H04S 1/002

Non-adaptive circuits

Official title: {Non-adaptive circuits, e.g. manually adjustable or static, for enhancing the sound image or the spatial distribution (control circuits for electronic adaptation of the sound field H04S7/30)}

H04S1/002 (Non-adaptive circuits) appears on 1,150 US grants and 1,066 published applications in this corpus.

Search patents in H04S

Granted patents: 1,150
Published applications: 1,066
Assignees: 439
Inventors: 1,632
Latest grant: 4 Aug 2026

Filings by year

H04S 1/002: granted patents and published applications per publication year
Year	Granted patents	Published applications
1976	2	0
1977	1	0
1978	7	0
1979	7	0
1980	9	0
1981	2	0
1982	7	0
1983	4	0
1984	4	0
1985	5	0
1986	5	0
1987	3	0
1988	5	0
1989	12	0
1990	6	0
1991	6	0
1992	6	0
1993	6	0
1994	6	0
1995	19	0
1996	13	0
1997	13	0
1998	23	0
1999	22	0
2000	16	0
2001	10	7
2002	15	30
2003	19	29
2004	19	30
2005	12	32
2006	24	40
2007	20	33
2008	23	42
2009	18	44
2010	27	27
2011	35	31
2012	46	38
2013	29	23
2014	26	40
2015	34	41
2016	53	55
2017	54	59
2018	68	57
2019	71	79
2020	81	72
2021	44	54
2022	54	70
2023	53	39
2024	50	45
2025	43	34
2026	13	15

By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.

Subgroups

Granted patents

H04S 1/005For headphones453

Recent patents

Most cited

By later US patents