C04B 28/04
Portland cements
C04B28/04 (Portland cements) appears on 2,095 US grants and 2,461 published applications in this corpus.
Search patents in C04B- Granted patents
- 2,095
- Published applications
- 2,461
- Assignees
- 1,050
- Inventors
- 4,915
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 15 | 0 |
| 1978 | 13 | 0 |
| 1979 | 7 | 0 |
| 1980 | 16 | 0 |
| 1981 | 11 | 0 |
| 1982 | 9 | 0 |
| 1983 | 18 | 0 |
| 1984 | 23 | 0 |
| 1985 | 17 | 0 |
| 1986 | 8 | 0 |
| 1987 | 13 | 0 |
| 1988 | 13 | 0 |
| 1989 | 13 | 0 |
| 1990 | 11 | 0 |
| 1991 | 17 | 0 |
| 1992 | 25 | 0 |
| 1993 | 18 | 0 |
| 1994 | 28 | 0 |
| 1995 | 16 | 0 |
| 1996 | 29 | 0 |
| 1997 | 15 | 0 |
| 1998 | 27 | 0 |
| 1999 | 22 | 0 |
| 2000 | 14 | 0 |
| 2001 | 28 | 8 |
| 2002 | 24 | 18 |
| 2003 | 26 | 28 |
| 2004 | 19 | 43 |
| 2005 | 22 | 33 |
| 2006 | 26 | 32 |
| 2007 | 11 | 40 |
| 2008 | 24 | 48 |
| 2009 | 18 | 62 |
| 2010 | 35 | 55 |
| 2011 | 45 | 55 |
| 2012 | 65 | 81 |
| 2013 | 55 | 78 |
| 2014 | 41 | 103 |
| 2015 | 68 | 100 |
| 2016 | 73 | 103 |
| 2017 | 67 | 127 |
| 2018 | 94 | 164 |
| 2019 | 126 | 158 |
| 2020 | 146 | 171 |
| 2021 | 101 | 135 |
| 2022 | 116 | 151 |
| 2023 | 115 | 177 |
| 2024 | 137 | 204 |
| 2025 | 113 | 157 |
| 2026 | 92 | 130 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Dual-scale toughened cement-based composite material and use thereof6 Oct 2026US 12,753,118 B2Qingdao University of Technology
- Uncharged clay blocking agent6 Oct 2026US 12,753,119 B2BASF SE
- Use of comb polymers as inerting agents for non-swelling layer-silicates6 Oct 2026US 12,753,120 B2Sika Technology AG
- Low-carbon construction binder and materials providing comfort in summer6 Oct 2026US 12,753,121 B2Materrup
- Silicon containing emulsion powders for use in making cement based on tile adhesive dry mix compositions6 Oct 2026US 12,753,126 B2Dow Global Technologies LLC
- Building boards and methods for manufacturing same8 Oct 2026US 2026/0307294 A1CertainTeed Gypsum, Inc.
- Cementitous compositions for reducing efflorescence8 Oct 2026US 2026/0308051 A1Tremco Cpg Inc.
- Hardened body of hydraulic composition8 Oct 2026US 2026/0308056 A1Kuraray Co., Ltd.
- Composition and treatment method thereof for 3d pringting material8 Oct 2026US 2026/0308063 A1Nano and Advanced Materials Institute Limited
- Smart construction materials for ambient modification of built environments8 Oct 2026US 2026/0308064 A1Texas State University
Most cited
By later US patents
- Articles of manufacture and methods for manufacturing laminate structures including inorganically filled sheets312US 5,830,548 AE. Khashoggi Industries · 1998
- Cementing multi-lateral wells232US 5,588,488 AHalliburton Company · 1996
- Universal fluids for drilling and cementing wells220US 5,464,060 AShell Oil Company · 1995
- Squeeze cementing219US 5,121,795 AHalliburton Company · 1992
- Fine particle size cement compositions and methods210US 5,346,012 AHalliburton Company · 1994