B23B 3/30
Turning-machines with two or more working-spindles
Official title: Turning-machines with two or more working-spindles, e.g. in fixed arrangement
B23B3/30 (Turning-machines with two or more working-spindles) appears on 135 US grants and 118 published applications in this corpus.
Search patents in B23B- Granted patents
- 135
- Published applications
- 118
- Assignees
- 71
- Inventors
- 239
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 8 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 2 | 1 |
| 2004 | 2 | 1 |
| 2005 | 1 | 3 |
| 2006 | 2 | 2 |
| 2007 | 2 | 2 |
| 2008 | 2 | 0 |
| 2009 | 1 | 1 |
| 2010 | 0 | 5 |
| 2011 | 0 | 1 |
| 2012 | 1 | 1 |
| 2013 | 3 | 9 |
| 2014 | 4 | 5 |
| 2015 | 9 | 5 |
| 2016 | 5 | 4 |
| 2017 | 4 | 2 |
| 2018 | 3 | 5 |
| 2019 | 4 | 12 |
| 2020 | 5 | 14 |
| 2021 | 9 | 12 |
| 2022 | 10 | 11 |
| 2023 | 7 | 13 |
| 2024 | 10 | 5 |
| 2025 | 6 | 2 |
| 2026 | 6 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Machine tool18 Aug 2026US 12,708,974 B2Etxe-Tar, S.A.
- Constant rake fluted drill bit and method of manufacture21 Apr 2026US 12,605,795 B1
- Combined processing machine24 Mar 2026US 12,583,035 B2Fuji Corporation
- Machine tool, in particular lathe with auxiliary spindle3 Mar 2026US 12,564,886 B2Dmg Mori Co., Ltd.
- Machine tool and control device for managing a usage time of a tool3 Mar 2026US 12,564,912 B2Fuji Corporation
- Machine tool8 Oct 2026US 2026/0307196 A1Etxe-Tar, S.A.
- Chuck soft jaw, chuck soft jaw making method, workpiece machining method, and hybrid machine tool11 Jun 2026US 2026/0158562 A1Yamazaki Mazak Corporation
- Machine tool, and machine tool alignment method27 Nov 2025US 2025/0360588 A1Citizen Watch Co., Ltd.
- Structurally-colored articles and methods of making and using structurally-colored articles2 Oct 2025US 2025/0306245 A1NIKE, Inc.
- Method and device for clearing debris from a machining spindle7 Nov 2024US 2024/0367236 A1
Most cited
By later US patents
- Numerically-controlled lathe, numerically-controlled device therefor and processing procedure thereby53US 5,127,140 AHitachi Seiki Co., Ltd. · 1992
- Flexible machining system51US 4,719,676 AWadell Equipment Company, Inc. · 1988
- Structurally-colored articles and methods for making and using structurally-colored articles45US 10,649,113 B2NIKE, Inc. · 2020
- Structurally-colored articles and methods for making and using structurally-colored articles45US 10,928,553 B2NIKE, Inc. · 2021
- Multiple-spindle lathe29US 5,704,262 APCC Pittler Maschinenfabrik GmbH · 1998