Magnetic Field Detection

Use of magnetostatic or vector magnetometers and associated processing for detecting objects, mapping magnetic fields, or determining position and orientation in various applications.

4,376 US filings from 1,043 companies since 2023 · 2023: 1,378 · 2024: 1,260 · 2025: 1,289 · 2026 YTD: 449

Geophysics & Gravity Measurement

Top companies

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

#	Company	Since 2023	2023	2024	2025	2026 YTD	YoY
1	TDK CORPORATION	323	107	87	104	25	+19.5%
2	SIEMENS HEALTHINEERS AG	196	·	42	118	36	+181.0%
3	Siemens Healthcare GmbH	171	127	44	·	·	—
4	Allegro MicroSystems, LLC	153	44	34	50	25	+47.1%
5	KONINKLIJKE PHILIPS N.V.	146	53	46	38	9	-17.4%
6	GE PRECISION HEALTHCARE LLC	113	21	32	39	21	+21.9%
7	CANON MEDICAL SYSTEMS CORPORATION	110	26	33	33	18	0.0%
8	Infineon Technologies AG	101	27	33	34	7	+3.0%
9	Hyperfine Operations, Inc.	67	33	14	16	4	+14.3%
10	LG INNOTEK CO., LTD.	65	30	15	17	3	+13.3%
11	MELEXIS TECHNOLOGIES SA	54	23	14	13	4	-7.1%
12	SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.	50	14	18	13	5	-27.8%
13	Asahi Kasei Microdevices Corporation	40	7	13	14	6	+7.7%
14	Apple Inc.	36	15	12	9	·	-25.0%
15	KABUSHIKI KAISHA TOSHIBA	36	16	11	9	·	-18.2%
16	Alps Alpine Co., Ltd.	35	6	10	15	4	+50.0%
17	BIOSENSE WEBSTER (ISRAEL) LTD.	32	8	10	11	3	+10.0%
18	SAMSUNG ELECTRONICS CO., LTD.	31	10	8	7	6	-12.5%
19	Analog Devices International Unlimited Company	28	11	13	4	·	-69.2%
20	Honeywell International Inc.	28	5	6	12	5	+100.0%
21	The General Hospital Corporation	27	11	5	8	3	+60.0%
22	Kyoto University	26	6	7	9	4	+28.6%
23	The Regents of the University of California	26	7	7	7	5	0.0%
24	Mitsubishi Electric Corporation	25	8	8	6	3	-25.0%
25	SeeScan, Inc.	25	5	7	9	4	+28.6%