B01F 27/701
Comprising two or more shafts
Official title: comprising two or more shafts, e.g. in consecutive mixing chambers
B01F27/701 (Comprising two or more shafts) appears on 223 US grants and 165 published applications in this corpus.
Search patents in B01F- Granted patents
- 223
- Published applications
- 165
- Assignees
- 161
- Inventors
- 448
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 4 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 5 | 0 |
| 1982 | 0 | 0 |
| 1983 | 4 | 0 |
| 1984 | 3 | 0 |
| 1985 | 8 | 0 |
| 1986 | 0 | 0 |
| 1987 | 4 | 0 |
| 1988 | 6 | 0 |
| 1989 | 5 | 0 |
| 1990 | 5 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 7 | 0 |
| 1996 | 3 | 0 |
| 1997 | 5 | 0 |
| 1998 | 6 | 0 |
| 1999 | 6 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 1 |
| 2002 | 4 | 11 |
| 2003 | 11 | 2 |
| 2004 | 2 | 3 |
| 2005 | 2 | 15 |
| 2006 | 5 | 6 |
| 2007 | 2 | 3 |
| 2008 | 2 | 5 |
| 2009 | 3 | 4 |
| 2010 | 7 | 8 |
| 2011 | 4 | 11 |
| 2012 | 5 | 4 |
| 2013 | 5 | 5 |
| 2014 | 5 | 10 |
| 2015 | 9 | 10 |
| 2016 | 3 | 5 |
| 2017 | 9 | 12 |
| 2018 | 9 | 9 |
| 2019 | 5 | 10 |
| 2020 | 6 | 7 |
| 2021 | 4 | 6 |
| 2022 | 8 | 5 |
| 2023 | 3 | 4 |
| 2024 | 2 | 2 |
| 2025 | 4 | 4 |
| 2026 | 4 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B01F 27/702With intermeshing paddles134
- B01F 27/706With all the shafts in the same receptacle45
- B01F 27/703With stirrers rotating at different speeds31
- B01F 27/705With stirrers rotating in opposite directions about the same axis19
- B01F 27/704With stirrers facing each other, i.e. supported by opposite walls of the8
Recent patents
- Arrangement and method for mixing a paste at a waste disposal site30 Jun 2026US 12,668,539 B2Betolar Oy
- Double shaft paddle mixer and arrangement and methods for producing paste12 May 2026US 12,623,194 B2Metso Finland Oy
- Hybrid calcium oxide hydration and hydrated lime slurry preparation system14 Apr 2026US 12,599,882 B1
- Platinum catalyst recycling device with multiple filtration structures14 Apr 2026US 12,599,945 B2Yulin University
- Powder blender for a system for continuous processing of powder products3 Jun 2025US 12,318,743 B2Fette Compacting GmbH
- Mixing devices for selective catalytic reduction fluid generators28 May 2026US 2026/0145147 A1Changzhou University
- Methods for preparing elastomer composites with mixer ventilation16 Apr 2026US 2026/0103572 A1Cabot Corporation
- Mixer5 Mar 2026US 2026/0061377 A1Sintokogio, Ltd.
- Mixer for polymer processing and method of operating a mixer25 Dec 2025US 2025/0387950 A1
- Continuous Paste Mixer and Method of Use11 Dec 2025US 2025/0375745 A1Tbs Engineering Limited
Most cited
By later US patents
- System for homogeneously mixing plural incoming product streams of different composition84US 6,648,501 B2Wenger Manufacturing, Inc. · 2003
- Combined blending and pumping apparatus70US 6,616,320 B2Wenger Manufacturing, Inc. · 2003
- Preconditioning apparatus for extruder52US 4,752,139 AWenger Manufacturing, Inc. · 1988
- Mixing kneader with rotating shafts and kneading bars47US 5,407,266 AList AG · 1995
- Apparatus for mixing construction materials44US 4,281,934 A1981