F27B 21/06
Endless-strand sintering machines
F27B21/06 (Endless-strand sintering machines) appears on 75 US grants and 50 published applications in this corpus.
Search patents in F27B- Granted patents
- 75
- Published applications
- 50
- Assignees
- 55
- Inventors
- 200
- Latest grant
- 2 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 4 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 2 |
| 2003 | 2 | 3 |
| 2004 | 5 | 4 |
| 2005 | 1 | 0 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 2 |
| 2009 | 0 | 1 |
| 2010 | 1 | 2 |
| 2011 | 2 | 3 |
| 2012 | 2 | 1 |
| 2013 | 2 | 4 |
| 2014 | 1 | 4 |
| 2015 | 4 | 5 |
| 2016 | 1 | 1 |
| 2017 | 5 | 2 |
| 2018 | 1 | 4 |
| 2019 | 3 | 1 |
| 2020 | 1 | 2 |
| 2021 | 0 | 2 |
| 2022 | 0 | 2 |
| 2023 | 1 | 2 |
| 2024 | 2 | 0 |
| 2025 | 3 | 1 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Stepwise gas distribution and graded oxygen supplementation device for distribution of high-ratio circulating flue gas2 Dec 2025US 12,487,032 B1Institute of Process Engineering, Chinese Academy of Sciences
- Travelling grate condition monitoring18 Nov 2025US 12,475,550 B2Paul Wurth S. A.
- Sealing system for a machine for thermal treatment of bulk material8 Apr 2025US 12,270,607 B2Metso USA Inc.
- Sealing system for a machine for thermal treatment of bulk material27 Aug 2024US 12,071,676 B2Metso USA Inc.
- Induration machine30 Jul 2024US 12,050,058 B2Paul Wurth Deutschland GmbH
- Sintering furnace11 Jun 2026US 2026/0160495 A1Illinois Tool Works Inc.
- Improved sintering or induration belt for sinter or pellet plants15 Jan 2026US 2026/0016229 A1Paul Wurth S. A.
- Arrangement for Heating a Process Gas of an Iron Ore Pelletizing Plant13 Feb 2025US 2025/0052497 A1HYBRIT Development AB
- Biomass Direct Reduced Iron16 Nov 2023US 2023/0366051 A1Technological Resources Pty. Limited
- Sealing system for a machine for thermal treatment of bulk material19 Oct 2023US 2023/0332834 A1Metso Outotec USA Inc.
Most cited
By later US patents
- Heated proofing cabinet17US 6,847,013 B2AG Equipment Company · 2005
- Method of sintering and apparatus for carrying out the method12US 4,168,951 ALuossavaara-Kiirunavaara Aktiebolag · 1979
- Apparatus for delivering a stream of green pellets11US 4,457,840 AVoest-Alpine Aktiengesellschaft · 1984
- Combustion system10US 3,947,001 ADravo Corporation · 1976
- Vibrating conveyor for delivering a stream of green pellets of even thickness10US 4,465,592 AVoest-Alpine Aktiengesellschaft · 1984