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A63B 37/00621

Centre hardness

Official title: {Centre hardness}

A63B37/00621 (Centre hardness) appears on 765 US grants and 819 published applications in this corpus.

Search patents in A63B

Granted patents: 765
Published applications: 819
Assignees: 31
Inventors: 216
Latest grant: 21 Jul 2026

Filings by year

A63B 37/00621: granted patents and published applications per publication year
Year	Granted patents	Published applications
1987	1	0
1988	0	0
1989	0	0
1990	0	0
1991	1	0
1992	0	0
1993	0	0
1994	1	0
1995	3	0
1996	6	0
1997	3	0
1998	18	0
1999	6	0
2000	5	0
2001	10	7
2002	17	24
2003	24	35
2004	21	12
2005	11	8
2006	23	13
2007	14	15
2008	11	26
2009	12	49
2010	29	49
2011	42	62
2012	36	44
2013	26	39
2014	48	43
2015	53	70
2016	59	71
2017	64	57
2018	56	50
2019	61	30
2020	35	28
2021	25	21
2022	7	6
2023	15	10
2024	9	23
2025	8	23
2026	5	4

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

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