Auxiliary Systems & Maintenance

Support systems for gas turbine engines, including specialized pumps, cleaning methods for engine components, mobile power generation units, and specific structural components like joints and fasteners.

7,112 US filings from 511 companies since 2023 · 2023: 2,043 · 2024: 2,062 · 2025: 2,097 · 2026 YTD: 910

Gas Turbine Plants

Top companies

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

#	Company	Since 2023	2023	2024	2025	2026 YTD	YoY
1	General Electric Company	1,677	396	459	564	258	+22.9%
2	RTX Corporation	820	76	247	330	167	+33.6%
3	Pratt & Whitney Canada Corp.	643	184	152	185	122	+21.7%
4	Rolls-Royce PLC	491	147	133	149	62	+12.0%
5	RAYTHEON TECHNOLOGIES CORPORATION	371	266	92	13	·	-85.9%
6	SAFRAN AIRCRAFT ENGINES	233	70	82	68	13	-17.1%
7	Rolls-Royce North American Technologies Inc.	210	53	73	73	11	0.0%
8	Rolls-Royce Corporation	166	52	46	56	12	+21.7%
9	MITSUBISHI HEAVY INDUSTRIES, LTD.	163	51	59	42	11	-28.8%
10	GE Infrastructure Technology LLC	145	1	58	69	17	+19.0%
11	GE Avio S.r.l.	145	28	37	50	30	+35.1%
12	HAMILTON SUNDSTRAND CORPORATION	135	47	34	47	7	+38.2%
13	Doosan Enerbility Co., Ltd.	103	36	33	20	14	-39.4%
14	Honeywell International Inc.	74	25	16	22	11	+37.5%
15	SIEMENS ENERGY GLOBAL GMBH & CO. KG	72	29	31	9	3	-71.0%
16	BJ Energy Solutions, LLC	58	34	14	4	6	-71.4%
17	Unison Industries, LLC	57	17	17	19	4	+11.8%
18	ROLLS-ROYCE DEUTSCHLAND LTD & CO KG	54	27	19	6	2	-68.4%
19	General Electric Company Polska Sp. z o.o.	53	17	12	18	6	+50.0%
20	General Electric Deutschland Holding GmbH	52	23	10	11	8	+10.0%
21	GARRETT TRANSPORTATION I INC.	51	22	13	9	7	-30.8%
22	MTU Aero Engines AG	46	19	11	12	4	+9.1%
23	Collins Engine Nozzles, Inc.	45	22	13	10	·	-23.1%
24	SAFRAN HELICOPTER ENGINES	44	10	14	16	4	+14.3%
25	Yantai Jereh Petroleum Equipment & Technologies Co., Ltd.	43	15	16	11	1	-31.2%