B01F 2025/91
Direction of flow or arrangement of feed and discharge openings
Official title: {Direction of flow or arrangement of feed and discharge openings}
B01F2025/91 (Direction of flow or arrangement of feed and discharge openings) appears on 717 US grants and 539 published applications in this corpus.
Search patents in B01F- Granted patents
- 717
- Published applications
- 539
- Assignees
- 501
- Inventors
- 1,519
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 9 | 0 |
| 1978 | 10 | 0 |
| 1979 | 7 | 0 |
| 1980 | 6 | 0 |
| 1981 | 7 | 0 |
| 1982 | 4 | 0 |
| 1983 | 9 | 0 |
| 1984 | 11 | 0 |
| 1985 | 9 | 0 |
| 1986 | 10 | 0 |
| 1987 | 5 | 0 |
| 1988 | 7 | 0 |
| 1989 | 13 | 0 |
| 1990 | 15 | 0 |
| 1991 | 12 | 0 |
| 1992 | 6 | 0 |
| 1993 | 5 | 0 |
| 1994 | 13 | 0 |
| 1995 | 12 | 0 |
| 1996 | 15 | 0 |
| 1997 | 16 | 0 |
| 1998 | 19 | 0 |
| 1999 | 26 | 0 |
| 2000 | 30 | 0 |
| 2001 | 33 | 14 |
| 2002 | 21 | 26 |
| 2003 | 24 | 26 |
| 2004 | 13 | 21 |
| 2005 | 15 | 19 |
| 2006 | 14 | 14 |
| 2007 | 10 | 22 |
| 2008 | 7 | 14 |
| 2009 | 9 | 13 |
| 2010 | 13 | 25 |
| 2011 | 10 | 13 |
| 2012 | 8 | 13 |
| 2013 | 9 | 16 |
| 2014 | 19 | 22 |
| 2015 | 11 | 20 |
| 2016 | 16 | 18 |
| 2017 | 16 | 25 |
| 2018 | 18 | 20 |
| 2019 | 30 | 30 |
| 2020 | 27 | 23 |
| 2021 | 12 | 23 |
| 2022 | 30 | 35 |
| 2023 | 25 | 31 |
| 2024 | 15 | 20 |
| 2025 | 21 | 16 |
| 2026 | 13 | 20 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B01F 2025/913Vortex flow, i.e. flow spiraling in a tangential direction and moving inIndexing code177
- B01F 2025/912Radial flowIndexing code124
- B01F 2025/919Characterised by the disposition of the feed and discharge openingsIndexing code101
- B01F 2025/916Turbulent flow, i.e. every point of the flow moves in a randomIndexing code75
- B01F 2025/918Counter current flow, i.e. flows moving in opposite direction and collidingIndexing code74
- B01F 2025/911Axial flowIndexing code70
- B01F 2025/915Reverse flow, i.e. flow changing substantially 180° in directionIndexing code68
- B01F 2025/914Tangential flow, i.e. flow spiraling in a tangential direction in a flatIndexing code57
All 9 subgroupsShow fewer
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By later US patents
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