B23B 51/102
Back spot-facing or chamfering
Official title: {Back spot-facing or chamfering}
B23B51/102 (Back spot-facing or chamfering) appears on 87 US grants and 60 published applications in this corpus.
Search patents in B23B- Granted patents
- 87
- Published applications
- 60
- Assignees
- 57
- Inventors
- 141
- Latest grant
- 6 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 6 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 3 |
| 2005 | 0 | 0 |
| 2006 | 1 | 2 |
| 2007 | 2 | 3 |
| 2008 | 2 | 0 |
| 2009 | 1 | 1 |
| 2010 | 2 | 5 |
| 2011 | 1 | 2 |
| 2012 | 1 | 1 |
| 2013 | 2 | 2 |
| 2014 | 2 | 0 |
| 2015 | 3 | 2 |
| 2016 | 2 | 5 |
| 2017 | 3 | 4 |
| 2018 | 4 | 4 |
| 2019 | 4 | 2 |
| 2020 | 1 | 4 |
| 2021 | 3 | 0 |
| 2022 | 0 | 7 |
| 2023 | 3 | 5 |
| 2024 | 0 | 6 |
| 2025 | 4 | 0 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method and tool for creating a through-thread6 Jan 2026US 12,515,268 B2EMUGE-Werk Richard Glimpel GmbH & Co. KG Fabrik fur Prazisionswerkzeuge
- Blind fastener23 Sep 2025US 12,420,341 B2Howmet Aerospace Inc.
- Blind fastener26 Aug 2025US 12,397,357 B2Howmet Aerospace Inc.
- Pressure-medium-controlled countersinking tool with blade centering22 Jul 2025US 12,365,038 B2Heule Werkzeug AG
- Metal member, processing system, and method for manufacturing metal member21 Jan 2025US 12,202,089 B2Sumitomo Electric Sintered Alloy, Ltd.
- Cutting tool and indexable insert4 Jun 2026US 2026/0151836 A1Kennametal Inc.
- Chamfering tool30 Apr 2026US 2026/0115812 A1Sumitomo Electric Hardmetal Corp.
- Backside countersinking inserted cutter28 Nov 2024US 2024/0390995 A1The Boeing Company
- Deburring tool with deburring blade for deburring the edges of holes5 Sep 2024US 2024/0293876 A1Heule Werkzeug AG
- Cutting tool with additional shaft-side secondary cutting tools11 Apr 2024US 2024/0116118 A1Heule Werkzeug AG
Most cited
By later US patents
- Counterbore for the bilateral attachment of plane surfaces to bolt holes48US 4,756,649 A1988
- Deburring drill bit37US 4,842,451 A1989
- Boring and deburring head and boring and deburring tool capable of being fastened therein, and method for boring and deburring a workpiece34US 4,589,805 AKadia-Diamant Maschinen- und Werkzeugfabrik O. Kopp GmbH & Co. · 1986
- Deburring tool with cutting blade30US 5,181,810 A1993
- Back spotfacing tool25US 5,507,606 AR. Steiner Technologies, Inc. · 1996