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B23B 51/009

Stepped drills

Official title: {Stepped drills}

B23B51/009 (Stepped drills) appears on 129 US grants and 154 published applications in this corpus.

Search patents in B23B

Granted patents: 129
Published applications: 154
Assignees: 88
Inventors: 270
Latest grant: 1 Sep 2026

Filings by year

B23B 51/009: granted patents and published applications per publication year
Year	Granted patents	Published applications
1978	1	0
1979	0	0
1980	1	0
1981	0	0
1982	0	0
1983	0	0
1984	0	0
1985	3	0
1986	2	0
1987	1	0
1988	0	0
1989	1	0
1990	1	0
1991	0	0
1992	1	0
1993	2	0
1994	1	0
1995	3	0
1996	0	0
1997	1	0
1998	2	0
1999	3	0
2000	3	0
2001	1	1
2002	1	4
2003	3	2
2004	1	4
2005	2	1
2006	1	6
2007	2	3
2008	3	5
2009	0	2
2010	1	3
2011	1	2
2012	2	7
2013	2	5
2014	4	7
2015	3	3
2016	6	7
2017	10	11
2018	7	3
2019	8	14
2020	7	9
2021	6	12
2022	12	9
2023	5	8
2024	5	11
2025	4	9
2026	6	6

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

Recent patents

Multi-step drill with asymmetric step profiles1 Sep 2026US 12,722,211 B2
Dental component with through hole28 Jul 2026US 12,690,953 B2Nobel Biocare Services AG
Drilling tool including a step drill bit30 Jun 2026US 12,667,894 B2Milwaukee Electric Tool Corporation
Step drill bit16 Jun 2026US 12,654,239 B2Milwaukee Electric Tool Corporation
Step drill bit2 Jun 2026US 12,643,160 B2Milwaukee Electric Tool Corporation

Most cited

By later US patents