F27B 7/14
Rotary-drum furnaces, i.e. horizontal or slightly inclined: with means for agitating or
Official title: with means for agitating or moving the charge
F27B7/14 (Rotary-drum furnaces, i.e. horizontal or slightly inclined: with means for agitating or) appears on 145 US grants and 97 published applications in this corpus.
Search patents in F27B- Granted patents
- 145
- Published applications
- 97
- Assignees
- 127
- Inventors
- 324
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 5 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 5 | 0 |
| 1982 | 3 | 0 |
| 1983 | 4 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 4 | 0 |
| 1987 | 5 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 5 | 0 |
| 1994 | 6 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 6 | 0 |
| 2000 | 4 | 0 |
| 2001 | 6 | 2 |
| 2002 | 4 | 3 |
| 2003 | 2 | 2 |
| 2004 | 4 | 3 |
| 2005 | 1 | 2 |
| 2006 | 0 | 3 |
| 2007 | 2 | 3 |
| 2008 | 1 | 1 |
| 2009 | 2 | 3 |
| 2010 | 1 | 2 |
| 2011 | 2 | 2 |
| 2012 | 2 | 3 |
| 2013 | 1 | 6 |
| 2014 | 1 | 4 |
| 2015 | 4 | 3 |
| 2016 | 4 | 5 |
| 2017 | 2 | 5 |
| 2018 | 4 | 1 |
| 2019 | 2 | 2 |
| 2020 | 3 | 6 |
| 2021 | 2 | 1 |
| 2022 | 2 | 1 |
| 2023 | 4 | 12 |
| 2024 | 1 | 8 |
| 2025 | 9 | 10 |
| 2026 | 3 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Deployable multi-zone rotary-kiln system and method for recovery of gallium oxide from electronic waste15 Sep 2026US 12,735,769 B1Simple Approach Systems, Inc.
- Device for smelting and regenerating phosphogypsum using high-temperature ceramsite and method for using same8 Sep 2026US 12,729,157 B2Hubei Juhai Environmental Technology Co., Ltd.
- Rotary kiln14 Jul 2026US 12,680,760 B2LG Chem.Ltd.
- Apparatus and method for drying material and asphalt mixing facility having such an apparatus18 Nov 2025US 12,474,118 B2Benninghoven Zweigniederlassung Der Wirtgen Mineral Technologies GmbH
- Tube module and tube assembly including same28 Oct 2025US 12,455,116 B2LG Energy Solution, Ltd.
- Manufacturing apparatus and manufacturing method of positive electrode active material6 Aug 2026US 2026/0225910 A1Semiconductor Energy Laboratory Co.Ltd.
- Method and system for pyrolytic recycling of mobile phone circuit boards18 Jun 2026US 2026/0166604 A1Guangzhou Aifengpai Environmental Protection Technology Co., Ltd.
- Device for haremless treatment of phosphogypsum by calcination using high-temperature ceramsite29 Jan 2026US 2026/0029199 A1Hubei Juhai Environmental Technology Co., Ltd.
- System and method for triglyceride manufacture8 Jan 2026US 2026/0009583 A1Savor Foods Limited
- Rotary sintering furnace20 Nov 2025US 2025/0354756 A1Guangzhou Tinci Materials Technology Co., Ltd.
Most cited
By later US patents
- System and method for oxidant injection in rotary kilns72US 6,116,896 AAir Liquide America Corporation · 2000
- Plant for the thermal treatment of material and operation process thereof64US 6,901,868 B2Sea Marconi Technologies di Wander Tumiatti S.A.S. · 2005
- Apparatus and method for separation, recovery, and recycling municipal solid waste and the like33US 5,190,226 A1993
- Apparatus and method for preparation for separation, recovery, and recycling of municipal solid waste and the like33US 5,361,994 A1994
- Rotary retort furnace27US 4,648,836 ACan-Eng Holdings, Ltd. · 1987