F27B 9/18
Under the action of scrapers or pushers
Official title: under the action of scrapers or pushers
F27B9/18 (Under the action of scrapers or pushers) appears on 61 US grants and 21 published applications in this corpus.
Search patents in F27B- Granted patents
- 61
- Published applications
- 21
- Assignees
- 38
- Inventors
- 106
- Latest grant
- 6 Apr 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 5 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 5 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 0 |
| 2003 | 1 | 1 |
| 2004 | 2 | 4 |
| 2005 | 1 | 0 |
| 2006 | 1 | 0 |
| 2007 | 0 | 2 |
| 2008 | 0 | 2 |
| 2009 | 0 | 1 |
| 2010 | 3 | 1 |
| 2011 | 3 | 1 |
| 2012 | 0 | 1 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 1 | 1 |
| 2016 | 0 | 2 |
| 2017 | 1 | 1 |
| 2018 | 0 | 1 |
| 2019 | 1 | 1 |
| 2020 | 2 | 0 |
| 2021 | 2 | 0 |
| 2022 | 0 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Roasting furnace, use thereof and method for the processing of ores or concentrates6 Apr 2021US 10,969,174 B2Sadaci NV
- Molecular pyrodisaggregator26 Jan 2021US 10,899,967 B2
- Modular furnace1 Dec 2020US 10,852,063 B2Img-Na, LLC
- Multiple hearth furnace improvements21 Jul 2020US 10,718,567 B2Synergetics Pty. Ltd.
- Conveyance device for heat treatment device and heat treatment device16 Apr 2019US 10,260,814 B2IHI Corporation
- Device and method for thermal or thermo-chemical treatment of material19 May 2022US 2022/0155013 A1
- Roasting furnace, use thereof and method for the processing of ores or concentrates16 May 2019US 2019/0145707 A1Sadaci NV
- Modular Furnace6 Dec 2018US 2018/0347904 A1Img-Na, LLC
- Conveyance device for heat treatment device and heat treatment device26 Jan 2017US 2017/0023304 A1IHI Corporation
- Multiple hearth furnace improvements8 Dec 2016US 2016/0356548 A1Synergetics Pty. Ltd.
Most cited
By later US patents
- Reducing hydrogen concentration in pecvd amorphous silicon carbide films26US 5,800,878 AAPPLIED Materials.Inc. · 1998
- System for controlling the operation of a multiple hearth furnace25US 3,958,920 AThe Rust Engineering Company · 1976
- Oven heating system20US 4,514,167 ASantrade Ltd. · 1985
- Apparatus and a process for heating a material14US 4,579,525 A1986
- Method of treating materials on a rotary hearth13US 3,998,703 ASalem Corporation · 1976