C01F 7/784
Layered double hydroxide
Official title: Layered double hydroxide, e.g. comprising nitrate, sulfate or carbonate ions as intercalating anions
C01F7/784 (Layered double hydroxide) appears on 203 US grants and 188 published applications in this corpus.
Search patents in C01F- Granted patents
- 203
- Published applications
- 188
- Assignees
- 130
- Inventors
- 531
- Latest grant
- 4 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 7 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 8 | 0 |
| 1996 | 7 | 0 |
| 1997 | 3 | 0 |
| 1998 | 9 | 0 |
| 1999 | 8 | 0 |
| 2000 | 2 | 0 |
| 2001 | 7 | 1 |
| 2002 | 8 | 5 |
| 2003 | 5 | 8 |
| 2004 | 6 | 6 |
| 2005 | 6 | 10 |
| 2006 | 5 | 3 |
| 2007 | 2 | 6 |
| 2008 | 4 | 13 |
| 2009 | 4 | 9 |
| 2010 | 7 | 13 |
| 2011 | 6 | 9 |
| 2012 | 10 | 6 |
| 2013 | 3 | 8 |
| 2014 | 4 | 5 |
| 2015 | 5 | 11 |
| 2016 | 4 | 8 |
| 2017 | 7 | 7 |
| 2018 | 6 | 8 |
| 2019 | 5 | 4 |
| 2020 | 4 | 9 |
| 2021 | 6 | 9 |
| 2022 | 3 | 8 |
| 2023 | 5 | 3 |
| 2024 | 2 | 6 |
| 2025 | 7 | 7 |
| 2026 | 0 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- [SN2S6]4- intercalated layer double hydroxide and method of producing the same4 Nov 2025US 12,459,831 B2Jackson State University
- Method for extracting and separating salt alkali from saline alkali soil and soil improvement5 Aug 2025US 12,377,452 B2Tarim University
- Layered double hydroxide electride and method for producing same29 Jul 2025US 12,371,336 B2Japan Science and Technology Agency
- Nitrogenous gas sustained releasing agent and nitrogenous gas sustained releaser composed of the same as well as nitrogenous gas sustained releasing method, respiratory equipment, package, and sustained releasing apparatus using the sustained releaser8 Apr 2025US 12,268,709 B2National Institute for Materials Science
- Separators with layered double hydroxides for electrochemical cells11 Mar 2025US 12,249,734 B2Phinergy Ltd.
- Synthesis of layered material from eggshell waste8 Oct 2026US 2026/0307041 A1Yildiz Teknik Universitesi
- Methods for preparing fly ash-based layered double hydroxides modified by molybdenum sulfide intercalation23 Jul 2026US 2026/0209060 A1Zhejiang University
- Method for producing ion-exchanged hydrotalcite11 Jun 2026US 2026/0159406 A1SETOLAS Holdings, Inc.
- Lactic acid removal device14 May 2026US 2026/0131308 A1Nikkiso Co., Ltd.
- Lactic acid removal device9 Apr 2026US 2026/0097384 A1Nikkiso Co., Ltd.
Most cited
By later US patents
- Layered double hydroxide sorbents for the removal of SO.sub.x from flue gas and other gas streams81US 5,114,898 ABoard of Trustees operating Michigan State University · 1992
- Polyoxometalate intercalated layered double hydroxides74US 5,079,203 ABoard of Trustees operating Michigan State University · 1992
- Pillared hydrotalcites68US 4,774,212 AAmoco Corporation · 1988
- Method of making crystalline 2-layer lithium aluminates in ion exchange resins56US 4,461,714 AThe Dow Chemical Company · 1984
- Hydrotalcite-like materials having a sheet-like morphology and process for production thereof55US 5,399,329 AAristech Chemical Corporation · 1995