B23B 2251/048
Radial clearance angles
B23B2251/048 (Radial clearance angles) appears on 10 US grants and 13 published applications in this corpus.
Search patents in B23B- Granted patents
- 10
- Published applications
- 13
- Assignees
- 13
- Inventors
- 30
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 4 |
| 2004 | 1 | 0 |
| 2005 | 2 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 3 |
| 2022 | 0 | 2 |
| 2023 | 0 | 2 |
| 2024 | 0 | 2 |
| 2025 | 0 | 0 |
| 2026 | 3 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Micro-reinforced concentric twist drill1 Sep 2026US 12,722,213 B2Shandong Old Roughneck Machinery Technology Co. Ltd
- Drilling tool for holemaking in metallic workpieces10 Jul 2007US 7,241,085 B2Sandvik Intellectual Property AB
- Rotary cutting tool16 Aug 2005US 6,929,434 B2Kennametal Inc.
- Micro-reinforced concentric twist drill22 Aug 2024US 2024/0278336 A1Shandong Old Roughneck Machinery Technology Co. Ltd
- Drill and method of producing drilled product1 Aug 2024US 2024/0253132 A1Subaru Corporation
- Machining tool comprising a settable guide rail5 Oct 2023US 2023/0311218 A1Guehring KG
- Drill and method for manufacturing machined product8 Jun 2023US 2023/0173594 A1KYOCERA Corporation
- Drill bit15 Dec 2022US 2022/0395914 A1Technische Universität Darmstadt
Most cited
By later US patents
- Twist drill for drilling printed circuit board laminates and having an drill point geometry37US 4,759,667 AAmerican Telephone and Telegraph Company, AT&T Technologies, Inc. · 1988
- Rotary cutting tool32US 6,929,434 B2Kennametal Inc. · 2005
- Drill with specialized drill point geometry28US 6,676,342 B2Allied Machine & Engineering Corp. · 2004
- Drill24US 6,916,139 B2Mitsubishi Materials Corporation · 2005
- Drilling tool for holemaking in metallic workpieces13US 7,241,085 B2Sandvik Intellectual Property AB · 2007