H01R 4/28

Clamped connections, spring connections

Official title: Clamped connections, spring connections (made by means of terminals specially adapted for contact with, or insertion into, printed circuits H01R12/00)

H01R4/28 (Clamped connections, spring connections) appears on 5,322 US grants and 4,766 published applications in this corpus.

Search patents in H01R

Granted patents: 5,322
Published applications: 4,766
Assignees: 1,845
Inventors: 8,646
Latest grant: 6 Oct 2026

Filings by year

H01R 4/28: granted patents and published applications per publication year
Year	Granted patents	Published applications
1976	42	0
1977	37	0
1978	46	0
1979	42	0
1980	33	0
1981	20	0
1982	33	0
1983	25	0
1984	36	0
1985	34	0
1986	42	0
1987	28	0
1988	29	0
1989	45	0
1990	45	0
1991	45	0
1992	51	0
1993	39	0
1994	50	0
1995	35	0
1996	58	0
1997	66	0
1998	86	0
1999	97	0
2000	98	0
2001	103	25
2002	77	56
2003	58	76
2004	92	98
2005	89	98
2006	112	114
2007	98	112
2008	100	136
2009	114	115
2010	125	150
2011	148	145
2012	110	144
2013	124	196
2014	159	236
2015	194	226
2016	259	255
2017	261	229
2018	251	281
2019	278	274
2020	273	255
2021	224	239
2022	192	275
2023	206	242
2024	169	300
2025	208	253
2026	136	236

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

Clamped connections, spring connections

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