B23C 3/28
Grooving workpieces
Official title: Grooving workpieces (tread-cutting by milling B23G1/32)
B23C3/28 (Grooving workpieces) appears on 597 US grants and 572 published applications in this corpus.
Search patents in B23C- Granted patents
- 597
- Published applications
- 572
- Assignees
- 334
- Inventors
- 975
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 5 | 0 |
| 1978 | 6 | 0 |
| 1979 | 7 | 0 |
| 1980 | 2 | 0 |
| 1981 | 8 | 0 |
| 1982 | 5 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 8 | 0 |
| 1986 | 4 | 0 |
| 1987 | 8 | 0 |
| 1988 | 6 | 0 |
| 1989 | 4 | 0 |
| 1990 | 6 | 0 |
| 1991 | 1 | 0 |
| 1992 | 9 | 0 |
| 1993 | 6 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 5 | 0 |
| 1997 | 12 | 0 |
| 1998 | 6 | 0 |
| 1999 | 11 | 0 |
| 2000 | 8 | 0 |
| 2001 | 4 | 4 |
| 2002 | 5 | 10 |
| 2003 | 10 | 5 |
| 2004 | 6 | 12 |
| 2005 | 7 | 15 |
| 2006 | 10 | 15 |
| 2007 | 12 | 22 |
| 2008 | 8 | 9 |
| 2009 | 11 | 18 |
| 2010 | 7 | 27 |
| 2011 | 11 | 28 |
| 2012 | 15 | 14 |
| 2013 | 24 | 36 |
| 2014 | 25 | 32 |
| 2015 | 34 | 34 |
| 2016 | 28 | 37 |
| 2017 | 39 | 34 |
| 2018 | 41 | 43 |
| 2019 | 35 | 26 |
| 2020 | 30 | 41 |
| 2021 | 14 | 31 |
| 2022 | 23 | 24 |
| 2023 | 24 | 23 |
| 2024 | 12 | 15 |
| 2025 | 9 | 12 |
| 2026 | 13 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Clamp for key cutting machine29 Sep 2026US 12,746,608 B2Silca S.P.A.
- Tool and method for roll grooving a workpiece25 Aug 2026US 12,715,054 B2Milwaukee Electric Tool Corporation
- Apparatus for determining the roll, pitch and yaw of a key blank25 Aug 2026US 12,715,055 B2Iconx International Limited
- Injection molding tool and a method of forming an injection molding tool14 Jul 2026US 12,678,867 B2Ford Global Technologies, LLC
- Dental milling machine, adapter for use in a dental milling machine, and method for setting up a dental milling machine7 Jul 2026US 12,673,375 B2vhf camfacture Aktiengesellschaft
- Medical instrument and method for producing a medical instrument10 Sep 2026US 2026/0264153 A1
- Machine tool for removing worn-out liners from reciprocating compressor cylinders and related method of removal23 Jul 2026US 2026/0210353 A1Nuova Simat S.R.L.
- Arrangement and method for forming grooves in a board element9 Jul 2026US 2026/0192482 A1Ceraloc Innovation AB
- Manufacturing method of gear12 Feb 2026US 2026/0042140 A1Aisin Corporation
- Scroll vacuum pump and method for producing a scroll vacuum pump15 Jan 2026US 2026/0016009 A1Pfeiffer Vacuum Technology AG
Most cited
By later US patents
- Floorboards with decorative grooves127US 7,137,229 B2Välinge Innovation AB · 2006
- Method and apparatus for using light to identify a key94US 6,064,747 AAxxess Technologies, Inc. · 2000
- Method and apparatus for automatically making keys88US 5,807,042 A1998
- Key measurement apparatus and method88US 6,406,227 B1Machine Magic, LLC · 2002
- Method and apparatus for automatically making keys87US 6,065,911 A2000