patentgrepDocs Get an API key

A63B 37/0063

Hardness gradient

Official title: {Hardness gradient}

A63B37/0063 (Hardness gradient) appears on 748 US grants and 932 published applications in this corpus.

Search patents in A63B

Granted patents: 748
Published applications: 932
Assignees: 31
Inventors: 195
Latest grant: 21 Jul 2026

Filings by year

A63B 37/0063: granted patents and published applications per publication year
Year	Granted patents	Published applications
1986	1	0
1987	1	0
1988	0	0
1989	1	0
1990	2	0
1991	3	0
1992	0	0
1993	1	0
1994	0	0
1995	0	0
1996	0	0
1997	0	0
1998	2	0
1999	1	0
2000	0	0
2001	1	1
2002	2	11
2003	8	5
2004	4	3
2005	2	6
2006	8	10
2007	9	14
2008	14	26
2009	19	45
2010	27	39
2011	31	43
2012	32	43
2013	22	74
2014	42	55
2015	66	72
2016	66	83
2017	76	86
2018	78	65
2019	70	40
2020	38	42
2021	34	31
2022	19	22
2023	24	28
2024	17	35
2025	17	37
2026	10	16

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

Recent patents

Most cited

By later US patents