F23G 5/38
Multi-hearth arrangements
F23G5/38 (Multi-hearth arrangements) appears on 45 US grants and 30 published applications in this corpus.
Search patents in F23G- Granted patents
- 45
- Published applications
- 30
- Assignees
- 26
- Inventors
- 88
- Latest grant
- 25 Mar 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 1 |
| 2004 | 1 | 0 |
| 2005 | 1 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 1 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 2 |
| 2014 | 1 | 4 |
| 2015 | 4 | 3 |
| 2016 | 1 | 1 |
| 2017 | 2 | 1 |
| 2018 | 2 | 2 |
| 2019 | 2 | 2 |
| 2020 | 2 | 4 |
| 2021 | 5 | 2 |
| 2022 | 0 | 2 |
| 2023 | 1 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Ecological slope anti-corrosion timber pile, and treatment device and treatment method therefor25 Mar 2025US 12,257,737 B2Harbin Normal University
- Containerized expeditionary solid waste disposal system8 Aug 2023US 11,719,432 B2Eco Burn Inc.
- Stable and environmentally friendly combustion method for biomass gasification, combustible gas, and environmentally friendly combustion chamber12 Oct 2021US 11,143,400 B2Nanjing Forestry University
- Woody biomass cogeneration plant for the continuous production of heat and electricity3 Aug 2021US 11,079,105 B2Reset S.R.L.
- Containerized expeditionary solid waste disposal system6 Apr 2021US 10,969,099 B2Eco Burn Inc.
- Ecological Slope Anti-corrosion Timber Pile, and Treatment Device and Treatment Method Therefor16 Jan 2025US 2025/0018596 A1Harbin Normal University
- Vertical continuous multiphase reactor for the clean production of hydrocarbons and energy and thermochemical method carried out25 May 2023US 2023/0159832 A1Biotecnologia Y Bioingenieria Coe S.A
- System for recycling waste heat using solid refuse fuel incinerator17 Feb 2022US 2022/0049847 A1
- Method and apparatus for thermal processing20 Jan 2022US 2022/0018538 A1
- Containerized Expeditionary Solid Waste Disposal System8 Jul 2021US 2021/0207800 A1Eco Burn Inc.
Most cited
By later US patents
- Method and apparatus for burning solid waste products using a plurality of multiple hearth furnaces71US 4,679,268 AAssociated Mechanical Contractors, Inc. · 1987
- Furnace combustion zone temperature control method56US 5,018,458 AZimpro Passavant Environmental Systems, Inc. · 1991
- Reducing hydrogen concentration in pecvd amorphous silicon carbide films26US 5,800,878 AAPPLIED Materials.Inc. · 1998
- Method and furnace for decomposing solid waste materials15US 5,628,261 AChemical Lime Company · 1997
- Method for controlling temperatures in the afterburner and combustion hearths of a multiple hearth furnace14US 4,453,474 ASterling Drug Inc. · 1984