C04B 18/0472
Waste material contaminated by heavy metals
Official title: {Waste material contaminated by heavy metals}
C04B18/0472 (Waste material contaminated by heavy metals) appears on 20 US grants and 13 published applications in this corpus.
Search patents in C04B- Granted patents
- 20
- Published applications
- 13
- Assignees
- 18
- Inventors
- 59
- Latest grant
- 11 Feb 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 3 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 2 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 2 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 2 | 1 |
| 2020 | 1 | 0 |
| 2021 | 0 | 2 |
| 2022 | 0 | 1 |
| 2023 | 1 | 0 |
| 2024 | 1 | 3 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Method for preparing non-sintered shell-wrapped ceramsite using solid waste meanwhile immobilizing heavy metal in river sediment, and non-sintered river-sediment-based ceramsite11 Feb 2025US 12,221,379 B2Shenzhen University
- Method for recycling residual paint colorant from empty paint colorant containers and products made therefrom2 Apr 2024US 11,945,750 B1
- Drill cuttings with a drying agent6 Jun 2023US 11,667,568 B1D-Trace Investments, LLC
- Method for treating polluted soil by a hydraulic binder with mayenite phase18 Feb 2020US 10,562,083 B2Holcim Technology Ltd
- Drill cuttings with a drying agent12 Nov 2019US 10,472,280 B1D-Trace Investments, LLC
- Method For Preparing Non-Sintered Shell-Wrapped Ceramsite Using Solid Waste Meanwhile Immobilizing Heavy Metal In River Sediment, And Non-Sintered River-Sediment-Based Ceramsite17 Oct 2024US 2024/0343645 A1Shenzhen University
- Alkaline activated cement methods and compositions20 Jun 2024US 2024/0199487 A1Material. Evolution Ltd.
- Nano-amended cementitious materials for waste stabilization15 Feb 2024US 2024/0051871 A1Battelle Savannah River Alliance, LLC
- Eco-efficient method for manufacturing concrete31 Mar 2022US 2022/0098098 A1Ariel Scientific Innovations Ltd.
- Mortar or concrete material containing metallic mineral extraction residues and method for producing same9 Sep 2021US 2021/0276918 A1Universidad De Murcia
Most cited
By later US patents
- Method for reduction of heavy metal leaching from hazardous waste under acidic and nonacidic conditions72US 5,037,479 ARMT, Inc. · 1991
- Leach-resistant solid bodies from fly ash and heavy metal sludge57US 4,226,630 AAmax Resource Recovery Systems, Inc. · 1980
- Process for treating a sludge or drainage containing chromium (VI) compounds with a solidifying agent25US 4,132,558 AOnoda Cement Co., Ltd. · 1979
- Method for treating wastes17US 5,810,920 AKanegafuchi Kagaku Kogyo Kabushiki Kaisha · 1998
- Fixation and stabilization of metals in contaminated soils and materials12US 6,139,485 ASevenson Environmental Services, Inc. · 2000