C21D 2211/005
Ferrite
C21D2211/005 (Ferrite) appears on 1,860 US grants and 2,876 published applications in this corpus.
Search patents in C21D- Granted patents
- 1,860
- Published applications
- 2,876
- Assignees
- 417
- Inventors
- 3,846
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 7 | 0 |
| 1984 | 6 | 0 |
| 1985 | 5 | 0 |
| 1986 | 7 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 8 | 0 |
| 1995 | 7 | 0 |
| 1996 | 11 | 0 |
| 1997 | 3 | 0 |
| 1998 | 11 | 0 |
| 1999 | 6 | 0 |
| 2000 | 6 | 0 |
| 2001 | 15 | 2 |
| 2002 | 10 | 15 |
| 2003 | 25 | 40 |
| 2004 | 17 | 40 |
| 2005 | 11 | 21 |
| 2006 | 9 | 21 |
| 2007 | 6 | 22 |
| 2008 | 9 | 36 |
| 2009 | 19 | 44 |
| 2010 | 20 | 62 |
| 2011 | 27 | 82 |
| 2012 | 37 | 60 |
| 2013 | 30 | 98 |
| 2014 | 54 | 128 |
| 2015 | 54 | 143 |
| 2016 | 59 | 125 |
| 2017 | 100 | 154 |
| 2018 | 87 | 173 |
| 2019 | 128 | 209 |
| 2020 | 123 | 206 |
| 2021 | 138 | 172 |
| 2022 | 170 | 216 |
| 2023 | 132 | 212 |
| 2024 | 128 | 218 |
| 2025 | 198 | 197 |
| 2026 | 149 | 180 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Steel sheet with excellent phosphatability and manufacturing method therefor6 Oct 2026US 12,753,458 B2Posco
- Steel sheet6 Oct 2026US 12,753,460 B2Nippon Steel Corporation
- Method of producing a steel sheet for cans6 Oct 2026US 12,753,472 B2Jfe Steel Corporation
- High-strength alloyed hot-dip galvanized steel sheet and manufacturing method therefor6 Oct 2026US 12,753,477 B2Kobe Steel, Ltd.
- Wire rod and steel wire for high strength spring, and manufacturing method therefor22 Sep 2026US 12,742,220 B2Posco
- Steel plate and method for manufacturing same8 Oct 2026US 2026/0308708 A1Posco
- Coated steel sheet, member, and methods for producing the same1 Oct 2026US 2026/0297713 A1Jfe Steel Corporation
- Steel sheet and manufacturing method thereof1 Oct 2026US 2026/0297715 A1Posco
- Press hardening method24 Sep 2026US 2026/0286457 A1
- Steel sheet, member, and methods for producing the same24 Sep 2026US 2026/0286479 A1Jfe Steel Corporation
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