F27D 3/04
Ram or pusher apparatus
F27D3/04 (Ram or pusher apparatus) appears on 93 US grants and 43 published applications in this corpus.
Search patents in F27D- Granted patents
- 93
- Published applications
- 43
- Assignees
- 78
- Inventors
- 180
- Latest grant
- 3 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 5 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 5 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 4 | 0 |
| 1999 | 2 | 0 |
| 2000 | 7 | 0 |
| 2001 | 3 | 1 |
| 2002 | 6 | 1 |
| 2003 | 1 | 2 |
| 2004 | 1 | 1 |
| 2005 | 3 | 3 |
| 2006 | 1 | 0 |
| 2007 | 1 | 2 |
| 2008 | 0 | 1 |
| 2009 | 3 | 3 |
| 2010 | 1 | 1 |
| 2011 | 1 | 2 |
| 2012 | 2 | 7 |
| 2013 | 3 | 1 |
| 2014 | 1 | 1 |
| 2015 | 2 | 0 |
| 2016 | 0 | 4 |
| 2017 | 3 | 1 |
| 2018 | 3 | 4 |
| 2019 | 2 | 2 |
| 2020 | 0 | 0 |
| 2021 | 2 | 0 |
| 2022 | 2 | 0 |
| 2023 | 1 | 1 |
| 2024 | 1 | 2 |
| 2025 | 0 | 1 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method of producing molten iron using electric furnace including video device3 Mar 2026US 12,566,029 B2Jfe Steel Corporation
- Automatic charging apparatus for a furnace30 Apr 2024US 11,971,218 B1Zhejiang Hailiang Co., Ltd.
- Melter feeding system14 Nov 2023US 11,814,311 B2
- Method and facility for carbonitriding one or more steel parts under low pressure and at a high temperature29 Nov 2022US 11,512,381 B2ECM Technologies
- Induction heating line billet pushout system and method with jointed push rod assembly29 Mar 2022US 11,287,189 B2Clinton Machine, Inc.
- System for heating billets of non-ferrous materials2 Jul 2026US 2026/0185776 A1Presezzi Extrusion S.P.A.
- Telescoping Ram and Methods for Its Use in Transferring Solid Material21 May 2026US 2026/0139904 A1Gti Energy
- Method of producing molten iron2 Jan 2025US 2025/0003684 A1Jfe Steel Corporation
- Method of producing molten iron using electric furnace including video device14 Mar 2024US 2024/0085110 A1Jfe Steel Corporation
- Furnace and method for operating a furnace1 Feb 2024US 2024/0034663 A1
Most cited
By later US patents
- Method and apparatus for fabrication of cobalt alloy composite inserts211US 6,063,333 ADennis Tool Company · 2000
- Method and apparatus for fabrication of cobalt alloy composite inserts83US 6,500,226 B1Dennis Tool Company · 2002
- Method for fabrication and sintering composite inserts75US 5,848,348 A1998
- Method and apparatus for fabrication and sintering composite inserts39US 6,011,248 A2000
- Device for charging combustible solids to rotary kilns29US 5,078,594 AAsh Grove Cement Company · 1992