B21F 3/04
Externally on a mandrel or the like
Official title: externally on a mandrel or the like
B21F3/04 (Externally on a mandrel or the like) appears on 137 US grants and 86 published applications in this corpus.
Search patents in B21F- Granted patents
- 137
- Published applications
- 86
- Assignees
- 89
- Inventors
- 223
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 6 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 6 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 5 | 0 |
| 1984 | 3 | 0 |
| 1985 | 4 | 0 |
| 1986 | 5 | 0 |
| 1987 | 6 | 0 |
| 1988 | 1 | 0 |
| 1989 | 7 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 5 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 3 |
| 2003 | 4 | 3 |
| 2004 | 2 | 3 |
| 2005 | 0 | 1 |
| 2006 | 2 | 1 |
| 2007 | 0 | 1 |
| 2008 | 0 | 4 |
| 2009 | 3 | 3 |
| 2010 | 0 | 2 |
| 2011 | 0 | 0 |
| 2012 | 1 | 5 |
| 2013 | 2 | 5 |
| 2014 | 5 | 5 |
| 2015 | 4 | 6 |
| 2016 | 3 | 6 |
| 2017 | 4 | 6 |
| 2018 | 3 | 7 |
| 2019 | 4 | 1 |
| 2020 | 7 | 4 |
| 2021 | 3 | 8 |
| 2022 | 2 | 3 |
| 2023 | 5 | 1 |
| 2024 | 2 | 2 |
| 2025 | 1 | 4 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Tool moving device and wire forming machine22 Sep 2026US 12,741,310 B2Asahi-Seiki Manufacturing Co., Ltd.
- Coiling machine, method for manufacturing coil spring, and coil spring21 Jul 2026US 12,686,082 B2NHK Spring Co., Ltd.
- Coil forming device and coil of a rotating electric device25 Feb 2025US 12,237,733 B2Hitachi Automotive Systems, Ltd.
- Coiling machine, method for manufacturing coil spring, and coil spring23 Apr 2024US 11,964,321 B2NHK Spring Co., Ltd.
- Coil winding apparatus and coil winding method12 Mar 2024US 11,925,970 B2Nittoku Co., Ltd.
- Tool moving device and wire forming machine11 Jun 2026US 2026/0158540 A1Asahi-Seiki Manufacturing Co., Ltd.
- Metal coil and method of its manufacture26 Mar 2026US 2026/0084204 A1Inficon GmbH
- Method and machine to manufacture windings around respective supports30 Oct 2025US 2025/0332633 A1G. D S.p.A.
- Coiling machine and coil spring manufacturing method5 Jun 2025US 2025/0178068 A1NHK Spring Co., Ltd.
- Coiling machine and production method for coil springs5 Jun 2025US 2025/0178069 A1NHK Spring Co., Ltd.
Most cited
By later US patents
- Guidewire having braided wire over drawn tube construction109US 6,142,975 AAdvanced Cardiovascular Systems, Inc. · 2000
- Method of heating a nitinol stent92US 6,666,881 B1Medinol Ltd. · 2003
- Stent91US 6,514,285 B1Medinol Ltd. · 2003
- Stent41US 6,692,521 B2Medinol Ltd. · 2004
- Multiple-strand torsion spring25US 4,889,327 APerfection Spring & Stamping Corp. · 1989