Patent Theme

CO2 Electroreduction Catalysts

Development of catalytic materials and membrane electrode assemblies (MEAs) specifically designed for the electrochemical reduction of carbon dioxide (CO2) or carbon monoxide (COx) into valuable chemicals or fuels.

4,130 US filings from 1,263 companies since 2023 · 2023: 983 · 2024: 1,297 · 2025: 1,306 · 2026 YTD: 544

Electrolysis & Electrochemistry

Top companies

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

#	Company	Since 2023	2023	2024	2025	2026 YTD	YoY
1	KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS	165	28	44	68	25	+54.5%
2	BASF CORPORATION	105	46	42	14	3	-66.7%
3	Johnson Matthey Public Limited Company	93	33	31	23	6	-25.8%
4	CATALER CORPORATION	74	20	20	26	8	+30.0%
5	SAUDI ARABIAN OIL COMPANY	67	15	21	24	7	+14.3%
6	The Regents of the University of California	66	17	22	23	4	+4.5%
7	KABUSHIKI KAISHA TOSHIBA	64	10	26	15	13	-42.3%
8	TOYOTA JIDOSHA KABUSHIKI KAISHA	64	19	17	19	9	+11.8%
9	UMICORE AG & CO. KG	46	10	11	20	5	+81.8%
10	HONDA MOTOR CO., LTD.	45	10	17	16	2	-5.9%
11	Twelve Benefit Corporation	42	8	19	12	3	-36.8%
12	Hyundai Motor Company	38	12	13	9	4	-30.8%
13	Korea Institute of Science and Technology	36	13	8	11	4	+37.5%
14	UOP LLC	36	7	13	10	6	-23.1%
15	City University of Hong Kong	35	2	9	18	6	+100.0%
16	Kia Corporation	35	10	12	9	4	-25.0%
17	BASF MOBILE EMISSIONS CATALYSTS LLC	34	·	6	22	6	+266.7%
18	Research & Business Foundation Sungkyunkwan University	34	9	9	12	4	+33.3%
19	BASF SE	33	10	8	9	6	+12.5%
20	Dioxycle	30	2	15	8	5	-46.7%
21	SEKISUI CHEMICAL CO., LTD.	29	8	8	12	1	+50.0%
22	TotalEnergies OneTech	29	·	12	11	6	-8.3%
23	MITSUI MINING & SMELTING CO., LTD.	28	7	14	7	·	-50.0%
24	CHINA PETROLEUM & CHEMICAL CORPORATION	26	3	5	13	5	+160.0%
25	KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY	25	8	7	7	3	0.0%