C04B 2103/304
Air-entrainers
Official title: {Air-entrainers}
C04B2103/304 (Air-entrainers) appears on 65 US grants and 81 published applications in this corpus.
Search patents in C04B- Granted patents
- 65
- Published applications
- 81
- Assignees
- 60
- Inventors
- 239
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 2 |
| 2006 | 1 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 1 |
| 2009 | 2 | 4 |
| 2010 | 0 | 0 |
| 2011 | 3 | 0 |
| 2012 | 2 | 0 |
| 2013 | 0 | 1 |
| 2014 | 1 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 2 | 6 |
| 2018 | 4 | 6 |
| 2019 | 4 | 3 |
| 2020 | 3 | 10 |
| 2021 | 7 | 5 |
| 2022 | 4 | 4 |
| 2023 | 3 | 9 |
| 2024 | 4 | 8 |
| 2025 | 3 | 10 |
| 2026 | 4 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Crystalline cellulose reinforced cement8 Sep 2026US 12,729,158 B2
- Preparation of graphene nanosheets-based concrete additive14 Jul 2026US 12,679,780 B2Nanospan India Private Limited
- Method for making carbonated precast concrete products with enhanced durability5 May 2026US 12,617,725 B2Carbicrete Inc.
- Collapsible engagement mechanism13 Jan 2026US 12,522,537 B2
- Barrier for absorbing live fire ammunition and uses thereof30 Dec 2025US RE50,717 E1360° Ballistics, LLC
- Composition for adjusting of air pores in building products in the presence of sulfate-based superplasticizers1 Oct 2026US 2026/0296976 A1BASF SE
- Reducing mixer buildup of binder material through staged addition of raw materials10 Sep 2026US 2026/0265144 A1United States Gypsum Company
- Quick-setting magnesium based cement and concrete27 Aug 2026US 2026/0250191 A1ZS2 Technologies Ltd.
- Formulations and methods for extruded fiber cement products13 Aug 2026US 2026/0234057 A1James Hardie Technology Limited
- Inorganic nano-composite thermal insulation material and method of manufacture18 Jun 2026US 2026/0167565 A1Liatris, Inc.
Most cited
By later US patents
- Air controlling superplasticizers66US 5,703,174 AW. R. Grace & Co.-Conn. · 1997
- Method of producing a cement mortar with good stability in a fresh condition and a method using this mortar as a binding agent of producing a lightweight aggregate concrete with a high aggregate content51US 4,157,998 AAB Bofors · 1979
- Concrete admixture38US 4,808,641 AFujisawa Pharmaceutical Co., Ltd. · 1989
- Air entrainment with polyoxyalkylene copolymers for concrete treated with oxyalkylene SRA29US 6,277,191 B1W. R. Grace & Co.-Conn. · 2001
- Dispersant, setting retarder and air entrainment additive for cement25US 5,221,343 AHenkel Corporation · 1993