B01J 20/3231
Characterised by the coating or impregnating layer
Official title: {characterised by the coating or impregnating layer}
B01J20/3231 (Characterised by the coating or impregnating layer) appears on 3,946 US grants and 4,473 published applications in this corpus.
Search patents in B01J- Granted patents
- 3,946
- Published applications
- 4,473
- Assignees
- 2,064
- Inventors
- 10,176
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 16 | 0 |
| 1977 | 16 | 0 |
| 1978 | 17 | 0 |
| 1979 | 19 | 0 |
| 1980 | 12 | 0 |
| 1981 | 18 | 0 |
| 1982 | 24 | 0 |
| 1983 | 25 | 0 |
| 1984 | 22 | 0 |
| 1985 | 27 | 0 |
| 1986 | 21 | 0 |
| 1987 | 39 | 0 |
| 1988 | 42 | 0 |
| 1989 | 49 | 0 |
| 1990 | 59 | 0 |
| 1991 | 54 | 0 |
| 1992 | 75 | 0 |
| 1993 | 50 | 0 |
| 1994 | 64 | 0 |
| 1995 | 43 | 0 |
| 1996 | 62 | 0 |
| 1997 | 76 | 0 |
| 1998 | 63 | 0 |
| 1999 | 70 | 0 |
| 2000 | 74 | 0 |
| 2001 | 67 | 25 |
| 2002 | 67 | 108 |
| 2003 | 76 | 133 |
| 2004 | 82 | 158 |
| 2005 | 62 | 151 |
| 2006 | 87 | 163 |
| 2007 | 79 | 142 |
| 2008 | 73 | 150 |
| 2009 | 74 | 150 |
| 2010 | 87 | 214 |
| 2011 | 86 | 169 |
| 2012 | 121 | 174 |
| 2013 | 138 | 192 |
| 2014 | 140 | 206 |
| 2015 | 139 | 188 |
| 2016 | 155 | 208 |
| 2017 | 142 | 205 |
| 2018 | 156 | 202 |
| 2019 | 141 | 185 |
| 2020 | 140 | 200 |
| 2021 | 143 | 215 |
| 2022 | 131 | 181 |
| 2023 | 144 | 192 |
| 2024 | 132 | 223 |
| 2025 | 154 | 206 |
| 2026 | 93 | 133 |
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
- Silicon-aluminum-iron composite material, and preparation method therefor and use thereof29 Sep 2026US 12,746,526 B2Guangdong Brunp Recycling Technology Co., Ltd.
- Deodorant composition and deodorant article29 Sep 2026US 12,746,528 B2Sagami Chemical Research Institute
- Cat litter containing a fluorescent cat attractant15 Sep 2026US 12,733,621 B2Boxiecat LLC
- Materials including alkyl diamine-substituted aryl compounds, methods of making, and methods of separating CO215 Sep 2026US 12,734,481 B2Georgia Tech Research Corporation
- Sorbent for lithium extraction from brines8 Oct 2026US 2026/0307042 A1International Battery Metals, Ltd.
- 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.
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
- 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