F27B 9/028
Multi-chamber type furnaces
Official title: {Multi-chamber type furnaces, (F27B9/029 takes precedence)}
F27B9/028 (Multi-chamber type furnaces) appears on 126 US grants and 121 published applications in this corpus.
Search patents in F27B- Granted patents
- 126
- Published applications
- 121
- Assignees
- 129
- Inventors
- 389
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 4 | 0 |
| 1987 | 1 | 0 |
| 1988 | 5 | 0 |
| 1989 | 6 | 0 |
| 1990 | 5 | 0 |
| 1991 | 6 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 4 |
| 2003 | 2 | 3 |
| 2004 | 4 | 3 |
| 2005 | 2 | 4 |
| 2006 | 3 | 6 |
| 2007 | 0 | 1 |
| 2008 | 3 | 4 |
| 2009 | 5 | 4 |
| 2010 | 4 | 8 |
| 2011 | 3 | 4 |
| 2012 | 5 | 2 |
| 2013 | 1 | 2 |
| 2014 | 2 | 4 |
| 2015 | 2 | 4 |
| 2016 | 3 | 6 |
| 2017 | 4 | 2 |
| 2018 | 3 | 2 |
| 2019 | 3 | 5 |
| 2020 | 2 | 5 |
| 2021 | 3 | 9 |
| 2022 | 6 | 2 |
| 2023 | 7 | 5 |
| 2024 | 7 | 10 |
| 2025 | 3 | 12 |
| 2026 | 1 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Firing furnace8 Sep 2026US 12,729,914 B2Samsung Electro-Mechanics Co., Ltd.
- Graphitization apparatus for manufacturing artificial graphite using laser23 Sep 2025US 12,422,191 B1Efc Co., Ltd.
- Oven slot cover22 Jul 2025US 12,366,413 B2SST Systems, Inc.
- Rapid ceramic processing techniques and equipment4 Mar 2025US 12,240,143 B2QuantumScape Battery, Inc.
- Substrate treating apparatus and substrate treating system comprising the same19 Nov 2024US 12,146,710 B2Semes Co., Ltd.
- Oven for heating an article on a conveyor1 Oct 2026US 2026/0298534 A1CPM Packaging Ltd
- Method for the heat treatment of a bi-material metal part and device for carrying out the method24 Sep 2026US 2026/0286853 A1Safran
- Method of heating a steel semi-product in a heating furnace, and associated heating furnace3 Sep 2026US 2026/0259005 A1
- Thermal treatment device, method and use2 Jul 2026US 2026/0185177 A1SMS group GmbH
- Apparatus for firing cathode material of secondary battery18 Jun 2026US 2026/0171467 A1Posco Future M Co., Ltd.
Most cited
By later US patents
- Thermal treating apparatus and process40US 5,997,286 AFord Motor Company · 1999
- Roller hearth type heat treating furnace27US 4,932,864 AChugai Ro Co., Ltd. · 1990
- Heat treatment method using a zoned tunnel furnace26US 4,966,547 ACentral Glass Company, Limited · 1990
- Kiln for firing ceramic materials such as tiles and the like25US 4,790,749 APoppi S.p.A. · 1988
- Multi-zone furnace system22US 4,586,898 ABTU Engineering Corporation · 1986