C01B 33/38
Layered base-exchange silicates
Official title: Layered base-exchange silicates, e.g. clays, micas or alkali metal silicates of kenyaite or magadiite type {(activation of naturally occurring clays B01J20/12; pillared layered base-exchange silicates B01J29/049)}
C01B33/38 (Layered base-exchange silicates) appears on 511 US grants and 354 published applications in this corpus.
Search patents in C01B- Granted patents
- 511
- Published applications
- 354
- Assignees
- 301
- Inventors
- 1,221
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 15 | 0 |
| 1977 | 9 | 0 |
| 1978 | 9 | 0 |
| 1979 | 3 | 0 |
| 1980 | 5 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 5 | 0 |
| 1984 | 10 | 0 |
| 1985 | 2 | 0 |
| 1986 | 9 | 0 |
| 1987 | 12 | 0 |
| 1988 | 14 | 0 |
| 1989 | 9 | 0 |
| 1990 | 6 | 0 |
| 1991 | 9 | 0 |
| 1992 | 13 | 0 |
| 1993 | 15 | 0 |
| 1994 | 15 | 0 |
| 1995 | 13 | 0 |
| 1996 | 15 | 0 |
| 1997 | 11 | 0 |
| 1998 | 28 | 0 |
| 1999 | 11 | 0 |
| 2000 | 21 | 0 |
| 2001 | 13 | 4 |
| 2002 | 14 | 8 |
| 2003 | 11 | 11 |
| 2004 | 11 | 20 |
| 2005 | 7 | 15 |
| 2006 | 12 | 19 |
| 2007 | 5 | 18 |
| 2008 | 10 | 11 |
| 2009 | 8 | 22 |
| 2010 | 9 | 27 |
| 2011 | 14 | 17 |
| 2012 | 12 | 18 |
| 2013 | 9 | 8 |
| 2014 | 10 | 15 |
| 2015 | 9 | 6 |
| 2016 | 5 | 9 |
| 2017 | 8 | 7 |
| 2018 | 9 | 13 |
| 2019 | 4 | 19 |
| 2020 | 9 | 12 |
| 2021 | 13 | 18 |
| 2022 | 8 | 14 |
| 2023 | 7 | 13 |
| 2024 | 17 | 14 |
| 2025 | 8 | 11 |
| 2026 | 6 | 5 |
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.
- Sheet, sealing material, fuel battery, electrolysis cell, method for producing sheet, and method for producing sealing material12 Feb 2026US 2026/0045524 A1Nichias Corporation
Most cited
By later US patents
- Synthetic layered MCM-56, its synthesis and use228US 5,362,697 AMobil Oil Corporation · 1994
- Composite material containing a layered silicate205US 4,889,885 AKabushiki Kaisha Toyota Chuo Kenkyusho · 1989
- Intercalates and exfoliates formed with oligomers and polymers and composite materials containing same162US 5,552,469 AAMCOL International Corporation · 1996
- Intercalates; exfoliates; process for manufacturing intercalates and exfoliates and composite materials containing same116US 5,578,672 AAMCOL International Corporation · 1996
- Organophilic clay complexes, their preparation and compositions comprising said complexes92US 4,412,018 ANL Industries, Inc. · 1983