B01F 25/431
Straight mixing tubes with baffles or obstructions that do not cause substantial
Official title: Straight mixing tubes with baffles or obstructions that do not cause substantial pressure drop; Baffles therefor
B01F25/431 (Straight mixing tubes with baffles or obstructions that do not cause substantial) appears on 1,302 US grants and 1,393 published applications in this corpus.
Search patents in B01F- Granted patents
- 1,302
- Published applications
- 1,393
- Assignees
- 846
- Inventors
- 3,128
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 9 | 0 |
| 1978 | 11 | 0 |
| 1979 | 7 | 0 |
| 1980 | 12 | 0 |
| 1981 | 9 | 0 |
| 1982 | 5 | 0 |
| 1983 | 9 | 0 |
| 1984 | 6 | 0 |
| 1985 | 13 | 0 |
| 1986 | 6 | 0 |
| 1987 | 5 | 0 |
| 1988 | 15 | 0 |
| 1989 | 10 | 0 |
| 1990 | 9 | 0 |
| 1991 | 10 | 0 |
| 1992 | 18 | 0 |
| 1993 | 13 | 0 |
| 1994 | 11 | 0 |
| 1995 | 20 | 0 |
| 1996 | 20 | 0 |
| 1997 | 16 | 0 |
| 1998 | 15 | 0 |
| 1999 | 33 | 0 |
| 2000 | 27 | 0 |
| 2001 | 17 | 7 |
| 2002 | 16 | 22 |
| 2003 | 21 | 30 |
| 2004 | 21 | 40 |
| 2005 | 16 | 38 |
| 2006 | 13 | 39 |
| 2007 | 15 | 39 |
| 2008 | 24 | 54 |
| 2009 | 27 | 60 |
| 2010 | 30 | 59 |
| 2011 | 27 | 59 |
| 2012 | 29 | 45 |
| 2013 | 43 | 51 |
| 2014 | 50 | 60 |
| 2015 | 50 | 78 |
| 2016 | 63 | 80 |
| 2017 | 61 | 83 |
| 2018 | 47 | 63 |
| 2019 | 70 | 64 |
| 2020 | 63 | 78 |
| 2021 | 51 | 63 |
| 2022 | 53 | 62 |
| 2023 | 49 | 59 |
| 2024 | 37 | 51 |
| 2025 | 69 | 61 |
| 2026 | 25 | 48 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B01F 25/43197Characterised by the mounting of the baffles or obstructions490
- B01F 25/4314With helical baffles434
- B01F 25/4316The baffles being flat pieces of material404
- B01F 25/4315The baffles being deformed flat pieces of material257
- B01F 25/4317Profiled elements161
- B01F 25/4319Tubular elements54
- B01F 25/43195Wires or coils47
- B01F 25/4311The baffles being adjustable40
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Most cited
By later US patents
- Capillary flow device951US 4,963,498 ABiotrack, Inc. · 1990
- Capillary flow device522US 4,756,884 ABiotrack, Inc. · 1988
- Remote power recharge for electronic equipment421US 7,068,991 B22006
- Static mixing device351US 4,538,920 AMinnesota Mining and Manufacturing Company · 1985
- Process for recovery of hydrocarbons and rejection of sand350US 5,316,664 ACanadian Occidental Petroleum Ltd. · 1994