B23B 41/04
Boring or drilling machines or devices specially adapted for particular work: for
Official title: for boring polygonal or other non-circular holes
B23B41/04 (Boring or drilling machines or devices specially adapted for particular work: for) appears on 28 US grants and 22 published applications in this corpus.
Search patents in B23B- Granted patents
- 28
- Published applications
- 22
- Assignees
- 18
- Inventors
- 49
- Latest grant
- 15 Aug 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 2 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 1 |
| 2008 | 1 | 1 |
| 2009 | 1 | 0 |
| 2010 | 1 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 3 |
| 2013 | 1 | 1 |
| 2014 | 2 | 2 |
| 2015 | 1 | 1 |
| 2016 | 3 | 4 |
| 2017 | 0 | 3 |
| 2018 | 5 | 0 |
| 2019 | 1 | 1 |
| 2020 | 0 | 0 |
| 2021 | 2 | 2 |
| 2022 | 0 | 0 |
| 2023 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Hole drilling machine and method for drilling oval hole and inner-diameter-changing hole by means of hole drilling machine15 Aug 2023US 11,724,321 B2Enshu Co., Ltd.
- Hole drilling machine and method for drilling oval hole and inner-diameter-changing hole by means of hole drilling machine26 Oct 2021US 11,154,939 B2Enshu Co., Ltd.
- Machining method and machining device3 Aug 2021US 11,077,503 B2Toyota Jidosha Kabushi Kikaisha
- Machining apparatus5 Mar 2019US 10,220,479 B2Toyota Jidosha Kabushiki Kaisha
- Drilling milling tool and methods for producing a through-hole23 Oct 2018US 10,105,763 B2ZF Friedrichshafen AG
- Hole drilling machine and method for drilling oval hole and inner-diameter-changing hole by means of hole drilling machine30 Dec 2021US 2021/0402491 A1Enshu Co., Ltd.
- Hole drilling machine and method for drilling oval hole and inner-diameter-changing hole by means of hole drilling machine1 Jul 2021US 2021/0197294 A1Enshu Co., Ltd.
- Machining method and machining device27 Jun 2019US 2019/0193168 A1Toyota Jidosha Kabushiki Kaisha
- Machining apparatus26 Oct 2017US 2017/0304978 A1Toyota Jidosha Kabushiki Kaisha
- Drilling milling tool and methods for producing a through-hole24 Aug 2017US 2017/0239735 A1ZF Friedrichshafen AG
Most cited
By later US patents
- Method and tool for cutting inside corner23US 6,601,484 B1Toshiba Kikai Kabushiki Kaisha · 2003
- Precision drill for drilling noncircular bores8US 5,782,585 AMahle GmbH · 1998
- Method and apparatus for making a longitudinal hole in a pipe7US 5,876,161 AT-Drill Oy · 1999
- Device for drilling a square hole5US 5,538,370 A1996
- Plunge cutting device for non-circular shapes5US 6,565,294 B12003