H01F 27/324

Insulation between coil and core, between different winding sections, around the coil

Official title: {Insulation between coil and core, between different winding sections, around the coil; Other insulation structures}

H01F27/324 (Insulation between coil and core, between different winding sections, around the coil) appears on 1,307 US grants and 1,782 published applications in this corpus.

Search patents in H01F

Granted patents: 1,307
Published applications: 1,782
Assignees: 585
Inventors: 3,162
Latest grant: 6 Oct 2026

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H01F 27/324: granted patents and published applications per publication year
Year	Granted patents	Published applications
1976	5	0
1977	2	0
1978	4	0
1979	1	0
1980	2	0
1981	2	0
1982	2	0
1983	1	0
1984	2	0
1985	3	0
1986	1	0
1987	8	0
1988	0	0
1989	3	0
1990	3	0
1991	3	0
1992	3	0
1993	2	0
1994	3	0
1995	2	0
1996	4	0
1997	3	0
1998	5	0
1999	7	0
2000	9	0
2001	11	3
2002	8	24
2003	18	26
2004	20	38
2005	29	24
2006	32	27
2007	22	44
2008	24	41
2009	25	56
2010	43	44
2011	34	35
2012	26	52
2013	27	38
2014	32	49
2015	25	64
2016	38	74
2017	46	90
2018	61	102
2019	67	136
2020	68	114
2021	97	153
2022	108	146
2023	105	105
2024	116	131
2025	79	95
2026	66	71

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

Insulation between coil and core, between different winding sections, around the coil

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