C22C 38/00
Ferrous alloys
Official title: Ferrous alloys, e.g. steel alloys (cast-iron alloys C22C37/00)
C22C38/00 (Ferrous alloys) appears on 10,643 US grants and 13,885 published applications in this corpus.
Search patents in C22C- Granted patents
- 10,643
- Published applications
- 13,885
- Assignees
- 2,601
- Inventors
- 19,418
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 88 | 0 |
| 1977 | 101 | 0 |
| 1978 | 67 | 0 |
| 1979 | 52 | 0 |
| 1980 | 58 | 0 |
| 1981 | 62 | 0 |
| 1982 | 54 | 0 |
| 1983 | 78 | 0 |
| 1984 | 56 | 0 |
| 1985 | 57 | 0 |
| 1986 | 57 | 0 |
| 1987 | 56 | 0 |
| 1988 | 60 | 0 |
| 1989 | 109 | 0 |
| 1990 | 78 | 0 |
| 1991 | 80 | 0 |
| 1992 | 92 | 0 |
| 1993 | 77 | 0 |
| 1994 | 84 | 0 |
| 1995 | 76 | 0 |
| 1996 | 90 | 0 |
| 1997 | 98 | 0 |
| 1998 | 118 | 0 |
| 1999 | 115 | 0 |
| 2000 | 121 | 0 |
| 2001 | 164 | 38 |
| 2002 | 165 | 187 |
| 2003 | 170 | 236 |
| 2004 | 173 | 236 |
| 2005 | 88 | 183 |
| 2006 | 64 | 219 |
| 2007 | 73 | 241 |
| 2008 | 95 | 262 |
| 2009 | 105 | 351 |
| 2010 | 169 | 379 |
| 2011 | 180 | 397 |
| 2012 | 225 | 418 |
| 2013 | 204 | 519 |
| 2014 | 275 | 574 |
| 2015 | 316 | 791 |
| 2016 | 369 | 772 |
| 2017 | 481 | 762 |
| 2018 | 512 | 804 |
| 2019 | 637 | 863 |
| 2020 | 604 | 843 |
| 2021 | 601 | 761 |
| 2022 | 674 | 889 |
| 2023 | 553 | 861 |
| 2024 | 592 | 891 |
| 2025 | 667 | 720 |
| 2026 | 503 | 688 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C22C 38/18Containing chromium6,886
- C22C 38/02Containing silicon6,004
- C22C 38/04Containing manganese5,724
- C22C 38/06Containing aluminium4,595
- C22C 38/002Containing in, mg, or other elements not provided for in one single3,986
- C22C 38/001Containing n3,765
- C22C 38/12Containing tungsten, tantalum, molybdenum, vanadium, or niobium2,341
- C22C 38/14Containing titanium or zirconium1,991
All 16 subgroupsShow fewer
- C22C 38/16Containing copper1,625
- C22C 38/005Containing rare earths, i.e. sc, y, lanthanides1,622
- C22C 38/08Containing nickel1,587
- C22C 38/60Containing lead, selenium, tellurium, or antimony, or more than 0.04% by weight1,299
- C22C 38/008Containing tin902
- C22C 38/10Containing cobalt823
- C22C 38/004Very low carbon steels, i.e. having a carbon content of less than805
- C22C 38/007Containing silver23
Recent patents
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- 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
- Method for producing insulation coating treatment liquid for grain-oriented electrical steel sheet and method for producing grain-oriented electrical steel sheet8 Oct 2026US 2026/0308387 A1Nippon Steel Corporation
- A cold rolled martensitic steel and a method of martensitic steel thereof8 Oct 2026US 2026/0308706 A1
- Non-oriented electrical steel plate with high magnetic induction and manufacturing method thereof8 Oct 2026US 2026/0308707 A1Baoshan Iron & Steel Co., Ltd.
- Steel plate and method for manufacturing same8 Oct 2026US 2026/0308708 A1Posco
- Martensitic stainless steel strip8 Oct 2026US 2026/0308709 A1Proterial, Ltd.
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By later US patents
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