B01F 23/231244
Dissolving, hollow fiber membranes
Official title: {Dissolving, hollow fiber membranes}
B01F23/231244 (Dissolving, hollow fiber membranes) appears on 84 US grants and 110 published applications in this corpus.
Search patents in B01F- Granted patents
- 84
- Published applications
- 110
- Assignees
- 69
- Inventors
- 212
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 5 |
| 2004 | 1 | 4 |
| 2005 | 4 | 9 |
| 2006 | 5 | 4 |
| 2007 | 4 | 9 |
| 2008 | 6 | 4 |
| 2009 | 3 | 8 |
| 2010 | 4 | 1 |
| 2011 | 1 | 8 |
| 2012 | 5 | 4 |
| 2013 | 2 | 1 |
| 2014 | 4 | 2 |
| 2015 | 0 | 2 |
| 2016 | 4 | 5 |
| 2017 | 0 | 3 |
| 2018 | 1 | 6 |
| 2019 | 2 | 4 |
| 2020 | 5 | 3 |
| 2021 | 1 | 5 |
| 2022 | 2 | 4 |
| 2023 | 10 | 4 |
| 2024 | 3 | 2 |
| 2025 | 2 | 4 |
| 2026 | 3 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Resistivity adjustment device and resistivity adjustment method11 Aug 2026US 12,702,961 B2DIC Corporation
- Process for water treatment using immersed gas transfer membranes17 Mar 2026US 12,577,137 B2Bl Technologies, Inc.
- Tube diffuser and associated saddle6 Jan 2026US 12,515,970 B2Ssi Aeration, Inc.
- Modular devices and systems for infusing gas into a liquid and methods of manufacture and use thereof5 Aug 2025US 12,377,389 B2BioTherm Hydronic, Inc.
- Integral gas-introduction and stirring unit for gas-liquid reactors3 Jun 2025US 12,319,900 B2Rheinisch-Westfälische Technische Hochschule (RWTH) Aachen
- System and method for methane elimination in septic systems and method to create carbon credits or their equivalent1 Oct 2026US 2026/0296935 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.
- Floating apparatus for membrane biofilm reactor and process for water treatment25 Jun 2026US 2026/0176180 A1Bl Technologies, Inc.
- Gas Infusion Apparatus and Method of Making28 May 2026US 2026/0145143 A1
- Stable Carbonic Acid and Method of Making28 May 2026US 2026/0145144 A1
Most cited
By later US patents
- Diffuser mounting arrangement for waste water aeration systems77US 4,960,546 A1990
- Control of dissolved gases in liquids73US 5,565,149 APermea, Inc. · 1996
- Artificial lung and method of using it63US 5,192,320 ADainippon Ink and Chemicals, Inc. · 1993
- Diaphragm for gas-liquid contact, gas-liquid contact apparatus and process for producing liquid containing gas dissolved therein58US 5,254,143 ADainippon Ink and Chemical, Inc. · 1993
- Hollow fiber carbonation45US 6,712,342 B2Lancer Partnership, Ltd. · 2004