B01J 20/12
Naturally occurring clays or bleaching earth
B01J20/12 (Naturally occurring clays or bleaching earth) appears on 693 US grants and 782 published applications in this corpus.
Search patents in B01J- Granted patents
- 693
- Published applications
- 782
- Assignees
- 497
- Inventors
- 1,765
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 4 | 0 |
| 1982 | 4 | 0 |
| 1983 | 5 | 0 |
| 1984 | 6 | 0 |
| 1985 | 5 | 0 |
| 1986 | 0 | 0 |
| 1987 | 7 | 0 |
| 1988 | 6 | 0 |
| 1989 | 6 | 0 |
| 1990 | 8 | 0 |
| 1991 | 8 | 0 |
| 1992 | 16 | 0 |
| 1993 | 18 | 0 |
| 1994 | 20 | 0 |
| 1995 | 19 | 0 |
| 1996 | 8 | 0 |
| 1997 | 2 | 0 |
| 1998 | 10 | 0 |
| 1999 | 8 | 0 |
| 2000 | 9 | 0 |
| 2001 | 7 | 6 |
| 2002 | 10 | 10 |
| 2003 | 12 | 17 |
| 2004 | 12 | 13 |
| 2005 | 10 | 17 |
| 2006 | 6 | 20 |
| 2007 | 8 | 20 |
| 2008 | 10 | 29 |
| 2009 | 13 | 30 |
| 2010 | 11 | 34 |
| 2011 | 20 | 27 |
| 2012 | 26 | 32 |
| 2013 | 23 | 28 |
| 2014 | 20 | 34 |
| 2015 | 22 | 42 |
| 2016 | 30 | 34 |
| 2017 | 22 | 41 |
| 2018 | 23 | 44 |
| 2019 | 32 | 51 |
| 2020 | 34 | 52 |
| 2021 | 38 | 42 |
| 2022 | 34 | 37 |
| 2023 | 27 | 35 |
| 2024 | 28 | 31 |
| 2025 | 29 | 32 |
| 2026 | 8 | 24 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Porous biochar for improving severe pollution and preparation method therefor4 Aug 2026US 12,698,225 B2Chinese Research Academy of Environmental Sciences
- Absorbent compositions, methods of forming the same, and animal litter prepared with such compositions7 Jul 2026US 12,673,310 B2U.S. Silica Company
- Thermally activated bleaching clay product for oil bleaching16 Jun 2026US 12,654,148 B2Active Minerals International, LLC
- Method and device for separation and recovery of heavy metal ions by membrane-forming mineralization fixation5 May 2026US 12,617,697 B2Qingdao OE Tiancheng Environmental Engineering Co., Ltd.
- Biogenic activated carbon and methods of making and using same28 Apr 2026US 12,611,649 B2Carbon Technology Holdings, LLC
- Photothermal polymeric aerogels for wastewater detoxification and water recycling8 Oct 2026US 2026/0308020 A1University of Kentucky Research Foundation
- Constant gas-phase organic compound concentration generation apparatus and pretreatment method thereof1 Oct 2026US 2026/0295499 A1Shenzhen University
- Montmorillonite desiccant and preparation method thereof17 Sep 2026US 2026/0273504 A1Foshan Shunde Topcod Industry Co., Ltd.
- Biochars, biochar extracts and biochar extracts having soluble signaling compounds and method for capturing material extracted from biochar10 Sep 2026US 2026/0262683 A1Talipot Cool Extract (IP), LLC
- Pet Litter Containing Tableted Clay3 Sep 2026US 2026/0257195 A1Boxiecat LLC
Most cited
By later US patents
- Composition of synthetic porous crystalline material, its synthesis183US 5,102,643 AMobil Oil Corporation · 1992
- System and method for sequestration and separation of mercury in combustion exhaust gas aqueous scrubber systems182US 7,722,843 B12010
- Synthetic mesoporous crystaline material177US 5,098,684 AMobil Oil Corporation · 1992
- Method for synthesizing mesoporous crystalline material158US 5,057,296 AMobil Oil Corporation · 1991
- Pillared interlayered clay materials useful as catalysts and sorbents135US 4,176,090 AW. R. Grace & Co. · 1979