C21D 9/64
Patenting furnaces
C21D9/64 (Patenting furnaces) appears on 34 US grants and 15 published applications in this corpus.
Search patents in C21D- Granted patents
- 34
- Published applications
- 15
- Assignees
- 24
- Inventors
- 70
- Latest grant
- 18 Feb 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 4 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 2 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 1 | 0 |
| 2017 | 1 | 1 |
| 2018 | 1 | 1 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 2 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 2 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Steel wire rod enabling omission of softening heat treatment and method of manufacturing same18 Feb 2025US 12,227,824 B2Posco
- Filament11 Sep 2018US 10,072,317 B2Nippon Steel & Sumitomo Metal Corporation
- Process for manufacturing a profiled steel wire11 Apr 2017US 9,617,625 B2Arcelormittal Wire France
- Profiled steel wire with high mechanical characteristics resistant to hydrogen embrittlement2 Feb 2016US 9,249,486 B2Arcelormittal Wire France
- High-strength wire rod excellent in drawing characteristics and method of manufacturing the same13 Nov 2012US 8,308,875 B2Nippon Steel Corporation
- Steel wire and method of manufacturing steel wire16 Oct 2025US 2025/0320589 A1Sumitomo Electric Industries, Ltd.
- Heat- treated steel and heat treatment method for steel7 Nov 2024US 2024/0368718 A1Tokyo Rope Mfg. Co., Ltd.
- Wiredrawn product and method for manufacturing wiredrawn product6 Jun 2024US 2024/0183010 A1Tokyo Rope Mfg. Co., Ltd.
- Steel wire rod enabling omission of softening heat treatment and method of manufacturing same30 Dec 2021US 2021/0404039 A1Posco
- Heat exchange method, heat exchange medium, heat exchange device, patenting method, and carbon-steel wire18 Nov 2021US 2021/0355561 A1National University Corporation Kumamoto University
Most cited
By later US patents
- Method of producing steel wires each having very small diameter, high strength and excellent ductility13US 5,248,353 ANippon Steel Corporation · 1993
- Composite rubber bodies using steel cords for the reinforcement of rubber articles10US 5,603,208 ABridgestone Bekaert Steel Cord Co., Ltd. · 1997
- Process and apparatus for heat-treating carbon steel wires to obtain a fine pearlitic structure8US 4,983,227 ACompagnie Generale des Etablissements Michelin - Michelin & Cie · 1991
- Steel cords for the reinforcement of rubber articles8US 5,609,013 ABridgestone Bekaert Steel Cord Co., Ltd. · 1997
- Apparatus for the continuous treatment of metal objects7US 4,249,720 ATrefilarbed S.A. · 1981