C21D 6/002
Containing cr
Official title: {containing Cr (C21D6/004 takes precedence)}
C21D6/002 (Containing cr) appears on 1,146 US grants and 1,800 published applications in this corpus.
Search patents in C21D- Granted patents
- 1,146
- Published applications
- 1,800
- Assignees
- 426
- Inventors
- 3,118
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 5 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 0 | 0 |
| 1995 | 7 | 0 |
| 1996 | 6 | 0 |
| 1997 | 6 | 0 |
| 1998 | 6 | 0 |
| 1999 | 9 | 0 |
| 2000 | 11 | 0 |
| 2001 | 9 | 2 |
| 2002 | 12 | 11 |
| 2003 | 7 | 10 |
| 2004 | 9 | 18 |
| 2005 | 3 | 17 |
| 2006 | 4 | 12 |
| 2007 | 5 | 17 |
| 2008 | 3 | 27 |
| 2009 | 11 | 22 |
| 2010 | 21 | 34 |
| 2011 | 18 | 29 |
| 2012 | 18 | 32 |
| 2013 | 17 | 50 |
| 2014 | 16 | 38 |
| 2015 | 24 | 127 |
| 2016 | 34 | 98 |
| 2017 | 60 | 83 |
| 2018 | 70 | 107 |
| 2019 | 71 | 133 |
| 2020 | 84 | 128 |
| 2021 | 91 | 92 |
| 2022 | 104 | 133 |
| 2023 | 78 | 160 |
| 2024 | 83 | 173 |
| 2025 | 122 | 123 |
| 2026 | 90 | 124 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Forged steel roll for cold rolling6 Oct 2026US 12,752,325 B2Nippon Steel Corporation
- Ultra-high strength cold rolled steel sheet having excellent bendability, and method of manufacturing same6 Oct 2026US 12,753,455 B2Posco
- High-strength electrogalvannealed steel sheet and method for manufacturing the same6 Oct 2026US 12,753,456 B2Jfe Steel Corporation
- Hot rolled high strength steel strip having high hole expansion ratio6 Oct 2026US 12,753,461 B2Tata Steel Ijmuiden B.V.
- Wire rod and steel wire for high strength spring, and manufacturing method therefor22 Sep 2026US 12,742,220 B2Posco
- Coated steel sheet, member, and methods for producing the same1 Oct 2026US 2026/0297713 A1Jfe Steel Corporation
- Steel sheet and plated steel sheet1 Oct 2026US 2026/0297714 A1Nippon Steel Corporation
- Steel sheet and manufacturing method thereof1 Oct 2026US 2026/0297715 A1Posco
- Steel sheet, member, and methods for producing the same24 Sep 2026US 2026/0286459 A1Jfe Steel Corporation
- High yield ratio-type high-strength steel sheet and method for manufacturing same24 Sep 2026US 2026/0286460 A1Posco
Most cited
By later US patents
- Time sequenced heating of multiple layers in a hydrocarbon containing formation225US 7,635,023 B2Shell Oil Company · 2009
- Temperature limited heaters using phase transformation of ferromagnetic material186US 7,597,147 B2Shell Oil Company · 2009
- Wellhead with non-ferromagnetic materials184US 7,533,719 B2Shell Oil Company · 2009
- Compositions produced using an in situ heat treatment process172US 7,604,052 B2Shell Oil Company · 2009
- Sour gas injection for use with in situ heat treatment163US 7,610,962 B2Shell Oil Company · 2009