B01J 20/3242
Layers with a functional group
Official title: {Layers with a functional group, e.g. an affinity material, a ligand, a reactant or a complexing group}
B01J20/3242 (Layers with a functional group) appears on 2,748 US grants and 2,930 published applications in this corpus.
Search patents in B01J- Granted patents
- 2,748
- Published applications
- 2,930
- Assignees
- 1,465
- Inventors
- 6,943
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 14 | 0 |
| 1977 | 13 | 0 |
| 1978 | 10 | 0 |
| 1979 | 13 | 0 |
| 1980 | 8 | 0 |
| 1981 | 13 | 0 |
| 1982 | 20 | 0 |
| 1983 | 23 | 0 |
| 1984 | 17 | 0 |
| 1985 | 23 | 0 |
| 1986 | 20 | 0 |
| 1987 | 35 | 0 |
| 1988 | 37 | 0 |
| 1989 | 47 | 0 |
| 1990 | 53 | 0 |
| 1991 | 46 | 0 |
| 1992 | 60 | 0 |
| 1993 | 39 | 0 |
| 1994 | 47 | 0 |
| 1995 | 32 | 0 |
| 1996 | 44 | 0 |
| 1997 | 66 | 0 |
| 1998 | 47 | 0 |
| 1999 | 59 | 0 |
| 2000 | 60 | 0 |
| 2001 | 47 | 19 |
| 2002 | 44 | 78 |
| 2003 | 53 | 83 |
| 2004 | 54 | 108 |
| 2005 | 44 | 102 |
| 2006 | 60 | 109 |
| 2007 | 57 | 104 |
| 2008 | 50 | 101 |
| 2009 | 49 | 104 |
| 2010 | 66 | 137 |
| 2011 | 51 | 108 |
| 2012 | 79 | 104 |
| 2013 | 92 | 123 |
| 2014 | 86 | 136 |
| 2015 | 86 | 128 |
| 2016 | 99 | 123 |
| 2017 | 89 | 129 |
| 2018 | 97 | 117 |
| 2019 | 87 | 128 |
| 2020 | 93 | 122 |
| 2021 | 100 | 141 |
| 2022 | 82 | 111 |
| 2023 | 97 | 121 |
| 2024 | 81 | 155 |
| 2025 | 95 | 146 |
| 2026 | 64 | 93 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Silica-based nanoparticles for PFAS remediation6 Oct 2026US 12,752,323 B2Regents of the University of Minnesota
- Deodorant composition and deodorant article29 Sep 2026US 12,746,528 B2Sagami Chemical Research Institute
- Materials including alkyl diamine-substituted aryl compounds, methods of making, and methods of separating CO215 Sep 2026US 12,734,481 B2Georgia Tech Research Corporation
- Preparation method for superabsorbent polymer8 Sep 2026US 12,728,402 B2LG Chem.Ltd.
- Polymeric sorbents for aldehydes and methods of making1 Sep 2026US 12,722,139 B23M Innovative Properties Company
- Modified Metal-Organic Framework (MOF) Compositions, Process of Making and Process of Use Thereof8 Oct 2026US 2026/0307047 A1NuMat Technologies, Inc.
- Synthesis of bio-based catecholic acid- and derivatives-functionalized adsorbents for recovery of metals and metalloids from acidic solutions8 Oct 2026US 2026/0307051 A1The Penn State Research Foundation
- Separation Matrix and a Method of Separating Antibodies1 Oct 2026US 2026/0295462 A1Cytiva BioProcess R&D AB
- Ethylene oxide abatement systems1 Oct 2026US 2026/0295520 A1Boston Scientific Scimed, Inc.
- Moisture absorption film layered product1 Oct 2026US 2026/0295559 A1Mazda Motor Corporation
Most cited
By later US patents
- Magnetic iron-dextran microspheres466US 4,452,773 ACanadian Patents and Development Limited · 1984
- Affinity matrices of modified polysaccharide supports427US 5,059,654 ACuno Incorporated · 1991
- Magnetic particles for use in separations333US 4,554,088 AAdvanced Magnetics, Inc. · 1985
- Preparation of trichloro-s-triazine activated supports for coupling ligands276US 4,229,537 ANew York University · 1980
- Magnetic particles for use in separations245US 4,672,040 AAdvanced Magnetics, Inc. · 1987