C21D 2221/00
Treating localised areas of an article
C21D2221/00 (Treating localised areas of an article) appears on 699 US grants and 805 published applications in this corpus.
Search patents in C21D- Granted patents
- 699
- Published applications
- 805
- Assignees
- 433
- Inventors
- 2,032
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 4 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 5 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 8 | 0 |
| 1994 | 3 | 0 |
| 1995 | 7 | 0 |
| 1996 | 14 | 0 |
| 1997 | 6 | 0 |
| 1998 | 12 | 0 |
| 1999 | 13 | 0 |
| 2000 | 18 | 0 |
| 2001 | 21 | 5 |
| 2002 | 35 | 24 |
| 2003 | 23 | 20 |
| 2004 | 17 | 30 |
| 2005 | 14 | 14 |
| 2006 | 14 | 16 |
| 2007 | 11 | 13 |
| 2008 | 7 | 17 |
| 2009 | 15 | 24 |
| 2010 | 9 | 29 |
| 2011 | 13 | 39 |
| 2012 | 23 | 43 |
| 2013 | 17 | 24 |
| 2014 | 24 | 37 |
| 2015 | 21 | 55 |
| 2016 | 19 | 36 |
| 2017 | 31 | 50 |
| 2018 | 33 | 41 |
| 2019 | 39 | 49 |
| 2020 | 35 | 49 |
| 2021 | 43 | 38 |
| 2022 | 29 | 54 |
| 2023 | 33 | 22 |
| 2024 | 35 | 31 |
| 2025 | 21 | 23 |
| 2026 | 13 | 22 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Spatially selective electromagnetic field assisted processing of bulk crystalline soft magnetic alloys18 Aug 2026US 12,709,780 B2University of Pittsburgh—Of the Commonwealth System of Higher Education
- 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
- Thermal treatment of component30 Jun 2026US 12,668,851 B2Schwartz GmbH
- Connection performance uniformity improving method for assembly joint surface based on partition hardening26 May 2026US 12,637,733 B2Xi' An Jiaotong University
- Method for manufacturing grain-oriented electrical steel sheet26 May 2026US 12,640,292 B2Jfe Steel Corporation
- Hot stamping component and manufacturing method therefor27 Aug 2026US 2026/0249342 A1Hyundai Steel Company
- Laser patterning assisted processing enabling magnetic domain engineering of soft magnetic alloys6 Aug 2026US 2026/0226578 A1University of Pittsburgh—Of the Commonwealth System of Higher Education
- Continuous annealing line, continuous annealing method, method of producing cold-rolled steel sheet, and method of producing coated or plated steel sheet30 Jul 2026US 2026/0218361 A1Jfe Steel Corporation
- Hot roll forming system for high strength component production23 Jul 2026US 2026/0208247 A1GM Global Technology Operations LLC
- Side trimming method23 Jul 2026US 2026/0208249 A1
Most cited
By later US patents
- Magnetically coded device145US 5,631,093 AGeneral Motors Corporation · 1997
- Method for thermomagnetic encoding of permanent magnet materials79US 5,492,572 AGeneral Motors Corporation · 1996
- Self-drilling/self-tapping fastener66US 5,755,542 AElco Textron Inc. · 1998
- Ground-engaging tool for an excavation bucket60US 6,457,269 B1Caterpillar SARL · 2002
- Color marks on catheter guide wire57US 4,951,686 AB. Braun-SSC AG · 1990