B23B 2231/0256
Flats
B23B2231/0256 (Flats) appears on 41 US grants and 37 published applications in this corpus.
Search patents in B23B- Granted patents
- 41
- Published applications
- 37
- Assignees
- 30
- Inventors
- 69
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 3 |
| 2005 | 0 | 0 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 3 |
| 2010 | 1 | 2 |
| 2011 | 5 | 0 |
| 2012 | 0 | 2 |
| 2013 | 0 | 2 |
| 2014 | 2 | 4 |
| 2015 | 0 | 4 |
| 2016 | 4 | 2 |
| 2017 | 3 | 1 |
| 2018 | 2 | 1 |
| 2019 | 1 | 3 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 4 |
| 2024 | 1 | 1 |
| 2025 | 0 | 2 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Clamping shank for a tool and tool comprising the clamping shank16 Jun 2026US 12,654,233 B2
- Tool head in head replaceable cutting tool2 Jun 2026US 12,643,155 B2Tungaloy Corporation
- Tool holder and tool holding structure including the same31 Mar 2026US 12,589,439 B2Nikken Kosakusho Works Ltd.
- Positioning cutter assembly and positioning collet assembly9 Apr 2024US 11,951,551 B2Shin-Yain Industrial Co., Ltd.
- Flexible finger connection16 Aug 2022US 11,413,733 B2ECA Medical Instruments
- Shank member for exchangeable-head cutting tool, and cutting tool6 Aug 2026US 2026/0225163 A1Tungaloy Corporation
- Tool holder and tool holding device29 May 2025US 2025/0170656 A1Nt Tool Corporation
- Toolholder and toolholder system comprising the same1 May 2025US 2025/0135555 A1C. & E. Fein GmbH
- Tool holder and tool holding structure including the same10 Oct 2024US 2024/0335889 A1Nikken Kosakusho Works Ltd.
- Clamping shank for a tool and tool comprising the clamping shank5 Oct 2023US 2023/0311216 A1
Most cited
By later US patents
- Surgical reamer213US 5,190,548 ALinvatec Corporation · 1993
- Drill bit for non-linear drilling53US 6,431,801 B1Maxtech Manufacturing Inc. · 2002
- Holder for tools and similar objects35US 3,945,653 ARobert Bosch GmbH · 1976
- Tool with changeable working tip34US 5,597,275 A1997
- Irregular-shank tools and drivers therefor31US 7,766,585 B2Team Fair Holdings Limited · 2010