F27D 3/00
Charging
Official title: Charging; Discharging; Manipulation of charge
F27D3/00 (Charging) appears on 2,657 US grants and 1,794 published applications in this corpus.
Search patents in F27D- Granted patents
- 2,657
- Published applications
- 1,794
- Assignees
- 1,420
- Inventors
- 5,479
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 45 | 0 |
| 1977 | 42 | 0 |
| 1978 | 33 | 0 |
| 1979 | 26 | 0 |
| 1980 | 38 | 0 |
| 1981 | 45 | 0 |
| 1982 | 37 | 0 |
| 1983 | 59 | 0 |
| 1984 | 52 | 0 |
| 1985 | 51 | 0 |
| 1986 | 59 | 0 |
| 1987 | 57 | 0 |
| 1988 | 50 | 0 |
| 1989 | 50 | 0 |
| 1990 | 37 | 0 |
| 1991 | 53 | 0 |
| 1992 | 37 | 0 |
| 1993 | 45 | 0 |
| 1994 | 58 | 0 |
| 1995 | 62 | 0 |
| 1996 | 43 | 0 |
| 1997 | 57 | 0 |
| 1998 | 58 | 0 |
| 1999 | 80 | 0 |
| 2000 | 71 | 0 |
| 2001 | 60 | 26 |
| 2002 | 70 | 63 |
| 2003 | 69 | 64 |
| 2004 | 57 | 59 |
| 2005 | 29 | 36 |
| 2006 | 18 | 51 |
| 2007 | 22 | 65 |
| 2008 | 26 | 59 |
| 2009 | 44 | 49 |
| 2010 | 48 | 48 |
| 2011 | 49 | 81 |
| 2012 | 47 | 80 |
| 2013 | 40 | 64 |
| 2014 | 54 | 89 |
| 2015 | 81 | 99 |
| 2016 | 60 | 134 |
| 2017 | 75 | 82 |
| 2018 | 89 | 97 |
| 2019 | 89 | 64 |
| 2020 | 67 | 78 |
| 2021 | 51 | 72 |
| 2022 | 59 | 80 |
| 2023 | 60 | 79 |
| 2024 | 70 | 69 |
| 2025 | 52 | 52 |
| 2026 | 26 | 54 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F27D 2003/0034Means for moving, conveying, transporting the charge in the furnace or inIndexing code451
- F27D 3/16Introducing a fluid jet or current into the charge399
- F27D 3/14Charging or discharging liquid or molten material390
- F27D 3/15Tapping equipment388
- F27D 3/0025Charging or loading melting furnaces with material in the solid state291
- F27D 3/12Travelling or movable supports or containers for the charge253
- F27D 3/02Skids or tracks for heavy objects248
- F27D 3/0033Charging of particulate material209
All 18 subgroupsShow fewer
- F27D 3/18Charging particulate material using a fluid carrier184
- F27D 3/10Charging directly from hoppers or shoots183
- F27D 2003/0001Positioning the chargeIndexing code149
- F27D 3/0024Charging: of metallic workpieces131
- F27D 3/08Screw feeders100
- F27D 2003/0085Movement of the container or support of the charge in the furnaceIndexing code95
- F27D 3/04Ram or pusher apparatus93
- F27D 3/0084Charging66
- F27D 3/06Charging or discharging machines on travelling carriages63
- F27D 3/0021Charging: of ceramic ware44
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