B23B 51/044
With core holding devices
Official title: {with core holding devices}
B23B51/044 (With core holding devices) appears on 80 US grants and 62 published applications in this corpus.
Search patents in B23B- Granted patents
- 80
- Published applications
- 62
- Assignees
- 33
- Inventors
- 118
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 0 |
| 2003 | 3 | 2 |
| 2004 | 0 | 2 |
| 2005 | 1 | 0 |
| 2006 | 0 | 2 |
| 2007 | 0 | 2 |
| 2008 | 2 | 1 |
| 2009 | 2 | 1 |
| 2010 | 0 | 0 |
| 2011 | 1 | 1 |
| 2012 | 0 | 1 |
| 2013 | 0 | 2 |
| 2014 | 3 | 11 |
| 2015 | 4 | 3 |
| 2016 | 1 | 0 |
| 2017 | 3 | 5 |
| 2018 | 4 | 5 |
| 2019 | 4 | 3 |
| 2020 | 4 | 6 |
| 2021 | 7 | 3 |
| 2022 | 1 | 3 |
| 2023 | 2 | 1 |
| 2024 | 2 | 4 |
| 2025 | 3 | 2 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method of using a pipe coupon retainer15 Sep 2026US 12,734,593 B2Mueller International, LLC
- Pipe coupon retainer18 Aug 2026US 12,708,948 B2Mueller International, LLC
- Hole saw with open end cap geometry21 Jul 2026US 12,686,065 B2Milwaukee Electric Tool Corporation
- Hole saw arbor assembly21 Oct 2025US 12,447,538 B2Milwaukee Electric Tool Corporation
- Hole saw1 Jul 2025US 12,343,807 B2Milwaukee Electric Tool Corporation
- Method for removing a portion of a structure23 Apr 2026US 2026/0108958 A1Core Retention Equipment LLC
- Hole saw arbor assembly29 Jan 2026US 2026/0027629 A1Milwaukee Electric Tool Corporation
- Hole saw2 Oct 2025US 2025/0303481 A1Milwaukee Electric Tool Corporation
- Holesaw assembly19 Jun 2025US 2025/0196233 A1Black & Decker Inc.
- Plug cutting tool and related method of use28 Nov 2024US 2024/0390993 A1National Nail Corp.
Most cited
By later US patents
- Plug cutter60US 4,595,321 A1986
- Drilling tool60US 5,171,111 AKansai Kogu Manufacturing Co., Ltd. · 1992
- Drilling tool assembly and its center drill and cup shape drill57US 5,813,802 AHouse B. M. Co., Ltd. · 1998
- Plug cutter with radial relief56US 5,810,524 AWoodworker's Supply, Inc. · 1998
- Hole saw with modified pilot and plug biasing47US 5,934,845 A1999