B23G 9/00
Working screws, bolt heads, or nuts in conjunction with thread cutting
Official title: Working screws, bolt heads, or nuts in conjunction with thread cutting, e.g. slotting screw heads or shanks, removing burrs from screw heads or shanks; Finishing, e.g. polishing, any screw-thread
B23G9/00 (Working screws, bolt heads, or nuts in conjunction with thread cutting) appears on 146 US grants and 115 published applications in this corpus.
Search patents in B23G- Granted patents
- 146
- Published applications
- 115
- Assignees
- 73
- Inventors
- 260
- Latest grant
- 10 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 7 | 0 |
| 1978 | 3 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 5 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 1 |
| 2002 | 4 | 1 |
| 2003 | 5 | 4 |
| 2004 | 0 | 2 |
| 2005 | 1 | 0 |
| 2006 | 0 | 1 |
| 2007 | 1 | 2 |
| 2008 | 2 | 3 |
| 2009 | 1 | 6 |
| 2010 | 0 | 1 |
| 2011 | 4 | 2 |
| 2012 | 1 | 8 |
| 2013 | 3 | 8 |
| 2014 | 7 | 7 |
| 2015 | 6 | 8 |
| 2016 | 7 | 3 |
| 2017 | 8 | 10 |
| 2018 | 4 | 10 |
| 2019 | 6 | 5 |
| 2020 | 12 | 6 |
| 2021 | 4 | 3 |
| 2022 | 3 | 7 |
| 2023 | 9 | 4 |
| 2024 | 1 | 8 |
| 2025 | 4 | 2 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Thread repair tool10 Feb 2026US 12,544,844 B2Rtx Corporation
- Machining device, machining method and cutting tool24 Jun 2025US 12,337,402 B2Citizen Machinery Co., Ltd.
- Thread cleaning device22 Apr 2025US 12,280,440 B2
- Bottoming tap and chaser and method of use4 Feb 2025US 12,214,435 B2
- Thread repair hand tool14 Jan 2025US 12,194,556 B2
- Method and repair kit for restoring a mounting assembly, repair kit, repaired mounting assembly, and aircraft engine17 Sep 2026US 2026/0273672 A1
- Deburring external chamfer tool with cutting insert mounting structure4 Jun 2026US 2026/0151834 A1Hong Ann Tool Industries Co., Ltd.
- Male thread repair tool21 May 2026US 2026/0138176 A1
- Enhanced devices, systems, and methods for manufacturing undercut threadforms on fasteners25 Sep 2025US 2025/0296167 A1RTG Scientific, LLC
- Female thread repairing tool23 Jan 2025US 2025/0025954 A1
Most cited
By later US patents
- Tool for repairing damaged threads in a blind hole19US 5,281,059 A1994
- Method and tool for repairing damaged threads16US 5,803,676 A1998
- Methods, systems, and formats for data, such as data used in laser projection of fasteners used in manufacturing14US 7,433,796 B2The Boeing Company · 2008
- Hole forming apparatus13US 6,179,718 B2L & M Machining and Manufacturing, Inc. · 2001
- Thread chasing tool and method13US 6,206,620 B12001