B01F 23/23123
Consisting of rigid porous or perforated material
Official title: {consisting of rigid porous or perforated material}
B01F23/23123 (Consisting of rigid porous or perforated material) appears on 387 US grants and 315 published applications in this corpus.
Search patents in B01F- Granted patents
- 387
- Published applications
- 315
- Assignees
- 239
- Inventors
- 736
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 7 | 0 |
| 1978 | 5 | 0 |
| 1979 | 1 | 0 |
| 1980 | 5 | 0 |
| 1981 | 8 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 4 | 0 |
| 1985 | 3 | 0 |
| 1986 | 5 | 0 |
| 1987 | 4 | 0 |
| 1988 | 1 | 0 |
| 1989 | 5 | 0 |
| 1990 | 8 | 0 |
| 1991 | 8 | 0 |
| 1992 | 12 | 0 |
| 1993 | 7 | 0 |
| 1994 | 6 | 0 |
| 1995 | 6 | 0 |
| 1996 | 4 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 11 | 0 |
| 2000 | 11 | 0 |
| 2001 | 17 | 4 |
| 2002 | 10 | 10 |
| 2003 | 4 | 9 |
| 2004 | 5 | 2 |
| 2005 | 7 | 10 |
| 2006 | 8 | 9 |
| 2007 | 2 | 9 |
| 2008 | 7 | 7 |
| 2009 | 9 | 10 |
| 2010 | 8 | 11 |
| 2011 | 5 | 13 |
| 2012 | 8 | 14 |
| 2013 | 13 | 14 |
| 2014 | 12 | 12 |
| 2015 | 7 | 19 |
| 2016 | 14 | 20 |
| 2017 | 17 | 13 |
| 2018 | 10 | 12 |
| 2019 | 12 | 23 |
| 2020 | 14 | 26 |
| 2021 | 22 | 9 |
| 2022 | 13 | 11 |
| 2023 | 7 | 13 |
| 2024 | 7 | 9 |
| 2025 | 11 | 15 |
| 2026 | 5 | 11 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Apparatus and method for CO2 microbubble flooding15 Sep 2026US 12,734,490 B2Dalian University of Technology
- Impeller and sparger assemblies for a bioprocessing system31 Mar 2026US 12,589,366 B2Global Life Sciences Solutions USA LLC
- Sparger assemblies for a bioprocessing system3 Mar 2026US 12,565,634 B2Global Life Sciences Solutions USA LLC
- Selectable media filter and sparger assemblies and related methods of fabrication and use20 Jan 2026US 12,528,252 B2Mott Corporation
- Tube diffuser and associated saddle6 Jan 2026US 12,515,970 B2Ssi Aeration, Inc.
- Material preparation systems and related devices and methods of preparing cementitious materials27 Aug 2026US 2026/0250209 A1Saudi Arabian Oil Company
- 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.
- Impeller and Sparger Assemblies for a Bioprocessing System23 Jul 2026US 2026/0208127 A1Global Life Sciences Solutions USA LLC
- Gas capture surfaces for enhanced absorption and/or reaction and related systems and methods25 Jun 2026US 2026/0175181 A1Massachusetts Institute of Technology
Most cited
By later US patents
- Apparatus for injecting gas into molten metal126US 4,973,433 AThe Carborundum Company · 1990
- Membrane separator assembly and method of cleaning the assembly utilizing gas diffuser underneath the assembly110US 6,280,626 B1Mitshubishi Rayon Engineering Co., Ltd. · 2001
- 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
- Submersible aeration train and aeration apparatus for biological purification of sewage82US 5,316,671 A1994