C21D 1/76
Adjusting the composition of the atmosphere
C21D1/76 (Adjusting the composition of the atmosphere) appears on 620 US grants and 788 published applications in this corpus.
Search patents in C21D- Granted patents
- 620
- Published applications
- 788
- Assignees
- 231
- Inventors
- 1,487
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 6 | 0 |
| 1978 | 3 | 0 |
| 1979 | 4 | 0 |
| 1980 | 8 | 0 |
| 1981 | 6 | 0 |
| 1982 | 4 | 0 |
| 1983 | 5 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 4 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 10 | 0 |
| 1992 | 9 | 0 |
| 1993 | 11 | 0 |
| 1994 | 16 | 0 |
| 1995 | 7 | 0 |
| 1996 | 7 | 0 |
| 1997 | 9 | 0 |
| 1998 | 13 | 0 |
| 1999 | 7 | 0 |
| 2000 | 6 | 0 |
| 2001 | 5 | 2 |
| 2002 | 4 | 6 |
| 2003 | 6 | 7 |
| 2004 | 1 | 11 |
| 2005 | 4 | 3 |
| 2006 | 3 | 10 |
| 2007 | 3 | 5 |
| 2008 | 8 | 4 |
| 2009 | 2 | 10 |
| 2010 | 1 | 12 |
| 2011 | 3 | 12 |
| 2012 | 9 | 12 |
| 2013 | 9 | 19 |
| 2014 | 8 | 13 |
| 2015 | 10 | 21 |
| 2016 | 10 | 25 |
| 2017 | 23 | 16 |
| 2018 | 22 | 26 |
| 2019 | 10 | 22 |
| 2020 | 15 | 48 |
| 2021 | 23 | 53 |
| 2022 | 40 | 92 |
| 2023 | 38 | 101 |
| 2024 | 70 | 121 |
| 2025 | 90 | 77 |
| 2026 | 49 | 60 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Zinc or zinc-alloy coated strip or steel with improved zinc adhesion15 Sep 2026US 12,735,780 B2voestalpine Stahl GmbH
- Method for manufacturing grain-oriented electrical steel sheet8 Sep 2026US 12,729,412 B2Jfe Steel Corporation
- Steel sheet1 Sep 2026US 12,723,295 B2Nippon Steel Corporation
- Highly corrosion-resistant stainless steel component and method of manufacturing same, method of heat-treating stainless steel component, and rolling bearing and method for manufacturing same25 Aug 2026US 12,716,109 B2MINEBEA MITSUMI Inc.
- Steel sheet and plated steel sheet25 Aug 2026US 12,716,111 B2Nippon Steel Corporation
- Non-oriented silicon steel palte and production method therefor10 Sep 2026US 2026/0265878 A1Institute of Research of Iron and Steel, Jiangsu Province/Sha-Steel, Co. Ltd (Cn)
- Hot stamping component and manufacturing method therefor27 Aug 2026US 2026/0249342 A1Hyundai Steel Company
- Steel sheet, member, and part, and methods of producing same27 Aug 2026US 2026/0250814 A1Jfe Steel Corporation
- Steel sheet for hot-stamping, method for manufacturing steel sheet for hot-stamping, and hot-stamped formed body27 Aug 2026US 2026/0250815 A1Nippon Steel Corporation
- Non-oriented electrical steel plate and manufacturing method therefor20 Aug 2026US 2026/0242904 A1Baoshan Iron & Steel Co., Ltd.
Most cited
By later US patents
- Hydrogen annealing process and apparatus therefor428US 6,527,884 B1Hitachi Kokusai Electric Inc. · 2003
- In-situ generation of heat treating atmospheres using non-cryogenically produced nitrogen320US 5,298,089 AAir Products and Chemicals, Inc. · 1994
- Thermal treating apparatus and process40US 5,997,286 AFord Motor Company · 1999
- Apparatus for scaleless induction heating34US 5,414,246 AFord Motor Company · 1995
- Furnace and method with sensor32US 4,362,580 ACorning Glass Works · 1982