B23B 2251/52
Depth indicators
B23B2251/52 (Depth indicators) appears on 13 US grants and 20 published applications in this corpus.
Search patents in B23B- Granted patents
- 13
- Published applications
- 20
- Assignees
- 11
- Inventors
- 28
- Latest grant
- 7 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 3 |
| 2015 | 1 | 0 |
| 2016 | 0 | 2 |
| 2017 | 3 | 2 |
| 2018 | 1 | 0 |
| 2019 | 1 | 3 |
| 2020 | 2 | 1 |
| 2021 | 0 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 1 | 0 |
| 2025 | 1 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Step drill bit7 Oct 2025US 12,434,308 B2Milwaukee Electric Tool Corporation
- K-wire depth measurement17 Sep 2024US 12,089,885 B2Premia Spine Ltd.
- Hole drilling device for forming expanded-diameter hole portion18 Aug 2020US 10,744,677 B2Kabushiki Kaisha Miyanaga
- Step drill bit30 Jun 2020US 10,695,845 B2Milwaukee Electric Tool Corporation
- Step drill bit9 Apr 2019US 10,252,351 B2Milwaukee Electric Tool Corporation
- Step drill bit18 Dec 2025US 2025/0381604 A1Milwaukee Electric Tool Corporation
- Reverse countersink cutting assemblies, reverse countersinking assemblies and methods for reverse countersinking a through hole in a workpiece3 Apr 2025US 2025/0108444 A1The Boeing Company
- K-wire depth measurement3 Jun 2021US 2021/0161571 A1Premia Spine Ltd.
- Step drill bit16 Jul 2020US 2020/0222994 A1Milwaukee Electric Tool Corporation
- Metal drill20 Jun 2019US 2019/0184473 A1Hilti Aktiengesellschaft
Most cited
By later US patents
- Device for measuring drill bit displacement48US 8,970,207 B2DePuy Synthes Products, Inc. · 2015
- Ceramic instrument44US 7,717,710 B2Gebr. Brasseler GmbH & Co. KG · 2010
- Boring bit and method for manufacture thereof41US 4,527,449 ARule Industries, Inc. · 1985
- Method of treating surgical drill, surgical drill and use of surgical drill22US 5,785,522 AAstra Aktiebolag · 1998
- Step drill bit22US 9,731,358 B2Milwaukee Electric Tool Corporation · 2017