Optical Polarization Management

Methods and devices for controlling, detecting, and compensating for the polarization state of light signals in optical communication systems, crucial for reducing crosstalk and managing signal integrity.

8,640 US filings from 1,512 companies since 2023 · 2023: 2,187 · 2024: 2,707 · 2025: 2,580 · 2026 YTD: 1,166

Multiplex Communication

Top companies

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

#	Company	Since 2023	2023	2024	2025	2026 YTD	YoY
1	Nippon Telegraph and Telephone Corporation	480	154	178	133	15	-25.3%
2	Huawei Technologies Co., Ltd.	463	137	118	140	68	+18.6%
3	NEC CORPORATION	341	60	137	101	43	-26.3%
4	Ciena Corporation	165	40	49	45	31	-8.2%
5	Cisco Technology, Inc.	160	36	56	44	24	-21.4%
6	Fujitsu Limited	148	48	42	42	16	0.0%
7	Nokia Solutions and Networks Oy	140	29	50	39	22	-22.0%
8	SAMSUNG ELECTRONICS CO., LTD.	118	36	24	35	23	+45.8%
9	FUJIFILM CORPORATION	101	23	37	25	16	-32.4%
10	3M Innovative Properties Company	94	25	23	35	11	+52.2%
11	II-VI DELAWARE, INC.	93	19	31	30	13	-3.2%
12	COMMSCOPE TECHNOLOGIES LLC	86	22	22	31	11	+40.9%
13	Telefonaktiebolaget LM Ericsson (publ)	83	19	31	21	12	-32.3%
14	Taiwan Semiconductor Manufacturing Company, Ltd.	83	10	31	29	13	-6.5%
15	ZTE Corporation	82	23	24	21	14	-12.5%
16	SUMITOMO OSAKA CEMENT CO., LTD.	77	14	26	29	8	+11.5%
17	ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE	76	16	23	21	16	-8.7%
18	FUJITSU OPTICAL COMPONENTS LIMITED	76	25	29	19	3	-34.5%
19	Meta Platforms Technologies, LLC	75	31	31	12	1	-61.3%
20	Mitsubishi Electric Corporation	75	19	24	16	16	-33.3%
21	QUALCOMM Incorporated	70	16	19	21	14	+10.5%
22	CORNING RESEARCH & DEVELOPMENT CORPORATION	67	18	25	16	8	-36.0%
23	NTT, Inc.	67	·	·	18	49	—
24	Apple Inc.	64	17	19	23	5	+21.1%
25	Sumitomo Electric Industries, Ltd.	63	18	20	18	7	-10.0%