F05C 2201/0442
Spheroidal graphite cast iron
Official title: Spheroidal graphite cast iron, e.g. nodular iron, ductile iron
F05C2201/0442 (Spheroidal graphite cast iron) appears on 57 US grants and 44 published applications in this corpus.
Search patents in F05C- Granted patents
- 57
- Published applications
- 44
- Assignees
- 39
- Inventors
- 125
- Latest grant
- 4 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 0 |
| 2002 | 4 | 5 |
| 2003 | 3 | 3 |
| 2004 | 1 | 3 |
| 2005 | 5 | 5 |
| 2006 | 1 | 0 |
| 2007 | 1 | 4 |
| 2008 | 2 | 2 |
| 2009 | 0 | 2 |
| 2010 | 2 | 3 |
| 2011 | 1 | 2 |
| 2012 | 1 | 3 |
| 2013 | 2 | 5 |
| 2014 | 2 | 1 |
| 2015 | 4 | 1 |
| 2016 | 1 | 0 |
| 2017 | 2 | 1 |
| 2018 | 0 | 1 |
| 2019 | 0 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 0 |
| 2023 | 1 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Reduced heat exchange reciprocating compressor4 Nov 2025US 12,460,625 B2Officine Mario Dorin S.P.A.
- Cast piston for an internal combustion engine, consisting of an iron-based material27 Jun 2023US 11,686,270 B2Federal-Mogul Nurnberg GmbH
- Austempered grey iron scroll and method of making thereof24 Nov 2020US 10,844,855 B2Trane International Inc.
- Pump with corrosion resistant shaft and rotor surfaces4 Jul 2017US 9,695,824 B2
- Method for fabricating vane using a nodular graphite cast iron9 May 2017US 9,644,245 B2LG Electronics Inc.
- Reduced heat exchange reciprocating compressor13 Mar 2025US 2025/0084839 A1Officine Mario Dorin S.P.A.
- Scroll compressor with a compression section made of solid solution strengthened ferritic ductile iron23 Feb 2023US 2023/0055808 A1
- Cast piston for an internal combustion engine, consisting of an iron-based material15 Jul 2021US 2021/0215118 A1Federal-Mogul Nurnberg GmbH
- Austempered grey iron scroll and method of making thereof5 Jul 2018US 2018/0187678 A1Trane International Inc.
- Air compressor made of a light metal7 Sep 2017US 2017/0254322 A1WABCO GmbH
Most cited
By later US patents
- Rotary compressor having oxidizing and nitriding surface treatment39US 4,944,663 AHitachi, Ltd. · 1990
- Adjustable wearplates rotary pump26US 4,940,394 ABaker Hughes Incorporated · 1990
- Rotary piston type internal combustion engine22US 6,062,188 A2000
- Screw-type rotary fluid machine including rotors having treated surfaces20US 5,314,321 AHitachi, Ltd. · 1994
- Hermetic compressor and open compressor20US 6,302,665 B1Matsushita Electric Industrial Co., Ltd. · 2001