C21D 5/14
Graphitising
C21D5/14 (Graphitising) appears on 13 US grants and 13 published applications in this corpus.
Search patents in C21D- Granted patents
- 13
- Published applications
- 13
- Assignees
- 16
- Inventors
- 46
- Latest grant
- 2 Apr 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 1 |
| 2015 | 0 | 1 |
| 2016 | 1 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 3 |
| 2019 | 0 | 0 |
| 2020 | 2 | 2 |
| 2021 | 0 | 0 |
| 2022 | 1 | 2 |
| 2023 | 2 | 1 |
| 2024 | 1 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Method for controlling amount of silicon added to ductile cast iron, method for casting ductile cast iron, and cast product2 Apr 2024US 11,946,120 B2Shandong University of Technology
- Black heart malleable cast-iron and method for manufacturing same29 Aug 2023US 11,739,401 B2Proterial, Ltd.
- Centrifugally cast composite roll for hot rolling1 Aug 2023US 11,712,723 B2Proterial, Ltd.
- Method for producing plated black heart malleable cast iron member, plated black heart malleable cast iron member, and pipe joint1 Nov 2022US 11,486,014 B2Hitachi Metals, Ltd.
- Black heart malleable cast iron and manufacturing method thereof24 Nov 2020US 10,844,450 B2Hitachi Metals, Ltd.
- Method for Producing Plated Black Heart Malleable Cast Iron Member, and Plated Black Heart Malleable Cast Iron Member13 Mar 2025US 2025/0084497 A1Kuwana Metals, Ltd.
- Black Heart Malleable Cast Iron and Method for Producing Same23 Mar 2023US 2023/0086395 A1Hitachi Metals, Ltd.
- Centrifugally cast composite roll for hot rolling27 Oct 2022US 2022/0339685 A1Hitachi Metals, Ltd.
- Method for controlling amount of silicon added to ductile cast iron, method for casting ductile cast iron, and cast product13 Oct 2022US 2022/0325390 A1Shandong University of Technology
- Method for Producing Plated Black Heart Malleable Cast Iron Member, Plated Black Heart Malleable Cast Iron Member, and Pipe Join6 Aug 2020US 2020/0248279 A1Hitachi Metals, Ltd.
Most cited
By later US patents
- Iron-graphite composite powders and sintered articles produced therefrom10US 6,358,298 B1Quebec Metal Powders Limited · 2002
- Process for heat treatment of a metal workpiece9US 4,410,373 A1983
- Apparatus for the guiding of workpieces7US 5,992,616 AAEG-Elotherm G.m.b.H. · 1999
- Fine graphite uniform dispersion steel excellent in cold machinability, cuttability and hardenability, and production method for the same5US 5,830,285 ANippon Steel Corporation · 1998
- Centrifugally cast hot-rolling composite roll5US 9,358,758 B2Hitachi Metals, Ltd. · 2016