F23G 2203/20
Rotary drum furnace
F23G2203/20 (Rotary drum furnace) appears on 164 US grants and 86 published applications in this corpus.
Search patents in F23G- Granted patents
- 164
- Published applications
- 86
- Assignees
- 122
- Inventors
- 338
- Latest grant
- 24 Jun 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 4 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 5 | 0 |
| 1989 | 3 | 0 |
| 1990 | 12 | 0 |
| 1991 | 9 | 0 |
| 1992 | 9 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 7 | 0 |
| 1996 | 3 | 0 |
| 1997 | 6 | 0 |
| 1998 | 10 | 0 |
| 1999 | 8 | 0 |
| 2000 | 7 | 0 |
| 2001 | 10 | 0 |
| 2002 | 4 | 4 |
| 2003 | 0 | 2 |
| 2004 | 3 | 4 |
| 2005 | 6 | 5 |
| 2006 | 4 | 3 |
| 2007 | 1 | 2 |
| 2008 | 2 | 1 |
| 2009 | 0 | 1 |
| 2010 | 2 | 5 |
| 2011 | 1 | 3 |
| 2012 | 0 | 5 |
| 2013 | 1 | 3 |
| 2014 | 1 | 4 |
| 2015 | 2 | 4 |
| 2016 | 1 | 3 |
| 2017 | 1 | 4 |
| 2018 | 5 | 5 |
| 2019 | 3 | 3 |
| 2020 | 3 | 4 |
| 2021 | 3 | 6 |
| 2022 | 2 | 7 |
| 2023 | 2 | 3 |
| 2024 | 3 | 2 |
| 2025 | 5 | 3 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
- F23G 2203/208With interior agitating membersIndexing code29
- F23G 2203/212Sealing arrangements between rotary and stationary partsIndexing code28
- F23G 2203/206With charging ports in the sidewallIndexing code23
- F23G 2203/211Arrangement of a plurality of drumsIndexing code21
- F23G 2203/205With water-cooled wallIndexing code20
- F23G 2203/207With air supply ports in the sidewallIndexing code18
- F23G 2203/209With variable inclination of rotation axisIndexing code11
- F23G 2203/21With variable speed of rotationIndexing code8
Recent patents
- Apparatus, system and method for pyrolysing and combusting a material24 Jun 2025US 12,338,994 B2Eco-Global Energy Pty Limited
- Pyrolysis method of waste plastics using batch reactor13 May 2025US 12,296,504 B2SK Geo Centric Co., Ltd.
- Method and system for ash treatment22 Apr 2025US 12,281,372 B2Betolar Oyj
- Dynamic sealing structure and rotary kiln apparatus21 Jan 2025US 12,203,704 B2Henan Longcheng Coal High Efficiency Technology Application Co., Ltd.
- Waste processing system7 Jan 2025US 12,187,962 B2Circular Resources (IP) Pte Limited
- A rotary reactor for pyrolysis and torrefaction2 Oct 2025US 2025/0305675 A1Goenvi Technologies Private Limited
- Seal arrangement of a rotary kiln10 Jul 2025US 2025/0224178 A1Eagleburgmann Germany GmbH & Co.KG
- Integrated process of pyrolysis and gasification of waste and the derivatives thereof and apparatus for the implementation thereof27 Feb 2025US 2025/0066670 A1
- Pyrolysis Method of Waste Plastics Using Batch Reactor31 Oct 2024US 2024/0359368 A1SK Geo Centric Co., Ltd.
- Pyrolysis Method of Waste Plastics Using Batch Reactor1 Aug 2024US 2024/0253273 A1SK Geo Centric Co., Ltd.
Most cited
By later US patents
- Apparatus and method for high temperature disposal of hazardous waste materials59US 4,770,109 ARetech, Inc. · 1988
- Method for energy recovery from solid hazardous waste53US 4,850,290 AAsh Grove Cement Company · 1989
- Combustion process having improved temperature distribution45US 4,957,050 AUnion Carbide Corporation · 1990
- Hazardous waste multi-sectional rotary kiln incinerator38US 5,005,493 AAmerican Combustion, Inc. · 1991
- Incineration system37US 4,395,958 AIndustronics, Inc. · 1983