C21D 7/04
Of the surface
Official title: of the surface
C21D7/04 (Of the surface) appears on 697 US grants and 749 published applications in this corpus.
Search patents in C21D- Granted patents
- 697
- Published applications
- 749
- Assignees
- 423
- Inventors
- 1,901
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 6 | 0 |
| 1985 | 7 | 0 |
| 1986 | 4 | 0 |
| 1987 | 8 | 0 |
| 1988 | 4 | 0 |
| 1989 | 6 | 0 |
| 1990 | 4 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 11 | 0 |
| 1994 | 10 | 0 |
| 1995 | 4 | 0 |
| 1996 | 14 | 0 |
| 1997 | 16 | 0 |
| 1998 | 18 | 0 |
| 1999 | 10 | 0 |
| 2000 | 15 | 0 |
| 2001 | 12 | 1 |
| 2002 | 16 | 25 |
| 2003 | 25 | 17 |
| 2004 | 10 | 17 |
| 2005 | 15 | 27 |
| 2006 | 13 | 20 |
| 2007 | 11 | 21 |
| 2008 | 10 | 30 |
| 2009 | 7 | 31 |
| 2010 | 24 | 34 |
| 2011 | 15 | 30 |
| 2012 | 19 | 32 |
| 2013 | 25 | 46 |
| 2014 | 16 | 30 |
| 2015 | 33 | 48 |
| 2016 | 28 | 39 |
| 2017 | 38 | 32 |
| 2018 | 26 | 39 |
| 2019 | 24 | 43 |
| 2020 | 36 | 44 |
| 2021 | 29 | 29 |
| 2022 | 23 | 24 |
| 2023 | 32 | 33 |
| 2024 | 34 | 25 |
| 2025 | 14 | 19 |
| 2026 | 6 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Device and method for treating a metal part16 Jun 2026US 12,654,285 B2Safran Aircraft Engines
- Austenitic stainless steel material, method for producing the same, and device for hydrogen16 Jun 2026US 12,655,509 B2Nippon Steel Stainless Steel Corporation
- Steel wire28 Apr 2026US 12,612,675 B2Nippon Steel Corporation
- Coated metal part obtained by deformation of a coated metal sheet21 Apr 2026US 12,606,898 B2ArcelorMittal
- Plated steel sheet having excellent corrosion resistance, galling resistance, workability and surface property and method for manufacturing same27 Jan 2026US 12,534,791 B2Posco Coated & Color Steel 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
- Grain-oriented electrical steel sheet and manufacturing method therefor9 Jul 2026US 2026/0193732 A1Nippon Steel Corporation
- Grain-oriented electrical steel sheet and manufacturing method therefor2 Jul 2026US 2026/0185196 A1Nippon Steel Corporation
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
- Apparatus for processing welded joint parts of pipes109US 4,491,001 AKawasaki Jukogyo Kabushiki Kaisha · 1985
- Laser peening system and method102US 4,937,421 AGeneral Electric Company · 1990
- Surgically implantable prosthetic devices88US 5,607,480 AImplant Innovations, Inc. · 1997
- Process for the production of two-way shape memory alloys82US 5,836,066 AInnovative Dynamics, Inc. · 1998