Alloy Coatings & Surface Treatment

Methods and compositions for applying metallic or alloy layers to a substrate, or modifying the surface of an alloy, to impart specific functional properties such as corrosion resistance, wear resistance, electrical insulation, or improved adhesion, without altering the bulk properties significantly.

9,776 US filings from 2,312 companies since 2023 · 2023: 2,498 · 2024: 3,130 · 2025: 2,923 · 2026 YTD: 1,225

Alloys

Top companies

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

#	Company	Since 2023	2023	2024	2025	2026 YTD	YoY
1	NIPPON STEEL CORPORATION	776	174	248	255	99	+2.8%
2	JFE Steel Corporation	499	88	169	172	70	+1.8%
3	POSCO CO., LTD	468	78	170	144	76	-15.3%
4	ArcelorMittal	296	66	69	119	42	+72.5%
5	POSCO	142	72	18	31	21	+72.2%
6	EBARA CORPORATION	116	30	35	36	15	+2.9%
7	BAOSHAN IRON & STEEL CO., LTD.	97	17	24	36	20	+50.0%
8	Applied Materials, Inc.	95	30	30	27	8	-10.0%
9	Hyundai Steel Company	91	19	20	42	10	+110.0%
10	MITSUBISHI MATERIALS CORPORATION	77	25	27	19	6	-29.6%
11	PROTERIAL, LTD.	76	12	26	27	11	+3.8%
12	The Boeing Company	74	26	20	25	3	+25.0%
13	Sumitomo Electric Industries, Ltd.	71	19	28	18	6	-35.7%
14	General Electric Company	68	22	24	12	10	-50.0%
15	ThyssenKrupp Steel Europe AG	66	17	27	15	7	-44.4%
16	GM GLOBAL TECHNOLOGY OPERATIONS LLC	65	26	12	20	7	+66.7%
17	RTX Corporation	58	4	23	22	9	-4.3%
18	TOYOTA JIDOSHA KABUSHIKI KAISHA	56	16	29	7	4	-75.9%
19	UACJ CORPORATION	56	16	17	14	9	-17.6%
20	Oerlikon Surface Solutions AG, Pfäffikon	54	15	20	16	3	-20.0%
21	Lam Research Corporation	45	16	10	14	5	+40.0%
22	Novelis Inc.	43	20	11	10	2	-9.1%
23	ATOTECH DEUTSCHLAND GMBH & Co. KG	42	10	17	11	4	-35.3%
24	SUMITOMO ELECTRIC HARDMETAL CORP.	40	8	11	18	3	+63.6%
25	TOKYO ELECTRON LIMITED	40	16	10	12	2	+20.0%