B01F 23/2312
Diffusers
Official title: {Diffusers}
B01F23/2312 (Diffusers) appears on 922 US grants and 829 published applications in this corpus.
Search patents in B01F- Granted patents
- 922
- Published applications
- 829
- Assignees
- 539
- Inventors
- 1,738
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 10 | 0 |
| 1978 | 5 | 0 |
| 1979 | 2 | 0 |
| 1980 | 8 | 0 |
| 1981 | 14 | 0 |
| 1982 | 4 | 0 |
| 1983 | 4 | 0 |
| 1984 | 8 | 0 |
| 1985 | 8 | 0 |
| 1986 | 9 | 0 |
| 1987 | 6 | 0 |
| 1988 | 9 | 0 |
| 1989 | 15 | 0 |
| 1990 | 23 | 0 |
| 1991 | 17 | 0 |
| 1992 | 18 | 0 |
| 1993 | 14 | 0 |
| 1994 | 13 | 0 |
| 1995 | 13 | 0 |
| 1996 | 8 | 0 |
| 1997 | 13 | 0 |
| 1998 | 17 | 0 |
| 1999 | 17 | 0 |
| 2000 | 23 | 0 |
| 2001 | 28 | 7 |
| 2002 | 21 | 21 |
| 2003 | 13 | 21 |
| 2004 | 12 | 16 |
| 2005 | 15 | 26 |
| 2006 | 17 | 19 |
| 2007 | 13 | 23 |
| 2008 | 15 | 20 |
| 2009 | 14 | 28 |
| 2010 | 16 | 26 |
| 2011 | 15 | 36 |
| 2012 | 24 | 31 |
| 2013 | 31 | 33 |
| 2014 | 25 | 36 |
| 2015 | 19 | 48 |
| 2016 | 37 | 45 |
| 2017 | 40 | 42 |
| 2018 | 32 | 37 |
| 2019 | 32 | 45 |
| 2020 | 45 | 59 |
| 2021 | 32 | 40 |
| 2022 | 29 | 37 |
| 2023 | 33 | 41 |
| 2024 | 25 | 31 |
| 2025 | 36 | 40 |
| 2026 | 16 | 21 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B01F 23/23126Characterised by the shape of the diffuser element567
- B01F 23/23123Consisting of rigid porous or perforated material387
- B01F 23/23124Consisting of flexible porous or perforated material292
- B01F 23/23121Having injection means249
- B01F 23/23125Characterised by the way in which they are assembled or mounted131
- B01F 23/23122Having elements opening under air pressure33
- B01F 23/23128Having specific properties or elements attached thereto19
Recent patents
- Apparatus and method for CO2 microbubble flooding15 Sep 2026US 12,734,490 B2Dalian University of Technology
- Liquid control apparatus and related methods18 Aug 2026US 12,709,877 B2Delta Faucet Company
- Resistivity adjustment device and resistivity adjustment method11 Aug 2026US 12,702,961 B2DIC Corporation
- Recycling system4 Aug 2026US 12,698,223 B2BYD Company Limited
- Single use flexible sparger19 May 2026US 12,629,641 B2EMD Millipore Corporation
- System and method for methane elimination in septic systems and method to create carbon credits or their equivalent1 Oct 2026US 2026/0296935 A1
- Material preparation systems and related devices and methods of preparing cementitious materials27 Aug 2026US 2026/0250209 A1Saudi Arabian Oil Company
- Device for transport and treatment of liquid20 Aug 2026US 2026/0241347 A1Searas AS
- Internal combustion engine13 Aug 2026US 2026/0235095 A1
- Generation of nano and pico bubbles with variable gas/liquid ratios for effective interface transport and particle separation6 Aug 2026US 2026/0225047 A1Prd Tech, Inc.
Most cited
By later US patents
- Low pressure, high efficiency carbonator and method132US 4,850,269 AAquatec GmbH · 1989
- Cyclic aeration system for submerged membrane modules132US 6,245,239 B1Zenon Environmental Inc. · 2001
- Apparatus for injecting gas into molten metal126US 4,973,433 AThe Carborundum Company · 1990
- Monolithic jet column reactor pump113US 5,863,314 AAlphatech, Inc. · 1999
- Method for fluxing molten metal111US 5,616,167 A1997