C22C 37/04
Containing spheroidal graphite
Official title: containing spheroidal graphite
C22C37/04 (Containing spheroidal graphite) appears on 123 US grants and 148 published applications in this corpus.
Search patents in C22C- Granted patents
- 123
- Published applications
- 148
- Assignees
- 126
- Inventors
- 394
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 5 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 6 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 4 |
| 2003 | 5 | 3 |
| 2004 | 3 | 8 |
| 2005 | 3 | 2 |
| 2006 | 1 | 5 |
| 2007 | 1 | 0 |
| 2008 | 0 | 3 |
| 2009 | 0 | 5 |
| 2010 | 4 | 6 |
| 2011 | 1 | 11 |
| 2012 | 3 | 3 |
| 2013 | 6 | 6 |
| 2014 | 4 | 11 |
| 2015 | 3 | 7 |
| 2016 | 5 | 9 |
| 2017 | 10 | 11 |
| 2018 | 5 | 4 |
| 2019 | 4 | 10 |
| 2020 | 5 | 10 |
| 2021 | 3 | 2 |
| 2022 | 7 | 11 |
| 2023 | 6 | 6 |
| 2024 | 3 | 3 |
| 2025 | 4 | 4 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Iron alloy material for casting and iron casting11 Aug 2026US 12,703,902 B2Hinode, Ltd.
- Spheroidal graphite cast iron, cast article and automobile structure part made thereof, and method for producing spheroidal graphite cast iron article13 Jan 2026US 12,522,901 B2Proterial, Ltd.
- Wear resistant composite12 Aug 2025US 12,385,119 B2Conv Australia Holding Pty Ltd
- Additive for treating molten iron to produce cast iron with zero contraction and with Lonsdaleite-type spheroidal graphite5 Aug 2025US 12,378,618 B2
- Vermicular cast iron alloy, combustion engine block and head5 Aug 2025US 12,378,646 B2Tupy S. A.
- Hydrogen application with collector unit30 Jul 2026US 2026/0218672 A1Anglo Belgian Corporation NV
- Wear resistant composite7 May 2026US 2026/0125786 A1Conv Australia Holding Pty Ltd
- Cast iron comprising niobium particles and method for producing cast iron30 Apr 2026US 2026/0117348 A1Instituto HercíLio Randon
- Systems and methods for improving iron-based camshaft fatigue life27 Nov 2025US 2025/0360557 A1Cummins Inc.
- Additive for treating molten iron to produce cast iron with zero contraction and with lonsdaleite-type spheroidal graphite11 Sep 2025US 2025/0283187 A1
Most cited
By later US patents
- Lapping tools52US 5,041,173 AKabushiki Kaisha Toshiba · 1991
- Wear resistant cast iron alloy with spheroidal graphite separation and manufacturing method therefor29US 4,435,226 AGoetze AG · 1984
- Process for production of semisolidified slurry of iron-base alloy and process for production of cast iron castings by using a semisolidified slurry24US 8,486,329 B2Kogi Corporation · 2013
- Method of making ductile cast iron with improved strength15US 4,484,953 AFord Motor Company · 1984
- Austenitic ductile cast iron15US 8,372,335 B2Honeywell International Inc. · 2013