B01D 19/04
By addition of chemical substances
Official title: by addition of chemical substances
B01D19/04 (By addition of chemical substances) appears on 660 US grants and 388 published applications in this corpus.
Search patents in B01D- Granted patents
- 660
- Published applications
- 388
- Assignees
- 307
- Inventors
- 1,449
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 17 | 0 |
| 1978 | 24 | 0 |
| 1979 | 6 | 0 |
| 1980 | 7 | 0 |
| 1981 | 6 | 0 |
| 1982 | 9 | 0 |
| 1983 | 9 | 0 |
| 1984 | 13 | 0 |
| 1985 | 11 | 0 |
| 1986 | 13 | 0 |
| 1987 | 12 | 0 |
| 1988 | 8 | 0 |
| 1989 | 11 | 0 |
| 1990 | 17 | 0 |
| 1991 | 17 | 0 |
| 1992 | 16 | 0 |
| 1993 | 10 | 0 |
| 1994 | 15 | 0 |
| 1995 | 22 | 0 |
| 1996 | 20 | 0 |
| 1997 | 27 | 0 |
| 1998 | 28 | 0 |
| 1999 | 24 | 0 |
| 2000 | 17 | 0 |
| 2001 | 14 | 4 |
| 2002 | 17 | 14 |
| 2003 | 17 | 15 |
| 2004 | 6 | 18 |
| 2005 | 8 | 15 |
| 2006 | 8 | 17 |
| 2007 | 7 | 15 |
| 2008 | 6 | 9 |
| 2009 | 6 | 9 |
| 2010 | 7 | 12 |
| 2011 | 10 | 18 |
| 2012 | 9 | 15 |
| 2013 | 14 | 14 |
| 2014 | 10 | 21 |
| 2015 | 16 | 16 |
| 2016 | 13 | 13 |
| 2017 | 11 | 20 |
| 2018 | 15 | 15 |
| 2019 | 9 | 20 |
| 2020 | 19 | 17 |
| 2021 | 7 | 20 |
| 2022 | 14 | 18 |
| 2023 | 14 | 17 |
| 2024 | 15 | 19 |
| 2025 | 13 | 10 |
| 2026 | 5 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Enhanced foam fractionation of oil phase from aqueous/oil mixed phase via increased viscoelasticity8 Sep 2026US 12,729,140 B2Ecolab USA Inc.
- Compositions and methods for breaking foams and emulsions11 Aug 2026US 12,703,822 B2Chevron U.S.A.Inc.
- Foam control composition30 Jun 2026US 12,668,758 B2Wacker Chemie AG
- Anionic switchable hydrophilicity solvents21 Apr 2026US 12,605,653 B2Queen's University at Kingston
- Paper and pulp foam control agent31 Mar 2026US 12,590,414 B2Dow Global Technologies LLC
- Defoamer compositions, aqueous paint compositions and articles27 Aug 2026US 2026/0250518 A1Kusumoto Chemicals, Ltd.
- Emulsifiers formed from polyol esters of fatty acids6 Aug 2026US 2026/0225991 A1
- Methods for foam mitigation using anti-foam and de-foaming compositions16 Jul 2026US 2026/0199810 A1Ecolab USA Inc.
- Process for condensing oxygenate mixtures11 Jun 2026US 2026/0159467 A1Topsoe A/S
- Application of microcapsules in antifoaming formulations based on silicones and their derivatives, process for preparing microcapsules, and method for reducing foam in oil28 May 2026US 2026/0145100 A1Petroleo Brasileiro S.A. - Petrobras
Most cited
By later US patents
- Process for the silylation of inorganic oxides99US 5,686,054 AWacker Chemie AG · 1997
- Process for the silylation of inorganic oxides78US 5,851,715 AWacker Chemie AG · 1998
- Antifoam/defoamer composition71US 4,950,420 ANalco Chemical Company · 1990
- Defoaming composition68US 5,275,822 AValentine Enterprises, Inc. · 1994
- Organopolysiloxanes for defoaming aqueous systems68US 6,858,663 B2Goldschmidt GmbH · 2005