B21J 17/00
Forge furnaces
Official title: Forge furnaces (furnaces for heat treatment C21D9/00; furnaces in general F27)
B21J17/00 (Forge furnaces) appears on 23 US grants and 23 published applications in this corpus.
Search patents in B21J- Granted patents
- 23
- Published applications
- 23
- Assignees
- 22
- Inventors
- 76
- Latest grant
- 4 Mar 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 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 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 1 |
| 2004 | 2 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 2 | 2 |
| 2008 | 0 | 2 |
| 2009 | 1 | 1 |
| 2010 | 0 | 0 |
| 2011 | 1 | 1 |
| 2012 | 1 | 1 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 1 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 2 |
| 2020 | 1 | 2 |
| 2021 | 2 | 1 |
| 2022 | 2 | 2 |
| 2023 | 0 | 0 |
| 2024 | 1 | 0 |
| 2025 | 1 | 1 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Aluminum alloy pre-strengthening and hot forming production line4 Mar 2025US 12,241,150 B1Wuhan University of Technology
- Forging device and method for manufacturing forged product30 Jan 2024US 11,883,875 B2Proterial, Ltd.
- Device for preheating rod-like workpieces6 Dec 2022US 11,519,668 B2Extrutec GmbH
- Wheel automatic closed die forging production line and aluminum alloy wheel4 Oct 2022US 11,458,528 B2CITIC Dicastal Co., Ltd.
- Kit comprising components made from planar sheet material for forming forge table and forge pot, and valve component for selectively communicating airflow source and forge pot14 Dec 2021US 11,198,174 B2Cloverdale Forge
- Composite forging device and metal lamination equipment using the same30 Apr 2026US 2026/0115785 A1Industrial Technology Research Institute
- Conduction pre-heating of sheet for hot forming15 Jan 2026US 2026/0014612 A1Magna International Inc.
- Aluminum alloy pre-strengthening and hot forming production line27 Feb 2025US 2025/0066894 A1Wuhan University of Technology
- Forging Device And Method For Manufacturing Forged Product14 Jul 2022US 2022/0219225 A1Hitachi Metals, Ltd.
- Device for preheating rod-like workpieces3 Feb 2022US 2022/0034587 A1Extrutec GmbH
Most cited
By later US patents
- Heating nonmagnetic metal workpieces7US 4,577,081 APark-Ohio Industries, Inc. · 1986
- Electric slot furnace5US 4,159,415 AKlein Tools, Inc. · 1979
- Heating magnetic metal workpieces4US 4,619,717 APark-Ohio Industries, Inc. · 1986
- Thermal forming of refractory alloy surgical needles and fixture and apparatus4US 8,062,437 B2Ethicon, Inc. · 2011
- Press for holding and pressing a workpiece3US 7,194,887 B2Snecma Moteurs · 2007