C04B 2103/20
Retarders
C04B2103/20 (Retarders) appears on 298 US grants and 334 published applications in this corpus.
Search patents in C04B- Granted patents
- 298
- Published applications
- 334
- Assignees
- 180
- Inventors
- 843
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 4 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 4 | 0 |
| 1991 | 4 | 0 |
| 1992 | 0 | 0 |
| 1993 | 5 | 0 |
| 1994 | 4 | 0 |
| 1995 | 3 | 0 |
| 1996 | 4 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 5 | 0 |
| 2002 | 3 | 4 |
| 2003 | 3 | 1 |
| 2004 | 3 | 2 |
| 2005 | 1 | 2 |
| 2006 | 2 | 7 |
| 2007 | 4 | 2 |
| 2008 | 2 | 8 |
| 2009 | 2 | 2 |
| 2010 | 7 | 6 |
| 2011 | 5 | 8 |
| 2012 | 4 | 6 |
| 2013 | 6 | 13 |
| 2014 | 7 | 8 |
| 2015 | 4 | 3 |
| 2016 | 8 | 9 |
| 2017 | 16 | 31 |
| 2018 | 18 | 27 |
| 2019 | 9 | 28 |
| 2020 | 24 | 18 |
| 2021 | 19 | 22 |
| 2022 | 19 | 23 |
| 2023 | 21 | 24 |
| 2024 | 12 | 29 |
| 2025 | 23 | 35 |
| 2026 | 19 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Dry cementitious material mixture for 3D-printing25 Aug 2026US 12,715,813 B2Holcim Technology Ltd
- Flexible composite25 Aug 2026US 12,716,020 B2Concrete Canvas Technology Ltd.
- Use of a naphthalenesulfonic acid polycondensate as a plasticizer in a construction composition and construction composition4 Aug 2026US 12,698,235 B2Construction Research & Technology GmbH
- Wide range retarder that improves early compressive strength development21 Jul 2026US 12,686,806 B2Halliburton Energy Services.Inc.
- Preparation of graphene nanosheets-based concrete additive14 Jul 2026US 12,679,780 B2Nanospan India Private Limited
- Composition and treatment method thereof for 3d pringting material8 Oct 2026US 2026/0308063 A1Nano and Advanced Materials Institute Limited
- Method and Device for Reinforcing Recycled Aggregate10 Sep 2026US 2026/0265138 A1Research Institute of Highway Ministry of Transport
- Production of low carbon hydraulic cement and concrete10 Sep 2026US 2026/0265142 A1
- Geopolymer cementing composition3 Sep 2026US 2026/0258293 A1King Fahd University of Petroleum and Minerals
- Quick-setting magnesium based cement and concrete27 Aug 2026US 2026/0250191 A1ZS2 Technologies Ltd.
Most cited
By later US patents
- Set retarded cement compositions and methods for well cementing134US 5,049,288 AHalliburton Company · 1991
- Cementitious composition130US 4,494,990 AAsh Grove Cement Company · 1985
- Extended settable compositions comprising cement kiln dust and associated methods128US 7,478,675 B2Halliburton Energy Services.Inc. · 2009
- Cementitious compositions containing fly ash89US 5,536,310 ASandoz Ltd. · 1996
- Extended settable compositions comprising cement kiln dust and associated methods89US 7,674,332 B2Halliburton Energy Services.Inc. · 2010