C04B 20/023
Chemical treatment
Official title: {Chemical treatment}
C04B20/023 (Chemical treatment) appears on 143 US grants and 264 published applications in this corpus.
Search patents in C04B- Granted patents
- 143
- Published applications
- 264
- Assignees
- 187
- Inventors
- 713
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 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 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 1 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 3 |
| 2008 | 1 | 2 |
| 2009 | 0 | 0 |
| 2010 | 3 | 4 |
| 2011 | 3 | 8 |
| 2012 | 2 | 6 |
| 2013 | 6 | 5 |
| 2014 | 6 | 3 |
| 2015 | 2 | 5 |
| 2016 | 1 | 5 |
| 2017 | 6 | 8 |
| 2018 | 6 | 9 |
| 2019 | 6 | 9 |
| 2020 | 9 | 14 |
| 2021 | 12 | 15 |
| 2022 | 11 | 15 |
| 2023 | 12 | 30 |
| 2024 | 10 | 48 |
| 2025 | 17 | 43 |
| 2026 | 15 | 29 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for preparing high-performance compressed desert sand concrete29 Sep 2026US 12,747,188 B2Jinan University
- Crystalline cellulose reinforced cement8 Sep 2026US 12,729,158 B2
- Preparation device and method for asphalt concrete containing modified acid aggregates8 Sep 2026US 12,729,160 B2Xi'an University of Technology
- Graphene oxide fine aggregate in cement composites7 Jul 2026US 12,673,894 B2Washington State University
- In-situ high-strength gradient carbonized material and preparation method thereof28 Apr 2026US 12,612,332 B2Wuhan University of Technology
- Concrete recycling8 Oct 2026US 2026/0308059 A1
- Composition and treatment method thereof for 3d pringting material8 Oct 2026US 2026/0308063 A1Nano and Advanced Materials Institute Limited
- Recycled Concrete Aggregates Carbonation Treatment1 Oct 2026US 2026/0296967 A1Hawkins Construction Company
- Optimization of color in the mechanochemical activation of clays1 Oct 2026US 2026/0296970 A1
- Methods for repurposing plastic for use in the building industry24 Sep 2026US 2026/0285753 A1Low Carbon Materials Limited
Most cited
By later US patents
- CO2-sequestering formed building materials109US 8,006,446 B2Calera Corporation · 2011
- Nanostructured moulded bodies and layers and method for producing same103US 6,291,070 B1Institut für Neue Materialien gemeinnützige GmbH · 2001
- CO2-sequestering formed building materials101US 7,771,684 B2Calera Corporation · 2010
- Methods and systems for utilizing waste sources of metal oxides97US 7,754,169 B2Calera Corporation · 2010
- Solidification of water based muds78US 5,673,753 AShell Oil Company · 1997