B21D 22/16
Over shaping mandrels or formers
Official title: over shaping mandrels or formers
B21D22/16 (Over shaping mandrels or formers) appears on 238 US grants and 220 published applications in this corpus.
Search patents in B21D- Granted patents
- 238
- Published applications
- 220
- Assignees
- 157
- Inventors
- 507
- Latest grant
- 3 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 8 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 5 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 6 | 0 |
| 1999 | 8 | 0 |
| 2000 | 3 | 0 |
| 2001 | 6 | 4 |
| 2002 | 4 | 7 |
| 2003 | 10 | 6 |
| 2004 | 7 | 8 |
| 2005 | 2 | 5 |
| 2006 | 7 | 5 |
| 2007 | 3 | 5 |
| 2008 | 3 | 8 |
| 2009 | 4 | 10 |
| 2010 | 3 | 6 |
| 2011 | 5 | 7 |
| 2012 | 10 | 15 |
| 2013 | 5 | 6 |
| 2014 | 7 | 11 |
| 2015 | 4 | 16 |
| 2016 | 8 | 14 |
| 2017 | 7 | 8 |
| 2018 | 11 | 8 |
| 2019 | 8 | 10 |
| 2020 | 7 | 15 |
| 2021 | 12 | 10 |
| 2022 | 15 | 14 |
| 2023 | 9 | 6 |
| 2024 | 5 | 6 |
| 2025 | 9 | 7 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Weight-optimized rotor shaft, and process for manufacturing same3 Feb 2026US 12,540,641 B2ThyssenKrupp Steel Europe AG
- Method of making a fluid conduit30 Dec 2025US 12,508,638 B2Subsea 7 Limited
- Staged shearing and forming methods for t-bar cylindrical members11 Nov 2025US 12,466,138 B2Northwestern Polytechnical University
- Automatic control system for backward flow forming process14 Oct 2025US 12,440,884 B2Il Kwang Tech Co. Ltd.
- Splitting spinning apparatus2 Sep 2025US 12,403,519 B2Ningbo University
- Method for Manufacturing a One-Piece Vehicle Wheel28 May 2026US 2026/0145223 A1KRONPRINZ Solingen GmbH
- Near-isothermal hot spin forming method and heat complementing method for metal workpiece5 Mar 2026US 2026/0061473 A1
- Integrated spinning machine and use method8 Jan 2026US 2026/0008089 A1Guizhou Aviation Technical Development Co. Ltd
- Sequential shaping method27 Nov 2025US 2025/0360550 A1Nissan Motor Co., Ltd.
- Flow forming of additive manufactured products30 Oct 2025US 2025/0332627 A1Addman Intermediate Holdings, LLC
Most cited
By later US patents
- Method of spin forming and part made thereof77US 6,694,791 B1Hayes-Albion Corporation · 2004
- Method of manufacturing a forged magnesium alloy55US 5,409,555 AMazda Motor Corporation · 1995
- Numerically controlled forming method50US 6,532,786 B1D-J Engineering, Inc. · 2003
- Method and apparatus for forming sheet metal49US 7,536,892 B2Amino Corporation · 2009
- Circular and oval flanged rings for connecting ducting and method of making35US 5,983,496 AJ.A. Hermanson · 1999