F27B 9/045
Furnaces with controlled atmosphere
Official title: {Furnaces with controlled atmosphere}
F27B9/045 (Furnaces with controlled atmosphere) appears on 139 US grants and 136 published applications in this corpus.
Search patents in F27B- Granted patents
- 139
- Published applications
- 136
- Assignees
- 137
- Inventors
- 364
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 4 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 7 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 5 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 3 |
| 2003 | 2 | 3 |
| 2004 | 2 | 8 |
| 2005 | 2 | 3 |
| 2006 | 4 | 5 |
| 2007 | 0 | 2 |
| 2008 | 3 | 6 |
| 2009 | 6 | 8 |
| 2010 | 4 | 7 |
| 2011 | 3 | 4 |
| 2012 | 4 | 4 |
| 2013 | 3 | 2 |
| 2014 | 4 | 10 |
| 2015 | 1 | 8 |
| 2016 | 8 | 5 |
| 2017 | 3 | 4 |
| 2018 | 2 | 5 |
| 2019 | 2 | 6 |
| 2020 | 2 | 8 |
| 2021 | 5 | 2 |
| 2022 | 5 | 6 |
| 2023 | 5 | 8 |
| 2024 | 4 | 6 |
| 2025 | 5 | 10 |
| 2026 | 4 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Device for induction heating of at least one workpiece and method for induction heating of at least one workpiece12 May 2026US 12,624,896 B2Sms Elotherm GmbH
- Stretching unit as well as method for reducing non-uniform temperatures and air flows in a film stretching unit10 Mar 2026US 12,571,591 B2BrüCkner Maschinenbau GmbH & Co. KG
- Heat treatment system17 Feb 2026US 12,553,666 B2NGK Insulators, Ltd.
- Method for manufacturing ceramic product containing silicon carbide17 Feb 2026US 12,553,667 B2NGK Insulators, Ltd.
- Graphitization apparatus for manufacturing artificial graphite using laser23 Sep 2025US 12,422,191 B1Efc Co., Ltd.
- Apparatus for firing cathode material of secondary battery18 Jun 2026US 2026/0171467 A1Posco Future M Co., Ltd.
- Rapid ceramic processing techniques and equipment7 May 2026US 2026/0124785 A1QuantumScape Battery, Inc.
- Oven2 Apr 2026US 2026/0092739 A1Illinois Tool Works Inc.
- Method for processing composite material waste, device for implementing the method and recycled fiber obtained thereby11 Dec 2025US 2025/0376570 A1Alpha Recyclage Composites
- Heat treatment line for a hot strip6 Nov 2025US 2025/0340966 A1SMS group GmbH
Most cited
By later US patents
- Recycling carbon fibre81US 7,922,871 B2Recycled Carbon Fibre Limited · 2011
- Flux-free soldering of aluminum-containing workpieces in a controlled atmosphere39US 3,982,887 AVereinigte Aluminium-Werke Aktiengesellschaft · 1976
- Seal assembly for thermal treatment furnaces using an atmospheric gas containing hydrogen gas32US 5,693,288 ANisshin Steel Co., Ltd. · 1997
- Impedance-heated furnace32US 5,869,810 A1999
- Method of manufacturing crystalline silicon carbide28US 4,504,453 ATateho Kagaku Kogyo Kabushiki Kaisha · 1985