B01J 2220/50
Aspects relating to the use of sorbent or filter aid materials
B01J2220/50 (Aspects relating to the use of sorbent or filter aid materials) appears on 2,335 US grants and 2,327 published applications in this corpus.
Search patents in B01J- Granted patents
- 2,335
- Published applications
- 2,327
- Assignees
- 1,234
- Inventors
- 5,563
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 17 | 0 |
| 1977 | 19 | 0 |
| 1978 | 11 | 0 |
| 1979 | 15 | 0 |
| 1980 | 20 | 0 |
| 1981 | 21 | 0 |
| 1982 | 17 | 0 |
| 1983 | 21 | 0 |
| 1984 | 19 | 0 |
| 1985 | 19 | 0 |
| 1986 | 13 | 0 |
| 1987 | 30 | 0 |
| 1988 | 30 | 0 |
| 1989 | 27 | 0 |
| 1990 | 28 | 0 |
| 1991 | 31 | 0 |
| 1992 | 57 | 0 |
| 1993 | 30 | 0 |
| 1994 | 40 | 0 |
| 1995 | 31 | 0 |
| 1996 | 44 | 0 |
| 1997 | 57 | 0 |
| 1998 | 47 | 0 |
| 1999 | 49 | 0 |
| 2000 | 45 | 0 |
| 2001 | 40 | 17 |
| 2002 | 38 | 77 |
| 2003 | 54 | 80 |
| 2004 | 52 | 93 |
| 2005 | 40 | 108 |
| 2006 | 52 | 116 |
| 2007 | 53 | 82 |
| 2008 | 45 | 90 |
| 2009 | 50 | 99 |
| 2010 | 61 | 118 |
| 2011 | 65 | 106 |
| 2012 | 73 | 99 |
| 2013 | 79 | 76 |
| 2014 | 68 | 77 |
| 2015 | 63 | 84 |
| 2016 | 59 | 64 |
| 2017 | 53 | 68 |
| 2018 | 61 | 84 |
| 2019 | 57 | 108 |
| 2020 | 79 | 105 |
| 2021 | 70 | 120 |
| 2022 | 65 | 140 |
| 2023 | 92 | 103 |
| 2024 | 71 | 97 |
| 2025 | 95 | 73 |
| 2026 | 62 | 43 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B01J 2220/54Sorbents specially adapted for analytical or investigative chromatographyIndexing code1,013
- B01J 2220/58Use in a single columnIndexing code665
- B01J 2220/68SuperabsorbentsIndexing code331
- B01J 2220/56Use in the form of a bedIndexing code296
- B01J 2220/52Sorbents specially adapted for preparative chromatographyIndexing code177
- B01J 2220/62In a cartridgeIndexing code175
- B01J 2220/66Other type of housings or containers not covered by b01j2220/58 - b01j2220/64Indexing code136
- B01J 2220/64In a syringe, pipetteIndexing code128
All 9 subgroupsShow fewer
Recent patents
- Preparation method of superabsorbent polymer6 Oct 2026US 12,752,255 B2LG Chem.Ltd.
- Continuous polymerization reactor for super absorbent polymer and continuous polymerization reaction system6 Oct 2026US 12,753,249 B2LG Chem.Ltd.
- Channeled fibers in separation of biologically active nanoparticles22 Sep 2026US 12,741,234 B2Clemson University Research Foundation
- Preparation method for superabsorbent polymer8 Sep 2026US 12,728,402 B2LG Chem.Ltd.
- Chelator based eluents for solid phase extraction of phosphorylated compounds8 Sep 2026US 12,730,040 B2Waters Technologies Corporation
- Separation Matrix and a Method of Separating Antibodies1 Oct 2026US 2026/0295462 A1Cytiva BioProcess R&D AB
- Immunoglobulin-binding protein1 Oct 2026US 2026/0297140 A1Tosoh Corporation
- Composite absorbent material17 Sep 2026US 2026/0272729 A1The Procter & Gamble Company
- Chromatography medium and process17 Sep 2026US 2026/0273508 A1Cytiva BioProcess R&D AB
- Porous monolithic polymer for separation and purification of biological particles, method for production of porous monolithic polymer for separation and purification of biological particles, and method for separation and purification of biological particles composed of phospholipids using porous monolithic polymer for separation and purification of biological particles10 Sep 2026US 2026/0264047 A1Glory Industry Co., Ltd.
Most cited
By later US patents
- Magnetic particles for use in separations333US 4,554,088 AAdvanced Magnetics, Inc. · 1985
- Plasma concentrate apparatus and method289US 6,905,612 B2Hanuman LLC · 2005
- Process for removing mercury from a gas or a liquid by absorption on a copper sulfide containing solid mass253US 4,094,777 AInstitut Francais du Petrole · 1978
- Imprint-coating synthesis of selective functionalized ordered mesoporous sorbents for separation and sensors251US 6,251,280 B1The University of Tennessee Research Corporation · 2001
- Magnetic particles for use in separations245US 4,672,040 AAdvanced Magnetics, Inc. · 1987