B23G 1/20
Machines with a plurality of working spindles
B23G1/20 (Machines with a plurality of working spindles) appears on 11 US grants and 7 published applications in this corpus.
Search patents in B23G- Granted patents
- 11
- Published applications
- 7
- Assignees
- 6
- Inventors
- 7
- Latest grant
- 15 Feb 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 5 |
| 2007 | 3 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Horizontal multi-spindle machining center15 Feb 2022US 11,247,303 B2Sungrim Engineering Co., Ltd
- Tap process for hard workpieces1 Jan 2008US 7,313,853 B2Kennametal Inc.
- Tap process for hard workpieces11 Dec 2007US 7,305,747 B2Kennametal Inc.
- Tap process for hard workpieces13 Nov 2007US 7,293,338 B2Kennametal Inc.
- Tap process for hard workpieces16 Oct 2007US 7,281,307 B2Kennametal Inc.
- Horizontal multi-spindle machining center4 Mar 2021US 2021/0060666 A1Sungrim Engineering Co., Ltd
- Tap process for hard workpieces11 May 2006US 2006/0099038 A1Kennametal Inc.
- Tap process for hard workpieces4 May 2006US 2006/0093447 A1Kennametal Inc.
- Tap process for hard workpieces9 Mar 2006US 2006/0051168 A1Kennametal Inc.
- Tap process for hard workpieces9 Mar 2006US 2006/0051169 A1Kennametal Inc.
Most cited
By later US patents
- Thread cutting machine21US 4,692,071 ABrother Kogyo Kabushiki Kaisha · 1987
- Thread cutting machine9US 4,813,821 ABrother Kogyo Kabushiki Kaisha · 1989
- Fast-action multiple tapping machine6US 4,706,369 AAteliers de Decoupage, Emboutissage et Mecanique de la Vallee de l'Arve ADEMVA, Societe Anonyme · 1987
- Multispindle thread cutter apparatus4US 5,603,590 A1997
- Horizontal multi-spindle machining center1US 11,247,303 B2Sungrim Engineering Co., Ltd · 2022