B01F 27/80
Mixers with rotary stirring devices in fixed receptacles: with stirrers rotating about
Official title: with stirrers rotating about a substantially vertical axis
B01F27/80 (Mixers with rotary stirring devices in fixed receptacles: with stirrers rotating about) appears on 2,730 US grants and 2,720 published applications in this corpus.
Search patents in B01F- Granted patents
- 2,730
- Published applications
- 2,720
- Assignees
- 1,700
- Inventors
- 5,894
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 34 | 0 |
| 1977 | 23 | 0 |
| 1978 | 32 | 0 |
| 1979 | 29 | 0 |
| 1980 | 25 | 0 |
| 1981 | 25 | 0 |
| 1982 | 25 | 0 |
| 1983 | 26 | 0 |
| 1984 | 36 | 0 |
| 1985 | 32 | 0 |
| 1986 | 25 | 0 |
| 1987 | 33 | 0 |
| 1988 | 33 | 0 |
| 1989 | 35 | 0 |
| 1990 | 36 | 0 |
| 1991 | 32 | 0 |
| 1992 | 37 | 0 |
| 1993 | 34 | 0 |
| 1994 | 35 | 0 |
| 1995 | 44 | 0 |
| 1996 | 50 | 0 |
| 1997 | 55 | 0 |
| 1998 | 39 | 0 |
| 1999 | 38 | 0 |
| 2000 | 41 | 0 |
| 2001 | 51 | 22 |
| 2002 | 56 | 51 |
| 2003 | 43 | 77 |
| 2004 | 36 | 94 |
| 2005 | 48 | 75 |
| 2006 | 40 | 68 |
| 2007 | 40 | 71 |
| 2008 | 48 | 74 |
| 2009 | 25 | 71 |
| 2010 | 40 | 85 |
| 2011 | 44 | 87 |
| 2012 | 70 | 100 |
| 2013 | 63 | 113 |
| 2014 | 70 | 94 |
| 2015 | 76 | 137 |
| 2016 | 90 | 124 |
| 2017 | 100 | 130 |
| 2018 | 104 | 140 |
| 2019 | 124 | 139 |
| 2020 | 124 | 143 |
| 2021 | 87 | 168 |
| 2022 | 108 | 148 |
| 2023 | 99 | 140 |
| 2024 | 106 | 137 |
| 2025 | 127 | 139 |
| 2026 | 57 | 93 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B01F 27/90With paddles or arms496
- B01F 27/805Wherein the stirrers or the receptacles are moved in order to bring343
- B01F 27/808With stirrers driven from the bottom of the receptacle324
- B01F 27/88With a separate receptacle-stirrer unit that is adapted to be coupled to315
- B01F 27/91With propellers315
- B01F 27/92With helices or screws266
- B01F 27/81The stirrers having central axial inflow and substantially radial outflow263
- B01F 27/95With stirrers having planetary motion, i.e. rotating about their own axis and170
All 17 subgroupsShow fewer
- B01F 27/86Co-operating with deflectors or baffles fixed to the receptacle160
- B01F 27/85With two or more stirrers on separate shafts111
- B01F 27/93With rotary discs107
- B01F 27/96With openwork frames or cages103
- B01F 27/84With two or more stirrers rotating at different speeds or in opposite98
- B01F 27/82Pan-type mixers, i.e. mixers in which the stirring elements move along the64
- B01F 27/94With rotary cylinders or cones50
- B01F 27/87The receptacle being divided into superimposed compartments45
- B01F 27/83The stirrers being additionally moved radially, or oscillating about an axis perpendicular22
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Most cited
By later US patents
- Stirred-tank reactor system167US 7,384,783 B2Baxter Healthcare S. A. · 2008
- Device for releasing and diffusing bubbles into liquid140US 4,611,790 AShowa Aluminum Corporation · 1986
- Method for agitating metals and producing alloys140US 4,743,428 ACominco Ltd. · 1988
- Rotary blade-type apparatus for dissolving alloy elements and dispersing gas in an aluminum bath133US 4,802,656 AAluminium Pechiney · 1989
- Rotary device for treating molten metal131US 4,634,105 AFoseco International Limited · 1987