D21C 3/28
Prevention of foam
D21C3/28 (Prevention of foam) appears on 31 US grants and 23 published applications in this corpus.
Search patents in D21C- Granted patents
- 31
- Published applications
- 23
- Assignees
- 23
- Inventors
- 87
- Latest grant
- 31 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 2 | 2 |
| 2012 | 1 | 1 |
| 2013 | 2 | 1 |
| 2014 | 0 | 1 |
| 2015 | 0 | 2 |
| 2016 | 1 | 4 |
| 2017 | 3 | 1 |
| 2018 | 2 | 0 |
| 2019 | 1 | 1 |
| 2020 | 1 | 1 |
| 2021 | 0 | 0 |
| 2022 | 1 | 3 |
| 2023 | 0 | 2 |
| 2024 | 3 | 1 |
| 2025 | 1 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Paper and pulp foam control agent31 Mar 2026US 12,590,414 B2Dow Global Technologies LLC
- Process for increasing digestion efficiency of lignocellulosic material in a treatment vessel8 Jul 2025US 12,351,981 B2Solenis Technologies, L.P.
- Defoaming formulations containing organopolysiloxanes20 Aug 2024US 12,064,711 B2Wacker Chemie AG
- Defoaming formulations containing organopolysiloxanes19 Mar 2024US 11,931,673 B2Wacker Chemie AG
- Defoaming formulations containing organopolysiloxanes12 Mar 2024US 11,925,883 B2Wacker Chemie AG
- Process for increasing digestion efficiency of lignocellulosic material in a treatment vessel30 Oct 2025US 2025/0333905 A1Solenis Technologies, L.P.
- Method for digesting lignocellulosic material30 May 2024US 2024/0175205 A1Solenis Technologies, L.P.
- Paper and pulp foam control agent30 Nov 2023US 2023/0383469 A1Dow Global Technologies LLC
- Process for increasing digestion efficiency of lignocellulosic material in a treatment vessel25 May 2023US 2023/0160140 A1Solenis Technologies, L.P.
- Defoaming formulations containing organopolysiloxanes6 Jan 2022US 2022/0001301 A1Wacker Chemie AG
Most cited
By later US patents
- Use of alkoxylation products of epoxidized fats as antifoaming agents29US 6,057,375 AHenkel Kommanditgesellschaft auf Aktien · 2000
- Defoamer composition and method of using the same28US 5,645,762 AHenkel Corporation · 1997
- Pulp and papermaking additive23US 4,107,073 ANalco Chemical Company · 1978
- Water-soluble or water-dispersible graft polymers, their preparation and their use21US 4,612,352 ACiba-Geigy Corporation · 1986
- Silicone-based antifoam compositions cross-reference to related applications16US 5,914,362 ADow Corning Corporation · 1999