F23B 1/20
Using step-type grate
Official title: {using step-type grate}
F23B1/20 (Using step-type grate) appears on 5 US grants and 0 published applications in this corpus.
Search patents in F23B- Granted patents
- 5
- Published applications
- 0
- Assignees
- 1
- Inventors
- 5
- Latest grant
- 14 Apr 1992
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Apparatus for the combustion and/or decomposition of fuel by heat, especially of solid fuels14 Apr 1992US 5,103,744 A
- Grate for a fuel boiler3 Dec 1991US 5,069,146 ATeset A.G.
- Furnace with oscillating grate14 Apr 1987US 4,656,956 A
- Furnace with oscillating grate8 Jul 1986US 4,598,651 A
- Burner for combusting particulate fuels3 Mar 1981US 4,253,407 A
No published applications in this class yet.
Most cited
By later US patents
- Furnace with oscillating grate12US 4,656,956 A1987
- Grate for a fuel boiler11US 5,069,146 ATeset A.G. · 1991
- Apparatus for the combustion and/or decomposition of fuel by heat, especially of solid fuels7US 5,103,744 A1992
- Burner for combusting particulate fuels6US 4,253,407 A1981
- Furnace with oscillating grate5US 4,598,651 A1986