C01B 33/40
Clays
C01B33/40 (Clays) appears on 159 US grants and 151 published applications in this corpus.
Search patents in C01B- Granted patents
- 159
- Published applications
- 151
- Assignees
- 136
- Inventors
- 486
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 6 | 0 |
| 1978 | 6 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 5 | 0 |
| 2001 | 3 | 3 |
| 2002 | 2 | 0 |
| 2003 | 4 | 4 |
| 2004 | 1 | 4 |
| 2005 | 1 | 3 |
| 2006 | 3 | 3 |
| 2007 | 0 | 3 |
| 2008 | 1 | 2 |
| 2009 | 2 | 3 |
| 2010 | 3 | 11 |
| 2011 | 3 | 5 |
| 2012 | 5 | 9 |
| 2013 | 4 | 2 |
| 2014 | 4 | 9 |
| 2015 | 4 | 1 |
| 2016 | 1 | 4 |
| 2017 | 2 | 6 |
| 2018 | 5 | 6 |
| 2019 | 2 | 13 |
| 2020 | 6 | 6 |
| 2021 | 6 | 13 |
| 2022 | 5 | 11 |
| 2023 | 4 | 11 |
| 2024 | 10 | 7 |
| 2025 | 6 | 8 |
| 2026 | 6 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Multifunctional fluorescent polymer-clay composite tracers22 Sep 2026US 12,742,381 B2Saudi Arabian Oil Company
- Hydrated ionic clay and tobacco material compositions28 Apr 2026US 12,612,312 B2JUUL Labs, Inc.
- Anti-vibration material21 Apr 2026US 12,606,448 B2Honda Motor Co., Ltd.
- Sheet silicate lamellae with a high aspect ratio14 Apr 2026US 12,600,640 B2BYK-Chemie GmbH
- Long-term retardant and fire-suppressing gel compositions3 Mar 2026US 12,564,749 B2Perimeter Solutions LP
- Montmorillonite desiccant and preparation method thereof17 Sep 2026US 2026/0273504 A1Foshan Shunde Topcod Industry Co., Ltd.
- Clay nanoparticles for medical use30 Jul 2026US 2026/0216338 A1Renovos Biologics Limited
- Method for concentrating pathogens or nucleic acid using acid activated bentonite14 May 2026US 2026/0132441 A1Industry-Academic Cooperation Foundation, Yonsei University
- Composition and process for pelletizing carbon-based materials for proppant and industrial applications30 Apr 2026US 2026/0115677 A1Carbo Ceramics Inc.
- Product for mine tailings6 Nov 2025US 2025/0339794 A1Active Minerals International, LLC
Most cited
By later US patents
- Mixed metal layered hydroxide-clay adducts as thickeners for water and other hydrophylic fluids87US 4,664,843 AThe Dow Chemical Company · 1987
- Layered silicates of limited swelling power, a process for their production and their use in detergents and cleaning preparations52US 4,737,306 AKenkel Kommanditgesellschaft auf Aktien · 1988
- Mass production of nano-scaled platelets and products52US 7,785,492 B1Nanotek Instruments, Inc. · 2010
- Stable aluminosilicate aquasols having uniform size particles and their preparation50US 4,217,240 AE. I. Du Pont de Nemours and Company · 1980
- Mixed metal hydroxide-clay adducts as thickeners for water and other hydrophylic fluids50US 4,790,954 AThe Dow Chemical Company · 1988