C04B 2111/23
Acid resistance
Official title: Acid resistance, e.g. against acid air or rain
C04B2111/23 (Acid resistance) appears on 69 US grants and 67 published applications in this corpus.
Search patents in C04B- Granted patents
- 69
- Published applications
- 67
- Assignees
- 66
- Inventors
- 191
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 6 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 2 |
| 2003 | 3 | 2 |
| 2004 | 1 | 1 |
| 2005 | 0 | 3 |
| 2006 | 0 | 2 |
| 2007 | 1 | 1 |
| 2008 | 2 | 2 |
| 2009 | 1 | 2 |
| 2010 | 1 | 3 |
| 2011 | 1 | 2 |
| 2012 | 0 | 5 |
| 2013 | 2 | 2 |
| 2014 | 3 | 1 |
| 2015 | 1 | 1 |
| 2016 | 1 | 0 |
| 2017 | 2 | 2 |
| 2018 | 0 | 2 |
| 2019 | 2 | 1 |
| 2020 | 4 | 6 |
| 2021 | 2 | 6 |
| 2022 | 4 | 7 |
| 2023 | 3 | 4 |
| 2024 | 3 | 4 |
| 2025 | 5 | 5 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Binder for an agglomeration process8 Sep 2026US 12,729,161 B2Mintek
- Industrial fluids with dilution resistance and tunable viscosity, and methods of making and using industrial fluids25 Aug 2026US 12,715,810 B2Blue Nose Technologies LLC
- Alkali-activated cement composition21 Oct 2025US 12,448,333 B2King Fahd University of Petroleum and Minerals
- Structure protection sheet, concrete block, and method for manufacturing reinforced structure29 Jul 2025US 12,371,378 B2Keiwa Inc.
- Industrial fluids with dilution resistance and tunable viscosity, and methods of making and using industrial fluids1 Apr 2025US 12,264,103 B2Blue Nose Technologies LLC
- Geopolymer coating for acid and elevated temperature resistance13 Nov 2025US 2025/0346527 A1W. R. Meadows, Inc.
- Structure Protection Sheet, Concrete Block, and Method for Manufacturing Reinforced Structure30 Oct 2025US 2025/0333360 A1Keiwa Inc.
- Industrial fluids with dilution resistance and tunable viscosity, and methods of making and using industrial fluids17 Jul 2025US 2025/0230096 A1Blue Nose Technologies LLC
- Chemical resistant polymer concrete and methods of use thereof24 Apr 2025US 2025/0128992 A1Composite Construction, LLC
- Alkali-activated cement composition6 Feb 2025US 2025/0042816 A1King Fahd University of Petroleum and Minerals
Most cited
By later US patents
- Low-cost, high early strength, acid-resistant pozzolanic cement139US 5,352,288 ADynastone LC · 1994
- Reactive magnesium oxide cements75US 7,347,896 B2Tececo Pty Ltd · 2008
- Rubber-crumb-reinforced cement concrete49US 5,391,226 ATiremix Corporation · 1995
- Polymer-modified cements with improved chemical resistance37US 5,162,060 ARohm and Haas Company · 1992
- Cement, method of preparing such cement and method of making products using such cement35US 5,084,102 AEerste Nederlandse Cement Industrie (ENCI) N. V. · 1992