F27D 11/00
Arrangement of elements for electric heating in or on furnaces
F27D11/00 (Arrangement of elements for electric heating in or on furnaces) appears on 792 US grants and 779 published applications in this corpus.
Search patents in F27D- Granted patents
- 792
- Published applications
- 779
- Assignees
- 590
- Inventors
- 2,028
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 34 | 0 |
| 1977 | 23 | 0 |
| 1978 | 20 | 0 |
| 1979 | 16 | 0 |
| 1980 | 12 | 0 |
| 1981 | 12 | 0 |
| 1982 | 9 | 0 |
| 1983 | 12 | 0 |
| 1984 | 14 | 0 |
| 1985 | 14 | 0 |
| 1986 | 22 | 0 |
| 1987 | 8 | 0 |
| 1988 | 4 | 0 |
| 1989 | 10 | 0 |
| 1990 | 5 | 0 |
| 1991 | 8 | 0 |
| 1992 | 7 | 0 |
| 1993 | 10 | 0 |
| 1994 | 4 | 0 |
| 1995 | 4 | 0 |
| 1996 | 6 | 0 |
| 1997 | 5 | 0 |
| 1998 | 7 | 0 |
| 1999 | 8 | 0 |
| 2000 | 8 | 0 |
| 2001 | 7 | 3 |
| 2002 | 7 | 6 |
| 2003 | 9 | 10 |
| 2004 | 12 | 9 |
| 2005 | 6 | 10 |
| 2006 | 6 | 14 |
| 2007 | 10 | 7 |
| 2008 | 4 | 12 |
| 2009 | 1 | 13 |
| 2010 | 6 | 16 |
| 2011 | 2 | 24 |
| 2012 | 7 | 28 |
| 2013 | 17 | 41 |
| 2014 | 28 | 39 |
| 2015 | 21 | 60 |
| 2016 | 30 | 55 |
| 2017 | 44 | 65 |
| 2018 | 38 | 52 |
| 2019 | 48 | 31 |
| 2020 | 44 | 48 |
| 2021 | 32 | 36 |
| 2022 | 32 | 33 |
| 2023 | 26 | 31 |
| 2024 | 34 | 43 |
| 2025 | 21 | 62 |
| 2026 | 18 | 31 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Induction coils as non-contact temperature boosters and flow boosters for ferrous and non-ferrous materials in a furnace6 Oct 2026US 12,753,973 B2Inductotherm Corp.
- Dental furnace and method for operating a dental furnace29 Sep 2026US 12,747,914 B2Vita Zahnfabrik H. Rauter GmbH & Co.KG
- Remelting plant for metals, and method for remelting metals8 Sep 2026US 12,729,415 B2ALD Vacuum Technologies GmbH
- Fabrication of metallic parts by additive manufacturing25 Aug 2026US 12,715,033 B2Elmet Technologies, Inc.
- Method of manufacturing semiconductor device, substrate processing method, substrate processing apparatus and non-transitory computer-readable recording medium25 Aug 2026US 12,721,093 B2Kokusai Electric Corporation
- Method and device for plasma heating of the internal walls of a vacuum furnace1 Oct 2026US 2026/0302140 A1
- Heating system and annealing furnace using such system17 Sep 2026US 2026/0276307 A1Ningbo Sachsen Industrial Technology Co.,Ltd.
- Co2-free production of artificial pozzolans, in particular from clay10 Sep 2026US 2026/0265126 A1thyssenkrupp AG
- Electrode Material Sintering System27 Aug 2026US 2026/0249353 A1LG Chem.Ltd.
- Direct reduction of iron by hydrogen plasma in a rotary kiln reactor27 Aug 2026US 2026/0250794 A1Uchicago Argonne, LLC
Most cited
By later US patents
- Tunnel oven121US 4,554,437 APet Incorporated · 1985
- Inline degassing apparatus111US 6,887,424 B2Pyrotek Japan Limited · 2005
- Segmented electric furnace102US 5,132,984 ANorton Company · 1992
- Load chamber with heater for a disk sputtering system75US 8,399,809 B1WD Media, LLC · 2013
- Immersion heater for molten metal74US 9,108,244 B22015