B01F 23/2373
For obtaining fine bubbles, i.e. bubbles with a size below 100 µm
Official title: for obtaining fine bubbles, i.e. bubbles with a size below 100 µm
B01F23/2373 (For obtaining fine bubbles, i.e. bubbles with a size below 100 µm) appears on 267 US grants and 366 published applications in this corpus.
Search patents in B01F- Granted patents
- 267
- Published applications
- 366
- Assignees
- 215
- Inventors
- 624
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 4 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 5 | 0 |
| 2000 | 6 | 0 |
| 2001 | 17 | 7 |
| 2002 | 7 | 6 |
| 2003 | 4 | 3 |
| 2004 | 3 | 3 |
| 2005 | 3 | 5 |
| 2006 | 5 | 5 |
| 2007 | 3 | 8 |
| 2008 | 6 | 6 |
| 2009 | 3 | 9 |
| 2010 | 5 | 7 |
| 2011 | 2 | 2 |
| 2012 | 8 | 6 |
| 2013 | 3 | 4 |
| 2014 | 5 | 9 |
| 2015 | 3 | 8 |
| 2016 | 8 | 6 |
| 2017 | 3 | 10 |
| 2018 | 3 | 15 |
| 2019 | 7 | 22 |
| 2020 | 14 | 33 |
| 2021 | 21 | 41 |
| 2022 | 19 | 34 |
| 2023 | 22 | 31 |
| 2024 | 28 | 33 |
| 2025 | 11 | 30 |
| 2026 | 14 | 23 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Fine bubble generator, water heater, and dishwasher22 Sep 2026US 12,741,252 B2Rinnai Corporation
- Apparatus and method for CO2 microbubble flooding15 Sep 2026US 12,734,490 B2Dalian University of Technology
- Bubble liquid generating nozzle21 Jul 2026US 12,686,018 B2Science Incorporated
- Swirling-type microbubble generation device14 Jul 2026US 12,678,747 B2Nanoplanet Research Institute Ltd.
- Nanobubble generation device30 Jun 2026US 12,667,817 B1
- Cartridge for Housing a Production of a Therapeutic Microfoam, Automated Device, Method for Producing a Therapeutic Microfoam, and Microfoam24 Sep 2026US 2026/0283952 A1
- Method for producing a compound and apparatus for producing a compound27 Aug 2026US 2026/0250131 A1Helander Holding Oy
- Novel nanobubble generator for hydroponic, aquaponic, open-field agriculture, and/or cellular agriculture systems20 Aug 2026US 2026/0241348 A1Nanu Water Technology, Inc.
- Liquid treatment device including oxygen and nitrogen nanobubble generators and related methods13 Aug 2026US 2026/0233175 A1O2 Technologies, LLC
- Internal combustion engine13 Aug 2026US 2026/0235095 A1
Most cited
By later US patents
- Method of generating gas bubbles in oleaginous liquids105US 6,649,571 B1Masi Technologies, L.L.C. · 2003
- Modular shipboard membrane bioreactor system for combined wastewater streams98US 5,254,253 AZenon Environmental Inc. · 1993
- Process and apparatus for separating fine particles by microbubble flotation together with a process and apparatus for generation of microbubbles82US 4,981,582 AVirginia Tech Intellectual Properties, Inc. · 1991
- Device and method for generating micro bubbles in a liquid using hydrodynamic cavitation81US 7,338,551 B2Five Star Technologies, Inc. · 2008
- Gaseous injector for mixing apparatus76US 4,674,888 AKomax Systems, Inc. · 1987