C22C 38/20
With copper
Official title: with copper
C22C38/20 (With copper) appears on 742 US grants and 1,213 published applications in this corpus.
Search patents in C22C- Granted patents
- 742
- Published applications
- 1,213
- Assignees
- 268
- Inventors
- 2,134
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 4 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 2 |
| 2002 | 4 | 3 |
| 2003 | 4 | 7 |
| 2004 | 5 | 7 |
| 2005 | 4 | 5 |
| 2006 | 3 | 8 |
| 2007 | 3 | 7 |
| 2008 | 1 | 9 |
| 2009 | 2 | 22 |
| 2010 | 6 | 17 |
| 2011 | 11 | 12 |
| 2012 | 7 | 21 |
| 2013 | 9 | 56 |
| 2014 | 14 | 45 |
| 2015 | 27 | 87 |
| 2016 | 24 | 84 |
| 2017 | 41 | 62 |
| 2018 | 67 | 75 |
| 2019 | 54 | 76 |
| 2020 | 66 | 94 |
| 2021 | 59 | 95 |
| 2022 | 76 | 86 |
| 2023 | 46 | 84 |
| 2024 | 49 | 91 |
| 2025 | 73 | 85 |
| 2026 | 53 | 73 |
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
- Welded rail29 Sep 2026US 12,747,483 B2Nippon Steel Corporation
- Steel sheet for hot press formed member22 Sep 2026US 12,741,447 B2Posco
- Pressure vessel steel having excellent hydrogen induced cracking resistance, and manufacturing method therefor15 Sep 2026US 12,735,761 B2Posco
- Wire rod for 5000 MPa-grade diamond wire and production method therefor15 Sep 2026US 12,735,763 B2Institute of Research of Iron and Steel, Jiangsu Province/Sha-Steel, Co. Ltd (Cn)
- Manufacturing method of flash butt welded rail1 Oct 2026US 2026/0295710 A1Nippon Steel Corporation
- High-hole-expansion-rate and ultrahigh-plasticity steel and manufacturing method therefor17 Sep 2026US 2026/0275469 A1Baoshan Iron & Steel Co., Ltd.
- Steel material17 Sep 2026US 2026/0275472 A1Nippon Steel Corporation
- Steel material10 Sep 2026US 2026/0265888 A1Nippon Steel Corporation
- Smelting and continuous casting method for high cr-si alloyed hot-formed steel3 Sep 2026US 2026/0257267 A1Bengang Steel Plates Co., Ltd.
Most cited
By later US patents
- Elongated percussive rock drilling element66US 6,547,891 B2Sandvik AB · 2003
- Austenitic, non-magnetic, stainless steel alloy57US 5,094,812 ACarpenter Technology Corporation · 1992
- Abrasion resistant iron base sintered alloy material for valve seat and valve seat made of iron base sintered alloy52US 6,139,599 ANippon Piston Ring Co., Ltd. · 2000
- Iron-based alloy for internal combustion engine valve seat inserts52US 6,436,338 B1L. E. Jones Company · 2002
- Seamless steel tube which is intended to be used as a guide pipe and production method thereof34US 8,002,910 B2Dalmine S.p.A. · 2011