C21D 7/02
Modifying the physical properties of iron or steel by deformation: by cold
Official title: by cold working
C21D7/02 (Modifying the physical properties of iron or steel by deformation: by cold) appears on 1,003 US grants and 1,098 published applications in this corpus.
Search patents in C21D- Granted patents
- 1,003
- Published applications
- 1,098
- Assignees
- 624
- Inventors
- 2,800
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 5 | 0 |
| 1978 | 9 | 0 |
| 1979 | 6 | 0 |
| 1980 | 7 | 0 |
| 1981 | 5 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 9 | 0 |
| 1985 | 9 | 0 |
| 1986 | 9 | 0 |
| 1987 | 14 | 0 |
| 1988 | 8 | 0 |
| 1989 | 11 | 0 |
| 1990 | 5 | 0 |
| 1991 | 5 | 0 |
| 1992 | 4 | 0 |
| 1993 | 16 | 0 |
| 1994 | 12 | 0 |
| 1995 | 7 | 0 |
| 1996 | 19 | 0 |
| 1997 | 19 | 0 |
| 1998 | 22 | 0 |
| 1999 | 12 | 0 |
| 2000 | 18 | 0 |
| 2001 | 21 | 3 |
| 2002 | 20 | 29 |
| 2003 | 26 | 26 |
| 2004 | 16 | 28 |
| 2005 | 22 | 36 |
| 2006 | 16 | 30 |
| 2007 | 15 | 29 |
| 2008 | 13 | 44 |
| 2009 | 15 | 38 |
| 2010 | 29 | 53 |
| 2011 | 20 | 46 |
| 2012 | 28 | 41 |
| 2013 | 32 | 56 |
| 2014 | 22 | 45 |
| 2015 | 40 | 69 |
| 2016 | 42 | 54 |
| 2017 | 52 | 46 |
| 2018 | 39 | 55 |
| 2019 | 43 | 60 |
| 2020 | 46 | 53 |
| 2021 | 39 | 41 |
| 2022 | 27 | 45 |
| 2023 | 42 | 56 |
| 2024 | 45 | 53 |
| 2025 | 32 | 36 |
| 2026 | 18 | 26 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for modifying finished surfaces with the aim of improved surface properties8 Sep 2026US 12,729,414 B2ThyssenKrupp Steel Europe AG
- Method for production of a steel tubular product, in particular an airbag tubular product, and a steel tubular product produced using this method, in particular an airbag tubular product11 Aug 2026US 12,703,021 B2Benteler Steel/Tube GmbH
- Dehydrogenation method for steel material and steel product, and production method for steel material and steel product21 Jul 2026US 12,686,896 B2Jfe Steel Corporation
- Steel sheet and enameled product7 Jul 2026US 12,674,226 B2Nippon Steel Corporation
- Device and method for treating a metal part16 Jun 2026US 12,654,285 B2Safran Aircraft Engines
- Temperature control plate for connection with a battery housing, battery housing for a motor vehicle, and method for manufacturing a battery housing20 Aug 2026US 2026/0246007 A1Benteler Automobiltechnik GmbH
- Method for forming a face spline in a constant velocity joint6 Aug 2026US 2026/0225150 A1Hansae Mobility Co., Ltd.
- Steel sheet and method for producing same6 Aug 2026US 2026/0226573 A1Nippon Steel Corporation
- Austenitic stainless steel product6 Aug 2026US 2026/0226598 A1Nippon Steel Corporation
- Systems and methods for the local incremental deformation of local component regions6 Aug 2026US 2026/0227764 A1Ohio State Innovation Foundation
Most cited
By later US patents
- Apparatus and method for forming weld joints having compressive residual stress patterns135US 6,926,970 B2Lambda Research, Inc. · 2005
- Pipe expansion device113US 6,460,615 B1Shell Oil Company · 2002
- Apparatus for processing welded joint parts of pipes109US 4,491,001 AKawasaki Jukogyo Kabushiki Kaisha · 1985
- Guidewire having braided wire over drawn tube construction109US 6,142,975 AAdvanced Cardiovascular Systems, Inc. · 2000
- Laser peening system and method102US 4,937,421 AGeneral Electric Company · 1990