B01F 27/1132
With guiding tubes or tubular segments fixed to and surrounding the tips
Official title: with guiding tubes or tubular segments fixed to and surrounding the tips of the propeller blades, e.g. for supplementary mixing
B01F27/1132 (With guiding tubes or tubular segments fixed to and surrounding the tips) appears on 38 US grants and 41 published applications in this corpus.
Search patents in B01F- Granted patents
- 38
- Published applications
- 41
- Assignees
- 23
- Inventors
- 69
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 1 | 2 |
| 2006 | 0 | 2 |
| 2007 | 0 | 4 |
| 2008 | 4 | 5 |
| 2009 | 2 | 2 |
| 2010 | 2 | 1 |
| 2011 | 2 | 0 |
| 2012 | 2 | 2 |
| 2013 | 1 | 1 |
| 2014 | 1 | 0 |
| 2015 | 0 | 1 |
| 2016 | 2 | 2 |
| 2017 | 2 | 4 |
| 2018 | 0 | 0 |
| 2019 | 3 | 2 |
| 2020 | 1 | 3 |
| 2021 | 0 | 3 |
| 2022 | 0 | 1 |
| 2023 | 3 | 1 |
| 2024 | 1 | 3 |
| 2025 | 3 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Bioreactors28 Apr 2026US 12,612,587 B2
- Impeller assembly and mixing apparatus8 Jul 2025US 12,350,632 B2Shangshui Smartech Ltd.
- Impeller assembly and mixing apparatus10 Jun 2025US 12,325,009 B2Shangshui Smartech Ltd.
- Impeller guard25 Feb 2025US 12,233,386 B2Cytiva US LLC
- Frothing device9 Jan 2024US 11,864,687 B2
- Fluid mixing systems and methods28 Aug 2025US 2025/0269337 A1Life Technologies Corporation
- Impeller assembly and battery slurry mixing and stirring equipment having same22 Aug 2024US 2024/0278199 A1Contemporary Amperex Technology Co., Limited
- Impeller assembly and mixing apparatus13 Jun 2024US 2024/0189786 A1Shangshui Smartech Ltd.
- Bioreactors7 Mar 2024US 2024/0076598 A1
- Impeller guard6 Apr 2023US 2023/0106503 A1Cytiva US LLC
Most cited
By later US patents
- Apparatus for immersing solids into fluids and moving fluids in a linear direction131US 4,930,986 AThe Carborundum Company · 1990
- Mixing apparatus74US 4,722,608 AGeneral Signal Corporation · 1988
- Stirring blade unit26US 5,326,168 ASatake Chemikal Equipment Mfg., Ltd. · 1994
- Mixing apparatus and method20US 6,964,511 B2The Maitland Company · 2005
- Erosion resistant mixing impeller17US 5,344,235 AGeneral Signal Corporation · 1994