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Electrolyzer Cell Components

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.

7,770 US filings from 1,469 companies since 2023 · 2023: 2,123 · 2024: 2,215 · 2025: 2,350 · 2026 YTD: 1,082

Electrolysis & Electrochemistry

Top companies

Ranked by filings in this theme since 2023. 2026 is partial.

#CompanySince 20232023202420252026 YTDYoY
1Hyundai Motor Company51517511314681+29.2%
2Kia Corporation46212910514682+39.0%
3Robert Bosch GmbH327868710549+20.7%
4TOYOTA JIDOSHA KABUSHIKI KAISHA29692797352-7.6%
5HONDA MOTOR CO., LTD.26288608430+40.0%
6LG Energy Solution, Ltd.24657717048-1.4%
7Bloom Energy Corporation19752575236-8.8%
8GM GLOBAL TECHNOLOGY OPERATIONS LLC12914316024+93.5%
9KOLON INDUSTRIES, INC.11624472916-38.3%
10AUDI AG11150192913+52.6%
11Panasonic Intellectual Property Management Co., Ltd.10433322613-18.8%
12Ningde Amperex Technology Limited8720183316+83.3%
13Reinz-Dichtungs-GmbH851827319+14.8%
1424M Technologies, Inc.8412333360.0%
15KABUSHIKI KAISHA TOSHIBA8412302418-20.0%
16Contemporary Amperex Technology Co., Limited828252029-20.0%
17KYOCERA CORPORATION742716238+43.8%
18SIEMENS ENERGY GLOBAL GMBH & CO. KG671118308+66.7%
19ASAHI KASEI KABUSHIKI KAISHA652623124-47.8%
20HYDROGENICS CORPORATION612911174+54.5%
21SK IE Technology Co., Ltd.599211811-14.3%
22SK INNOVATION CO., LTD.58922198-13.6%
23Kia Motors Corporation544491·-88.9%
24TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORPORATION541023147-39.1%
25LG Chem, Ltd.461612108-16.7%