F23H 3/00
Grates with hollow bars
F23H3/00 (Grates with hollow bars) appears on 68 US grants and 37 published applications in this corpus.
Search patents in F23H- Granted patents
- 68
- Published applications
- 37
- Assignees
- 41
- Inventors
- 118
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 4 | 0 |
| 1984 | 6 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 4 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 0 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 1 |
| 2002 | 3 | 1 |
| 2003 | 1 | 1 |
| 2004 | 0 | 1 |
| 2005 | 1 | 1 |
| 2006 | 0 | 2 |
| 2007 | 0 | 1 |
| 2008 | 0 | 2 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 5 |
| 2012 | 1 | 1 |
| 2013 | 2 | 4 |
| 2014 | 1 | 3 |
| 2015 | 1 | 2 |
| 2016 | 0 | 1 |
| 2017 | 1 | 2 |
| 2018 | 2 | 2 |
| 2019 | 1 | 1 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 2 |
| 2023 | 1 | 2 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Water-cooled grate block for an incinerator9 Jun 2026US 12,650,224 B2Kanadevia Inova AG
- Plate-formed grate element for a movable grate of a furnace31 Mar 2026US 12,590,700 B2Kanadevia Inova Denmark A/S
- Grate block for a combustion grate14 Jan 2025US 12,196,419 B2Hitachi Zosen Inova AG
- Grate bar for stepped grate14 Nov 2023US 11,815,265 B2IKN GmbH
- Combustion chamber15 Nov 2022US 11,499,717 B2Zhejiang Liju Boiler Co., Ltd.
- Plate-formed grate element for a movable grate of a furnace18 Apr 2024US 2024/0125471 A1Kanadevia Inova Denmark A/S
- Water-cooled grate block for an incinerator19 Oct 2023US 2023/0332769 A1Hitachi Zosen Inova AG
- Wood gas boiler15 Jun 2023US 2023/0184425 A1
- Grate block for a combustion grate18 Aug 2022US 2022/0260252 A1Hitachi Zosen Inova AG
- Grate Bar for Stepped Grate11 Aug 2022US 2022/0252261 A1IKN GmbH
Most cited
By later US patents
- Incinerator with two reburn stages, and, optionally, heat recovery23US 4,438,705 A1984
- High temperature fireplace grate including room heating transfer tubes22US 6,484,714 B12002
- Solid fuel combustor and method of burning20US 4,254,715 AHague International · 1981
- Grates20US 4,389,978 AParkinson Cowan GWB Limited · 1983
- Biomass-fueled furnace17US 4,559,882 A1985