B21F 3/02
Helically
Official title: helically
B21F3/02 (Helically) appears on 347 US grants and 275 published applications in this corpus.
Search patents in B21F- Granted patents
- 347
- Published applications
- 275
- Assignees
- 203
- Inventors
- 572
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 9 | 0 |
| 1978 | 2 | 0 |
| 1979 | 4 | 0 |
| 1980 | 8 | 0 |
| 1981 | 5 | 0 |
| 1982 | 3 | 0 |
| 1983 | 9 | 0 |
| 1984 | 4 | 0 |
| 1985 | 8 | 0 |
| 1986 | 8 | 0 |
| 1987 | 8 | 0 |
| 1988 | 3 | 0 |
| 1989 | 9 | 0 |
| 1990 | 6 | 0 |
| 1991 | 4 | 0 |
| 1992 | 5 | 0 |
| 1993 | 8 | 0 |
| 1994 | 7 | 0 |
| 1995 | 5 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 10 | 0 |
| 1999 | 9 | 0 |
| 2000 | 8 | 0 |
| 2001 | 2 | 4 |
| 2002 | 8 | 13 |
| 2003 | 11 | 9 |
| 2004 | 7 | 11 |
| 2005 | 6 | 8 |
| 2006 | 9 | 5 |
| 2007 | 2 | 2 |
| 2008 | 5 | 9 |
| 2009 | 4 | 7 |
| 2010 | 0 | 6 |
| 2011 | 3 | 20 |
| 2012 | 8 | 9 |
| 2013 | 7 | 13 |
| 2014 | 12 | 11 |
| 2015 | 11 | 13 |
| 2016 | 6 | 11 |
| 2017 | 14 | 22 |
| 2018 | 5 | 12 |
| 2019 | 11 | 10 |
| 2020 | 15 | 12 |
| 2021 | 10 | 14 |
| 2022 | 7 | 8 |
| 2023 | 9 | 10 |
| 2024 | 5 | 14 |
| 2025 | 10 | 14 |
| 2026 | 6 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Tool moving device and wire forming machine22 Sep 2026US 12,741,310 B2Asahi-Seiki Manufacturing Co., Ltd.
- Method of manufacturing stator4 Aug 2026US 12,700,780 B2NHK Spring Co., Ltd.
- Method for producing a nonlinear cylindrical spring and use of such a spring28 Jul 2026US 12,693,689 B2Rolls-Royce Deutschland Ltd & Co KG
- Coiling machine, method for manufacturing coil spring, and coil spring21 Jul 2026US 12,686,082 B2NHK Spring Co., Ltd.
- Concrete reinforcement21 Jul 2026US 12,687,019 B2Stanley Wire Limited
- Method for manufacturing an optimal torsion spring, method for assembling a spring-assisted roller blind mechanism and corresponding spring-assisted roller13 Aug 2026US 2026/0234992 A17912854 Canada Inc.
- Tool moving device and wire forming machine11 Jun 2026US 2026/0158540 A1Asahi-Seiki Manufacturing Co., Ltd.
- Stator manufacturing apparatus14 May 2026US 2026/0135452 A1Hyundai Motor Company
- Metal guide tube9 Apr 2026US 2026/0097229 A1Rakuten Medical, Inc.
- Hairpin coil forming apparatus9 Apr 2026US 2026/0100626 A1Hyundai Mobis 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
- Holder for inserting corneal curvature adjustable ring79US 4,961,744 AKeraVision, Inc. · 1990
- Method for corneal curvature adjustment69US 5,188,125 AKeraVision, Inc. · 1993