoting redox reactions of specific feedstocks beyond hydrogen or CO2 reduction.
Technologies and materials for capturing carbon dioxide from gas streams and subsequently converting it into valuable chemical products or materials, rather than simply storing it.
Process and equipment for producing solid-state battery cells, including solid electrolyte synthesis (sulfide/oxide/polymer), thin-film deposition, lamination, sintering, dry-electrode fabrication, and stacking under controlled atmosphere.
Processes and apparatus for disassembling spent batteries and recovering valuable materials (e.g., metals, electrolytes, plastics) through mechanical, chemical, or electrochemical methods for reuse or sustainable disposal.
Development and synthesis of catalysts with unique compositions or structures, such as medium entropy alloys, metal foam-supported catalysts, layered catalytic articles, or high-entropy oxides, to enhance activity, selectivity, or stability in chemical reactions.
Systems designed to manage the temperature of multiple components in electric or hybrid vehicles, such as batteries, electric motors, power electronics, and the passenger cabin, often using shared or interconnected cooling/heating circuits.
Technologies and systems for removing unwanted components or separating desired gases from a mixed gas stream, including adsorption, absorption, and membrane-based methods.
Engineering solutions for safely and efficiently operating electrolysis devices at elevated pressures, including specialized sealing, pressure regulation, and system integration for high-pressure gas generation and handling.
Focuses on the structural integrity, housing, mounting, and physical integration of battery cells into robust and protected packs within electric vehicles, including manufacturing considerations.
Active anode materials and manufacturing techniques for rechargeable lithium-ion batteries, including silicon-carbon composites, graphite, lithium-metal anodes, and electrode coating processes that improve capacity, cycle life, and rate capability.
Patents
Showing 1-10 of 75
Electrolyzer Cell Components