B01D 2239/0291
Comprising swelling polymers
Official title: comprising swelling polymers
B01D2239/0291 (Comprising swelling polymers) appears on 15 US grants and 20 published applications in this corpus.
Search patents in B01D- Granted patents
- 15
- Published applications
- 20
- Assignees
- 18
- Inventors
- 52
- Latest grant
- 1 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 1 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 2 |
| 2008 | 0 | 0 |
| 2009 | 2 | 0 |
| 2010 | 0 | 2 |
| 2011 | 1 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 1 | 0 |
| 2021 | 0 | 4 |
| 2022 | 1 | 3 |
| 2023 | 2 | 0 |
| 2024 | 3 | 4 |
| 2025 | 2 | 0 |
| 2026 | 0 | 1 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Swellable devices based on renewable raw materials and methods of using in wellbores1 Jul 2025US 12,345,137 B2Baker Hughes Oilfield Operations LLC
- Filtration of fluids using conformable porous shape memory media11 Feb 2025US 12,221,863 B2Baker Hughes Oilfield Operations LLC
- Composite filtering medium and method for production thereof19 Nov 2024US 12,145,091 B2
- Virus-collecting filter for medical aspirator system2 Jul 2024US 12,023,430 B2GPF Co. Ltd.
- Filter and metal ion removing method4 Jun 2024US 11,998,864 B2Solventum Intellectual Properties Company
- Porous polymeric material and filtration device6 Aug 2026US 2026/0226815 A1Baker Hughes Oilfield Operations LLC
- Methods and devices for cell counting and analysis19 Dec 2024US 2024/0416345 A1Wainamics, Inc.
- Filter18 Jul 2024US 2024/0238709 A1Yamashin-Filter Corp.
- Composite filtering medium and method for production thereof4 Jul 2024US 2024/0216844 A1Saati S.P.A.
- Fibrous material22 Feb 2024US 2024/0060216 A1
Most cited
By later US patents
- Graded particle-size retention filter medium for fluid filtration unit with improved edge seal23US 6,939,466 B2Cuno Incorporated · 2005
- Graded particle-size retention filter medium for fluid filtration unit with improved edge seal20US 7,178,676 B23M Innovative Properties Company · 2007
- Cellulosic/polyamide composite14US 7,618,702 B2Cornell Research Foundation, Inc. · 2009
- Graded particle-size retention filter medium for fluid filtration unit with improved edge seal3US 7,582,209 B23M Innovative Properties Company · 2009
- Filter, metal ion removing method, and metal ion removing apparatus2US 11,400,399 B23M Innovative Properties Company · 2022