F27B 9/06
Heated without contact between combustion gases and charge
Official title: heated without contact between combustion gases and charge; electrically heated
F27B9/06 (Heated without contact between combustion gases and charge) appears on 402 US grants and 267 published applications in this corpus.
Search patents in F27B- Granted patents
- 402
- Published applications
- 267
- Assignees
- 354
- Inventors
- 947
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 7 | 0 |
| 1978 | 6 | 0 |
| 1979 | 3 | 0 |
| 1980 | 10 | 0 |
| 1981 | 8 | 0 |
| 1982 | 3 | 0 |
| 1983 | 5 | 0 |
| 1984 | 9 | 0 |
| 1985 | 15 | 0 |
| 1986 | 14 | 0 |
| 1987 | 11 | 0 |
| 1988 | 14 | 0 |
| 1989 | 8 | 0 |
| 1990 | 14 | 0 |
| 1991 | 12 | 0 |
| 1992 | 8 | 0 |
| 1993 | 9 | 0 |
| 1994 | 11 | 0 |
| 1995 | 5 | 0 |
| 1996 | 8 | 0 |
| 1997 | 6 | 0 |
| 1998 | 4 | 0 |
| 1999 | 15 | 0 |
| 2000 | 9 | 0 |
| 2001 | 18 | 3 |
| 2002 | 8 | 7 |
| 2003 | 12 | 9 |
| 2004 | 9 | 12 |
| 2005 | 6 | 7 |
| 2006 | 3 | 8 |
| 2007 | 3 | 9 |
| 2008 | 6 | 11 |
| 2009 | 5 | 6 |
| 2010 | 4 | 8 |
| 2011 | 5 | 10 |
| 2012 | 3 | 4 |
| 2013 | 3 | 7 |
| 2014 | 5 | 10 |
| 2015 | 4 | 10 |
| 2016 | 7 | 15 |
| 2017 | 6 | 9 |
| 2018 | 9 | 18 |
| 2019 | 9 | 8 |
| 2020 | 11 | 10 |
| 2021 | 7 | 10 |
| 2022 | 4 | 15 |
| 2023 | 10 | 16 |
| 2024 | 9 | 12 |
| 2025 | 6 | 18 |
| 2026 | 11 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Apparatus and method for denaturing asbestos18 Aug 2026US 12,708,935 B2Thermachange Ltd
- Method and apparatus for manufacturing cement using rotary generated thermal energy28 Jul 2026US 12,692,192 B2Coolbrook Oy
- Burner, apparatus and method for the firing of ceramic articles16 Jun 2026US 12,656,062 B2Sacmi Forni & Filter S.P.A.
- Method and apparatus for heating fluids in processes related to refining and petrochemical industries using rotary generated thermal energy9 Jun 2026US 12,649,689 B2Coolbrook Oy
- 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
- Refining and/or petrochemical facility and apparatus for heating fluids in processes related to refining and petrochemical industries using rotary generated thermal energy17 Sep 2026US 2026/0274747 A1Coolbrook Oy
- Electrode heating device17 Sep 2026US 2026/0276305 A1LG Energy Solution, Ltd.
- Graphitization furnace27 Aug 2026US 2026/0251394 A1Birla Carbon U.S.A., Inc.
- Biomass Direct Reduced Iron23 Jul 2026US 2026/0209873 A1Technological Resources Pty. Limited
- Shuttle kiln with enhanced radiant heat retention9 Jul 2026US 2026/0194297 A1Corning Incorporated
Most cited
By later US patents
- Temperature control system for a thermal reactor499US 6,441,350 B1Brooks Automation, Inc. · 2002
- Tunnel oven121US 4,554,437 APet Incorporated · 1985
- Flue pressure control for tunnel kilns99US 4,235,830 AAluminum Company of America · 1980
- Tunnel-type conveyor oven having two types of heat sources62US 5,906,485 AReading Pretzel Machinery Corp. · 1999
- Continuous oven with a plurality of heating zones45US 5,440,101 AResearch Corporation · 1995