D21H 21/12
Defoamers
D21H21/12 (Defoamers) appears on 71 US grants and 58 published applications in this corpus.
Search patents in D21H- Granted patents
- 71
- Published applications
- 58
- Assignees
- 52
- Inventors
- 209
- Latest grant
- 31 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 0 | 1 |
| 2002 | 2 | 1 |
| 2003 | 5 | 1 |
| 2004 | 4 | 1 |
| 2005 | 1 | 1 |
| 2006 | 1 | 3 |
| 2007 | 0 | 0 |
| 2008 | 1 | 2 |
| 2009 | 0 | 1 |
| 2010 | 1 | 2 |
| 2011 | 5 | 4 |
| 2012 | 2 | 1 |
| 2013 | 2 | 2 |
| 2014 | 1 | 2 |
| 2015 | 1 | 7 |
| 2016 | 2 | 5 |
| 2017 | 4 | 1 |
| 2018 | 3 | 4 |
| 2019 | 1 | 1 |
| 2020 | 1 | 0 |
| 2021 | 3 | 6 |
| 2022 | 1 | 3 |
| 2023 | 1 | 2 |
| 2024 | 3 | 5 |
| 2025 | 0 | 2 |
| 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
- 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
- Base paper for eco-friendly paper cups12 Dec 2023US 11,840,807 B2Hankuk Paper Mfg, Co, Ltd.
- Emulsion foam reducer for wet processing of cellulose or wood-based products or in food processing31 Jul 2025US 2025/0242280 A1State Line Holdings, LLC
- Pulp for glass interleaving paper, glass interleaving paper, and production method therefor6 Mar 2025US 2025/0075429 A1Oji Holdings Corporation
- Defoaming agent and compositions containing the defoaming agent28 Nov 2024US 2024/0390820 A1Solenis Technologies, L.P.
- Drainage aids and the use thereof21 Nov 2024US 2024/0384472 A1
- Dispersible paper, method for producing same, packaging and use of said paper17 Oct 2024US 2024/0344274 A1Klabin S.A.
Most cited
By later US patents
- Method of monitoring surface associated microbiological activity in process streams40US 7,949,432 B2Nalco Company · 2011
- Compositions including ether-capped poly (oxyalkylated) alcohol wetting agents38US 6,686,330 B2The Procter & Gamble Company · 2004
- Method for the preparation of paper containing plastic particles30US 3,941,634 AKemanord Aktiebolag · 1976
- Pulp and papermaking additive23US 4,107,073 ANalco Chemical Company · 1978
- Method for producing a non-woven glass fiber mat comprising bundles of fibers22US 6,054,022 AOwens Corning Fiberglas Technology, Inc. · 2000