F23K 3/20
With moving hoppers
Official title: with moving hoppers
F23K3/20 (With moving hoppers) appears on 6 US grants and 2 published applications in this corpus.
Search patents in F23K- Granted patents
- 6
- Published applications
- 2
- Assignees
- 5
- Inventors
- 14
- Latest grant
- 13 Oct 2015
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 1 |
| 2015 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Multi-stage solids feeder system and method13 Oct 2015US 9,156,631 B2General Electric Company
- Feed regulator for thermostatic control17 Dec 2013US 8,607,719 B1
- Automatic coal stoker18 Nov 2003US 6,647,901 B2Keystoker, Inc.
- Vibrating grate in a heating boiler9 Sep 1986US 4,610,208 AKils el Ab
- Mechanism for granulometric distribution of solid particles23 Aug 1983US 4,399,846 APetroleo Brasileiro S.A. - Petrobras
Most cited
By later US patents
- Feed regulator for thermostatic control9US 8,607,719 B12013
- Solid fuel distributor4US 4,174,920 ADetroit Stoker Company · 1979
- Vibrating grate in a heating boiler4US 4,610,208 AKils el Ab · 1986
- Mechanism for granulometric distribution of solid particles3US 4,399,846 APetroleo Brasileiro S.A. - Petrobras · 1983
- Multi-stage solids feeder system and method3US 9,156,631 B2General Electric Company · 2015