B23B 41/12
Boring or drilling machines or devices specially adapted for particular work: for
Official title: for forming working surfaces of cylinders, of bearings, e.g. in heads of driving rods, or of other engine parts
B23B41/12 (Boring or drilling machines or devices specially adapted for particular work: for) appears on 130 US grants and 98 published applications in this corpus.
Search patents in B23B- Granted patents
- 130
- Published applications
- 98
- Assignees
- 91
- Inventors
- 282
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 5 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 3 | 1 |
| 2003 | 3 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 3 |
| 2006 | 2 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 2 |
| 2009 | 2 | 3 |
| 2010 | 0 | 6 |
| 2011 | 0 | 3 |
| 2012 | 4 | 6 |
| 2013 | 2 | 4 |
| 2014 | 5 | 7 |
| 2015 | 5 | 7 |
| 2016 | 5 | 7 |
| 2017 | 8 | 11 |
| 2018 | 14 | 10 |
| 2019 | 10 | 2 |
| 2020 | 5 | 9 |
| 2021 | 5 | 5 |
| 2022 | 2 | 3 |
| 2023 | 3 | 2 |
| 2024 | 0 | 1 |
| 2025 | 3 | 4 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Tool insert in a cylinder boring machine for machining a cylinder bore1 Sep 2026US 12,722,210 B2Van Norman Machine India PVT LTD
- Tool head24 Jun 2025US 12,337,393 B2Bayerische Motoren Werke Aktiengesellschaft
- Apparatus, systems, and methods for engine dowel installation24 Jun 2025US 12,337,397 B2BNSF Railway Company
- Control apparatus of machining device and control method of the same18 Feb 2025US 12,228,911 B2Mazda Motor Corporation
- Apparatus, systems, and methods for engine dowel installation12 Sep 2023US 11,752,561 B2BNSF Railway Company
- Apparatus, systems, & methods for engine dowel installation16 Oct 2025US 2025/0319530 A1BNSF Railway Company
- Tool insert in a cylinder boring machine for machining a cylinder bore31 Jul 2025US 2025/0242418 A1Van Norman Machine India PVT LTD
- Cutting machine10 Jul 2025US 2025/0222529 A1Honda Motor Co., Ltd.
- Cutting machine3 Jul 2025US 2025/0214152 A1Honda Motor Co., Ltd.
- Mobile resurfacing machine11 Apr 2024US 2024/0116116 A1
Most cited
By later US patents
- Portable line boring machine24US 4,932,814 A1990
- Line boring apparatus21US 4,693,642 AGeneral Motors Corporation · 1987
- Camshaft bore machining method and apparatus20US 5,221,165 ALitton Industrial Automation Systems, Inc. · 1993
- Length adjustable tool for aligning boring bar18US 6,860,029 B22005
- Tool for use in line boring of diesel engine blocks17US 4,451,186 A1984