B23Q 9/0021
The tool being guided in a circular path
Official title: {the tool being guided in a circular path}
B23Q9/0021 (The tool being guided in a circular path) appears on 98 US grants and 36 published applications in this corpus.
Search patents in B23Q- Granted patents
- 98
- Published applications
- 36
- Assignees
- 44
- Inventors
- 127
- Latest grant
- 16 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 4 | 0 |
| 1987 | 5 | 0 |
| 1988 | 4 | 0 |
| 1989 | 7 | 0 |
| 1990 | 3 | 0 |
| 1991 | 12 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 2 | 2 |
| 2004 | 3 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 1 |
| 2014 | 0 | 5 |
| 2015 | 0 | 4 |
| 2016 | 4 | 3 |
| 2017 | 3 | 3 |
| 2018 | 4 | 3 |
| 2019 | 5 | 4 |
| 2020 | 5 | 1 |
| 2021 | 2 | 2 |
| 2022 | 2 | 2 |
| 2023 | 0 | 1 |
| 2024 | 1 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Pipe machining system for positioning pipe machining apparatus in three-dimensional coordinate system16 Dec 2025US 12,496,672 B2Illinois Tool Works Inc.
- Portable lathes, portable lathe assembly kits, and associated methods16 Apr 2024US 11,958,119 B2Climax Portable Machine Tools, Inc.
- Systems, apparatuses and methods of machining pipes and/or pipe flanges18 Oct 2022US 11,471,960 B2Illinois Tool Works Inc.
- Resurfacing discharge ring of hydraulic turbine with runner in place6 Sep 2022US 11,433,491 B1ANDRITZ HYDRO GmbH
- Pipe machining system for positioning pipe machining apparatus in three-dimensional coordinate system24 Aug 2021US 11,097,394 B2Illinois Tool Works Inc.
- Machining apparatus and method for machining the outer circumference of a rotor by using such an apparatus15 Aug 2024US 2024/0269789 A1Siemens Energy Global GmbH & Co. KG
- Split frame device for performing operations on cylindrical items3 Aug 2023US 2023/0241689 A1Team Industrial Services, Inc.
- Multi-functional router base and methods of use15 Dec 2022US 2022/0395949 A1Woodpeckers, LLC
- Milling tool head assemblies, remote control systems, and portable machine tools including the same27 Jan 2022US 2022/0023953 A1Climax Portable Machine Tools, Inc.
- Pipe machining system for positioning pipe machining apparatus in three-dimensional coordinate system18 Nov 2021US 2021/0354259 A1Illinois Tool Works Inc.
Most cited
By later US patents
- Split frame portable machining lathe81US 4,739,685 A1988
- Segmented sliding bearing arrangement for portable lathe77US 4,829,860 ATri Tool Inc. · 1989
- Clamshell pipe lathe having improved bearing arrangement74US 5,549,024 A1996
- Pipe end preparation machine60US 4,411,178 APower Cutting Incorporated · 1983
- Multi-purpose router baseplate58US 5,452,751 A1995