C21C 1/08
Manufacture of cast-iron
C21C1/08 (Manufacture of cast-iron) appears on 86 US grants and 54 published applications in this corpus.
Search patents in C21C- Granted patents
- 86
- Published applications
- 54
- Assignees
- 79
- Inventors
- 218
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 1 | 0 |
| 1978 | 5 | 0 |
| 1979 | 4 | 0 |
| 1980 | 4 | 0 |
| 1981 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 5 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 3 |
| 2004 | 0 | 5 |
| 2005 | 2 | 2 |
| 2006 | 1 | 1 |
| 2007 | 0 | 1 |
| 2008 | 2 | 1 |
| 2009 | 1 | 1 |
| 2010 | 0 | 2 |
| 2011 | 0 | 3 |
| 2012 | 1 | 6 |
| 2013 | 3 | 1 |
| 2014 | 1 | 1 |
| 2015 | 0 | 4 |
| 2016 | 2 | 3 |
| 2017 | 3 | 2 |
| 2018 | 0 | 3 |
| 2019 | 0 | 2 |
| 2020 | 3 | 0 |
| 2021 | 1 | 3 |
| 2022 | 4 | 4 |
| 2023 | 0 | 1 |
| 2024 | 2 | 2 |
| 2025 | 2 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Direct current electric arc furnace22 Sep 2026US 12,742,218 B2Masercata Oy
- Cast iron, in particular for components of disc brakes18 Nov 2025US 12,473,617 B2Brembo S.p.A.
- Vermicular cast iron alloy, combustion engine block and head5 Aug 2025US 12,378,646 B2Tupy S. A.
- Foundry coke products and associated processing methods via cupolas2 Apr 2024US 11,946,108 B2Suncoke Technology and Development LLC
- Non-magnesium process to produce compacted graphite iron (CGI)2 Jan 2024US 11,859,270 B2Snam Alloys Pvt Ltd
- Cast iron comprising niobium particles and method for producing cast iron30 Apr 2026US 2026/0117348 A1Instituto HercíLio Randon
- Nickel magnesium wire injection system and method thereof18 Sep 2025US 2025/0290168 A1Deere & Company
- Foundry coke products and associated systems and processing methods via cupolas11 Jul 2024US 2024/0229173 A1Suncoke Technology and Development LLC
- Non-magnesium process to produce compacted graphite iron (cgi)21 Mar 2024US 2024/0093337 A1Snam Alloys Pvt Ltd
- Foundry coke products and associated processing methods via cupolas11 May 2023US 2023/0142380 A1Suncoke Technology and Development LLC
Most cited
By later US patents
- Hypereutectic white iron alloys comprising chromium and nitrogen and articles made therefrom37US 9,284,631 B22016
- Cotreatment of sewage and steelworks wastes22US 5,364,441 AIllawarra Technology Corporation Limited · 1994
- Metal melting method using electric arc furnace15US 3,985,545 A1976
- Formed briquettes, process for forming the same and process for utilizing the same in the manufacture of metals15US 4,497,661 AOhio & Pennsylvania Fuels Co, Ltd. · 1985
- Smelting ferrous materials11US 5,531,805 AIllawarra Technology Corporation Limited · 1996