B01D 2201/087
Using gas bubbles
Official title: using gas bubbles, e.g. air
B01D2201/087 (Using gas bubbles) appears on 49 US grants and 60 published applications in this corpus.
Search patents in B01D- Granted patents
- 49
- Published applications
- 60
- Assignees
- 48
- Inventors
- 144
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 0 |
| 2005 | 1 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 2 |
| 2008 | 1 | 3 |
| 2009 | 1 | 3 |
| 2010 | 2 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 5 |
| 2013 | 0 | 3 |
| 2014 | 0 | 1 |
| 2015 | 2 | 3 |
| 2016 | 2 | 3 |
| 2017 | 4 | 4 |
| 2018 | 1 | 4 |
| 2019 | 2 | 3 |
| 2020 | 3 | 2 |
| 2021 | 5 | 3 |
| 2022 | 1 | 4 |
| 2023 | 1 | 2 |
| 2024 | 2 | 7 |
| 2025 | 5 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Batch-type apparatus for filtering17 Mar 2026US 12,576,351 B2Samsung Electronics Co., Ltd.
- Washing device and extraction system11 Nov 2025US 12,465,170 B2Izumi Food Machinery Co., Ltd.
- Apparatus and method for cleaning metal filter30 Sep 2025US 12,427,461 B2LG Chem.Ltd.
- Regenerative media filter air scouring apparatus and method17 Jun 2025US 12,330,959 B2Neptune-Benson, LLC
- Water sampling immersion probe29 Apr 2025US 12,287,316 B2Hach Lange GmbH
- Powdered adsorbent lossless recovery method based on belt filter10 Sep 2026US 2026/0263973 A1Zhejiang Yongzheng Lithium Technology Co., Ltd.
- Regenerative media filter air scouring apparatus and method25 Sep 2025US 2025/0296855 A1Neptune-Benson, LLC
- Media retention plate for a block underdrain system12 Jun 2025US 2025/0186908 A1De Nora Water Technologies, LLC
- Apparatus and Method for Cleaning Metal Filter31 Oct 2024US 2024/0359120 A1LG Chem.Ltd.
- Media retention plate for a block underdrain system10 Oct 2024US 2024/0335770 A1De Nora Water Technologies, LLC
Most cited
By later US patents
- Aeration method49US 7,361,274 B2Siemens Water Technologies Corp. · 2008
- In-situ cleanable filter with filtered cleanser42US 5,779,900 ANelson Industries, Inc. · 1998
- Apparatus for growing microorganisms29US 4,535,062 AChemap AG · 1985
- Air/water distributor underdrain29US 4,707,257 AThe Graver Company · 1987
- Apparatus for filter backwashing26US 4,191,652 AEnvirotech Corporation · 1980