B01J 20/30
Processes for preparing, regenerating, or reactivating
B01J20/30 (Processes for preparing, regenerating, or reactivating) appears on 7,401 US grants and 9,140 published applications in this corpus.
Search patents in B01J- Granted patents
- 7,401
- Published applications
- 9,140
- Assignees
- 3,577
- Inventors
- 19,375
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 22 | 0 |
| 1977 | 25 | 0 |
| 1978 | 24 | 0 |
| 1979 | 24 | 0 |
| 1980 | 26 | 0 |
| 1981 | 26 | 0 |
| 1982 | 35 | 0 |
| 1983 | 34 | 0 |
| 1984 | 34 | 0 |
| 1985 | 40 | 0 |
| 1986 | 25 | 0 |
| 1987 | 49 | 0 |
| 1988 | 48 | 0 |
| 1989 | 56 | 0 |
| 1990 | 68 | 0 |
| 1991 | 71 | 0 |
| 1992 | 98 | 0 |
| 1993 | 68 | 0 |
| 1994 | 88 | 0 |
| 1995 | 66 | 0 |
| 1996 | 76 | 0 |
| 1997 | 95 | 0 |
| 1998 | 97 | 0 |
| 1999 | 110 | 0 |
| 2000 | 101 | 0 |
| 2001 | 98 | 34 |
| 2002 | 108 | 151 |
| 2003 | 116 | 196 |
| 2004 | 121 | 220 |
| 2005 | 94 | 221 |
| 2006 | 119 | 225 |
| 2007 | 113 | 209 |
| 2008 | 106 | 237 |
| 2009 | 104 | 244 |
| 2010 | 159 | 324 |
| 2011 | 145 | 274 |
| 2012 | 205 | 306 |
| 2013 | 239 | 382 |
| 2014 | 248 | 397 |
| 2015 | 271 | 426 |
| 2016 | 316 | 438 |
| 2017 | 308 | 463 |
| 2018 | 354 | 500 |
| 2019 | 349 | 492 |
| 2020 | 372 | 460 |
| 2021 | 348 | 479 |
| 2022 | 319 | 491 |
| 2023 | 336 | 510 |
| 2024 | 370 | 553 |
| 2025 | 434 | 531 |
| 2026 | 243 | 377 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B01J 20/32Impregnating or coating4,251
- B01J 20/3078Thermal treatment1,457
- B01J 20/34Regenerating or reactivating1,421
- B01J 20/3085Chemical treatments not covered by groups b01j20/3007 - b01j20/30781,332
- B01J 20/3007Moulding, shaping or extruding543
- B01J 20/305Addition of material, later completely removed477
- B01J 20/3021Milling, crushing or grinding454
- B01J 20/3042Use of binding agents443
Recent patents
- High throughput moving panel direct air capture system6 Oct 2026US 12,752,238 B2Zero Carbon Systems, Inc.
- M-xylene adsorbent and preparation method therefor6 Oct 2026US 12,752,253 B2China Petroleum & Chemical Corporation
- Microwave regeneration of carbon dioxide sorbents6 Oct 2026US 12,752,256 B2UT-Battelle, LLC
- Silica-based nanoparticles for PFAS remediation6 Oct 2026US 12,752,323 B2Regents of the University of Minnesota
- Adsorptive deodorizing materials, preparation methods, and air purification devices29 Sep 2026US 12,746,303 B2Guangdong Eraclean Technology Co., Ltd.
- Polysiloxane, method for its production and deodorant comprising it8 Oct 2026US 2026/0306689 A1Sagami Chemical Research Institute
- Processes for sorbent regeneration8 Oct 2026US 2026/0306995 A1Shell USA, Inc.
- Amine compound, amine composition, carbon dioxide absorbent, method for recovering carbon dioxide, and carbon dioxide separation and recovery device8 Oct 2026US 2026/0307005 A1Mitsubishi Gas Chemical Company, Inc.
- Layered Double Oxide and Preparation Method and Use Thereof8 Oct 2026US 2026/0307040 A1Quzhou Institute for Innovation in Resource Chemical Engineering
- Sorbent for lithium extraction from brines8 Oct 2026US 2026/0307042 A1International Battery Metals, Ltd.
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