C04B 20/008
Micro- or nanosized fillers
Official title: {Micro- or nanosized fillers, e.g. micronised fillers with particle size smaller than that of the hydraulic binder (colloidal silica C04B14/062 ; silica fume C04B18/146)}
C04B20/008 (Micro- or nanosized fillers) appears on 83 US grants and 87 published applications in this corpus.
Search patents in C04B- Granted patents
- 83
- Published applications
- 87
- Assignees
- 73
- Inventors
- 230
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 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 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 2 |
| 2003 | 2 | 3 |
| 2004 | 2 | 3 |
| 2005 | 3 | 4 |
| 2006 | 0 | 0 |
| 2007 | 3 | 3 |
| 2008 | 3 | 4 |
| 2009 | 1 | 1 |
| 2010 | 4 | 2 |
| 2011 | 2 | 0 |
| 2012 | 0 | 3 |
| 2013 | 1 | 2 |
| 2014 | 0 | 4 |
| 2015 | 7 | 1 |
| 2016 | 3 | 1 |
| 2017 | 2 | 2 |
| 2018 | 3 | 7 |
| 2019 | 1 | 10 |
| 2020 | 10 | 7 |
| 2021 | 5 | 8 |
| 2022 | 3 | 3 |
| 2023 | 3 | 1 |
| 2024 | 3 | 5 |
| 2025 | 2 | 6 |
| 2026 | 5 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Electrically-conductive asphalt concrete containing carbon fibers26 May 2026US 12,637,392 B2Iowa State University Research Foundation, Inc.
- Self-healing cement5 May 2026US 12,617,999 B2
- Geopolymer-based sub-ambient daytime radiative cooling coating24 Mar 2026US 12,584,057 B2The Hong Kong Polytechnic University
- Marking trafficked pavement substrates using a dry polymer modified cement3 Feb 2026US 12,540,104 B2
- Secondary aluminum ash for concrete and treatment method thereof6 Jan 2026US 12,515,988 B2Guangdong Zhidao Advanced Civil Engineering Materials Technology Research Co., Ltd.
- Electrically-conductive asphalt concrete containing carbon fibers3 Sep 2026US 2026/0257970 A1Iowa State University Research Foundation, Inc.
- Method of upgrading industrial furnace by-product27 Aug 2026US 2026/0250196 A1Magsort Oy
- Self-healing cement5 Mar 2026US 2026/0062602 A1Baker Hughes Oilfield Operations LLC
- Carbonized product-containing granules and method for producing them, and use19 Feb 2026US 2026/0049028 A1Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.
- A mechanochemically carbonated clay, methods of its production and uses thereof19 Feb 2026US 2026/0049030 A1Carbon Upcycling Technologies Inc.
Most cited
By later US patents
- Well treatment composition and methods utilizing nano-particles149US 7,559,369 B2Halliubrton Energy Services, Inc. · 2009
- Cementing compositions and the application of such compositions to cementing oil or analogous wells119US 6,312,515 B1Schlumberger Technology Corporation · 2001
- Contained micro-particles for use in well bore operations107US 7,156,174 B2Halliburton Energy Services.Inc. · 2007
- Cementitious shotcrete composition104US 6,565,647 B1Shieldcrete Ltd. · 2003
- Cellular concrete95US 5,183,505 AConcrete Technology Corporation · 1993