C04B 24/226
Sulfonated naphtalene-formaldehyde condensation products
Official title: {Sulfonated naphtalene-formaldehyde condensation products}
C04B24/226 (Sulfonated naphtalene-formaldehyde condensation products) appears on 30 US grants and 33 published applications in this corpus.
Search patents in C04B- Granted patents
- 30
- Published applications
- 33
- Assignees
- 16
- Inventors
- 77
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 3 |
| 2005 | 1 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 2 |
| 2011 | 0 | 1 |
| 2012 | 2 | 1 |
| 2013 | 1 | 1 |
| 2014 | 0 | 1 |
| 2015 | 1 | 1 |
| 2016 | 0 | 1 |
| 2017 | 1 | 2 |
| 2018 | 1 | 6 |
| 2019 | 4 | 3 |
| 2020 | 4 | 2 |
| 2021 | 2 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 1 | 4 |
| 2025 | 1 | 1 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- 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
- Compositions and methods for well cementing17 Mar 2026US 12,577,449 B2Schlumberger Technology Corporation
- Compositions and methods for well cementing10 Jun 2025US 12,325,822 B2Schlumberger Technology Corporation
- Compositions and methods for well cementing5 Mar 2024US 11,920,079 B2Schlumberger Technology Corporation
- Non-aqueous liquid anti-shrinkage cement additives21 Sep 2021US 11,124,452 B2Halliburton Energy Services.Inc.
- Composition for adjusting of air pores in building products in the presence of sulfate-based superplasticizers1 Oct 2026US 2026/0296976 A1BASF SE
- Compositions and methods for well cementing23 Jul 2026US 2026/0209594 A1Schlumberger Technology Corporation
- Compositions and methods for well cementing2 Oct 2025US 2025/0304847 A1Schlumberger Technology Corporation
- Water-dispersible polymer powder compositions for cementing in subterranean formation, their manufacture and use12 Sep 2024US 2024/0301272 A1BASF SE
- Cement dispersant comprising a naphthalenesulfonic acid polycondensate and at least one of a phosphorylated polycondensate and a polycarboxylate ether, and construction composition29 Aug 2024US 2024/0286955 A1Construction Research & Technology GmbH
Most cited
By later US patents
- Dispersant and foaming agent combination61US 6,774,146 B2GEO Specialty Chemicals, Inc. · 2004
- High starch light weight gypsum wallboard53US 7,731,794 B2United States Gypsum Company · 2010
- High starch light weight gypsum wallboard37US 8,197,952 B2United States Gypsum Company · 2012
- Slurries and methods of making light weight gypsum board30US 8,257,489 B2United States Gypsum Company · 2012
- Use of salts of water-soluble27US 4,725,665 AChemie Linz Aktiengesellschaft · 1988