C22C 38/004
Very low carbon steels, i.e. having a carbon content of less than
Official title: {Very low carbon steels, i.e. having a carbon content of less than 0,01%}
C22C38/004 (Very low carbon steels, i.e. having a carbon content of less than) appears on 805 US grants and 1,364 published applications in this corpus.
Search patents in C22C- Granted patents
- 805
- Published applications
- 1,364
- Assignees
- 210
- Inventors
- 1,974
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 7 | 0 |
| 2001 | 7 | 6 |
| 2002 | 22 | 35 |
| 2003 | 33 | 38 |
| 2004 | 32 | 41 |
| 2005 | 12 | 20 |
| 2006 | 12 | 16 |
| 2007 | 8 | 15 |
| 2008 | 13 | 12 |
| 2009 | 9 | 17 |
| 2010 | 16 | 18 |
| 2011 | 9 | 21 |
| 2012 | 11 | 26 |
| 2013 | 10 | 40 |
| 2014 | 15 | 58 |
| 2015 | 14 | 98 |
| 2016 | 32 | 53 |
| 2017 | 49 | 56 |
| 2018 | 43 | 50 |
| 2019 | 51 | 51 |
| 2020 | 39 | 72 |
| 2021 | 54 | 68 |
| 2022 | 54 | 94 |
| 2023 | 45 | 115 |
| 2024 | 56 | 111 |
| 2025 | 79 | 126 |
| 2026 | 65 | 107 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Weld structure, stainless steel welded structure, stainless steel welded container and stainless steel22 Sep 2026US 12,741,344 B2Nippon Steel Stainless Steel Corporation
- Non-oriented electrical steel sheet22 Sep 2026US 12,741,446 B2Jfe Steel Corporation
- Non-oriented electrical steel sheet, method for producing same, and hot-rolled steel sheet22 Sep 2026US 12,742,223 B2Nippon Steel Corporation
- Alloyed hot-dip galvanized steel sheet22 Sep 2026US 12,742,234 B2Nippon Steel Corporation
- Wound core22 Sep 2026US 12,744,149 B2Nippon Steel Corporation
- Fe-based alloy powder and mixed powder8 Oct 2026US 2026/0308734 A1Daido Steel Co., Ltd.
- Stainless steel for fuel cell separator8 Oct 2026US 2026/0312081 A1Posco
- Low-coercivity wire rod and manufacturing method therefor24 Sep 2026US 2026/0286481 A1Baoshan Iron & Steel Co., Ltd.
- Non-oriented electrical steel sheet and method for producing same24 Sep 2026US 2026/0286482 A1Jfe Steel Corporation
- High-strength stainless steel seamless pipe for oil wells24 Sep 2026US 2026/0286485 A1Jef Steel Corporation
Most cited
By later US patents
- Fe-ni alloy having high strength and low thermal expansion, a shadow mask made of the alloy, a braun tube with the shadow mask, a lead frame made of the alloy and a semiconductor element with lead frame46US 6,592,810 B2Hitachi Metals, Ltd. · 2003
- Austenitic stainless steel43US 7,101,446 B2Sumitomo Metal Industries, Ltd. · 2006
- Steel pipe having high formability and method for producing the same36US 6,632,296 B2Nippon Steel Corporation · 2003
- Surface treated steel strip with minimal plating defects and method for making23US 5,447,802 AKawasaki Steel Corporation · 1995
- Ultra-high-strength precipitation-hardenable stainless steel and strip made therefrom23US 6,630,103 B2CRS Holding, Inc. · 2003