C21D 1/26
Methods of annealing
C21D1/26 (Methods of annealing) appears on 1,209 US grants and 1,865 published applications in this corpus.
Search patents in C21D- Granted patents
- 1,209
- Published applications
- 1,865
- Assignees
- 582
- Inventors
- 3,769
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 4 | 0 |
| 1983 | 3 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 4 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 6 | 0 |
| 1990 | 6 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 6 | 0 |
| 1994 | 7 | 0 |
| 1995 | 5 | 0 |
| 1996 | 5 | 0 |
| 1997 | 4 | 0 |
| 1998 | 7 | 0 |
| 1999 | 12 | 0 |
| 2000 | 10 | 0 |
| 2001 | 9 | 1 |
| 2002 | 13 | 14 |
| 2003 | 17 | 9 |
| 2004 | 10 | 11 |
| 2005 | 5 | 10 |
| 2006 | 3 | 8 |
| 2007 | 6 | 11 |
| 2008 | 6 | 18 |
| 2009 | 3 | 26 |
| 2010 | 7 | 38 |
| 2011 | 12 | 42 |
| 2012 | 26 | 38 |
| 2013 | 19 | 42 |
| 2014 | 17 | 41 |
| 2015 | 30 | 100 |
| 2016 | 35 | 120 |
| 2017 | 57 | 74 |
| 2018 | 73 | 70 |
| 2019 | 81 | 75 |
| 2020 | 61 | 105 |
| 2021 | 70 | 109 |
| 2022 | 83 | 205 |
| 2023 | 87 | 201 |
| 2024 | 115 | 204 |
| 2025 | 174 | 159 |
| 2026 | 88 | 134 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Steel sheet for hot press formed member22 Sep 2026US 12,741,447 B2Posco
- Electron beam additive manufacturing system and control components15 Sep 2026US 12,734,582 B2Sciaky, Inc.
- Plastic mold steel plate and method for producing same15 Sep 2026US 12,735,760 B2Institute of Research of Iron and Steel, Jianagsu Province/Sha-Steel, Co., Ltd. (Cn)
- Pressure vessel steel having excellent hydrogen induced cracking resistance, and manufacturing method therefor15 Sep 2026US 12,735,761 B2Posco
- Method for manufacturing grain-oriented electrical steel sheet8 Sep 2026US 12,729,412 B2Jfe Steel Corporation
- Low-alloy steel24 Sep 2026US 2026/0286488 A1ELSmidth A/S
- High-strength and low-iron-loss non-oriented electrical steel plate and manufacturing method therefor17 Sep 2026US 2026/0275466 A1Baoshan Iron & Steel Co., Ltd.
- Steel sheet and method for manufacturing steel sheet10 Sep 2026US 2026/0265889 A1Kabushiki Kaisha Kobe Seiko Sho (Kobe Steel, Ltd.)
- Method for heat treating a part made of an FeCoV alloy3 Sep 2026US 2026/0258520 A1
- Forged part of steel and a method of manufacturing thereof3 Sep 2026US 2026/0258537 A1
Most cited
By later US patents
- In-situ generation of heat treating atmospheres using non-cryogenically produced nitrogen320US 5,298,089 AAir Products and Chemicals, Inc. · 1994
- Heat management drilling system and method51US 6,374,932 B12002
- Manufacturing method for hollow stabilizer35US 6,682,610 B1NHK Spring Co., Ltd. · 2004
- Steel for oil well pipe with high corrosion resistance to wet carbon dioxide and seawater, and a seamless oil well pipe33US 6,217,676 B1Sumitomo Metal Industries, Ltd. · 2001
- Metal card32US 8,944,810 B2CompoSecure, LLC · 2015