Patent Theme

Advanced Adsorbent & Separation Media

Development of materials with tailored porosity, surface chemistry, or structure, such as metal-organic frameworks (MOFs), zeolites, or superficially porous particles, for selective adsorption, ion exchange, or chromatographic separations.

4,429 US filings from 1,578 companies since 2023 · 2023: 1,065 · 2024: 1,435 · 2025: 1,342 · 2026 YTD: 587

Separation Processes (Filtration, Distillation)Catalysts & ReactorsAcyclic / Cyclic Compounds (Other Elements)

Top companies

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

#	Company	Since 2023	2023	2024	2025	2026 YTD	YoY
1	SAUDI ARABIAN OIL COMPANY	168	45	54	52	17	-3.7%
2	LG Chem, Ltd.	92	21	26	30	15	+15.4%
3	EXXONMOBIL TECHNOLOGY AND ENGINEERING COMPANY	85	16	36	23	10	-36.1%
4	NGK INSULATORS, LTD.	74	17	26	22	9	-15.4%
5	King Abdullah University of Science and Technology	68	19	28	16	5	-42.9%
6	KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS	65	16	15	30	4	+100.0%
7	CHEVRON U.S.A. INC.	64	24	14	9	17	-35.7%
8	Waters Technologies Corporation	64	11	27	18	8	-33.3%
9	CHINA PETROLEUM & CHEMICAL CORPORATION	51	16	11	15	9	+36.4%
10	BASF CORPORATION	46	15	17	9	5	-47.1%
11	The Regents of the University of California	43	12	13	11	7	-15.4%
12	BASF SE	38	13	10	12	3	+20.0%
13	GEORGIA TECH RESEARCH CORPORATION	33	10	8	13	2	+62.5%
14	W. L. Gore & Associates, Inc.	32	12	16	3	1	-81.2%
15	CALGON CARBON CORPORATION	29	4	13	8	4	-38.5%
16	TOYOTA JIDOSHA KABUSHIKI KAISHA	29	4	8	13	4	+62.5%
17	Johnson Matthey Public Limited Company	28	9	10	8	1	-20.0%
18	KING FAISAL UNIVERSITY	26	2	21	3	·	-85.7%
19	Lawrence Livermore National Security, LLC	25	8	10	5	2	-50.0%
20	UOP LLC	23	1	10	5	7	-50.0%
21	ENTEGRIS, INC.	22	8	7	7	·	0.0%
22	FUJIFILM CORPORATION	22	4	6	8	4	+33.3%
23	California Institute of Technology	21	7	6	5	3	-16.7%
24	DIC Corporation	21	6	9	4	2	-55.6%
25	Imam Abdulrahman Bin Faisal University	21	1	12	5	3	-58.3%