F27B 9/22
On rails
Official title: {on rails, e.g.} under the action of scrapers or pushers (F27B9/26 takes precedence)
F27B9/22 (On rails) appears on 66 US grants and 21 published applications in this corpus.
Search patents in F27B- Granted patents
- 66
- Published applications
- 21
- Assignees
- 60
- Inventors
- 118
- Latest grant
- 23 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 5 | 0 |
| 1985 | 2 | 0 |
| 1986 | 9 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 1 |
| 2005 | 0 | 1 |
| 2006 | 2 | 0 |
| 2007 | 0 | 2 |
| 2008 | 0 | 2 |
| 2009 | 1 | 1 |
| 2010 | 3 | 0 |
| 2011 | 1 | 0 |
| 2012 | 2 | 4 |
| 2013 | 1 | 2 |
| 2014 | 0 | 2 |
| 2015 | 1 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 1 | 1 |
| 2019 | 0 | 1 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Threading apparatus23 Dec 2025US 12,504,231 B2Contemporary Amperex Technology (Hong Kong) Limited
- Induction heating line billet pushout system and method with jointed push rod assembly29 Mar 2022US 11,287,189 B2Clinton Machine, Inc.
- Sample heating device21 Jul 2020US 10,718,568 B2Shimadzu Corporation
- Industrial heat treating furnace that uses a protective gas13 Feb 2018US 9,890,999 B2Ipsen, Inc.
- Device and method for transversely moving tubular material inside a furnace8 Sep 2015US 9,127,887 B2Tubos De Acero De Mexico, S.A.
- Apparatus for firing cathode material of secondary battery18 Jun 2026US 2026/0171467 A1Posco Future M Co., Ltd.
- Heat treatment furnace and sliding unit26 Sep 2024US 2024/0318913 A1NGK Adrec Co., Ltd.
- Threading apparatus31 Aug 2023US 2023/0272976 A1Contemporary Amperex Technology Co., Limited
- Induction heating line billet pushout system and method with jointed push rod assembly17 Oct 2019US 2019/0316845 A1Clinton Machine, Inc.
- Sample heating device19 Jul 2018US 2018/0202718 A1Shimadzu Corporation
Most cited
By later US patents
- Thermal treating apparatus and process40US 5,997,286 AFord Motor Company · 1999
- Fiber pipe protection for water cooled pipes in reheat furnaces19US 4,450,872 AThe Babcock & Wilcox Company · 1984
- Fiber pipe protection for water cooled pipes in reheat furnaces10US 4,539,055 AThe Babcock & Wilcox Company · 1985
- Heat treatment furnace9US 7,090,488 B2Dowa Mining Co., Ltd. · 2006
- Pusher furnace with soak zone lifter8US 4,427,371 ALoftus Furnace Company · 1984