B01D 2251/70
Organic acids
B01D2251/70 (Organic acids) appears on 75 US grants and 116 published applications in this corpus.
Search patents in B01D- Granted patents
- 75
- Published applications
- 116
- Assignees
- 78
- Inventors
- 269
- Latest grant
- 2 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 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 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 0 |
| 2009 | 0 | 2 |
| 2010 | 3 | 7 |
| 2011 | 2 | 8 |
| 2012 | 4 | 6 |
| 2013 | 3 | 1 |
| 2014 | 3 | 4 |
| 2015 | 3 | 4 |
| 2016 | 2 | 7 |
| 2017 | 2 | 10 |
| 2018 | 4 | 6 |
| 2019 | 7 | 8 |
| 2020 | 7 | 7 |
| 2021 | 7 | 11 |
| 2022 | 6 | 7 |
| 2023 | 7 | 7 |
| 2024 | 6 | 6 |
| 2025 | 4 | 7 |
| 2026 | 0 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Methods for absorbing a targeted compound from a gas stream for subsequent processing or use2 Sep 2025US 12,403,421 B2
- Systems and methods for generating water from air19 Aug 2025US 12,392,117 B2Source Global, PBC
- Process for recycling contaminated solid materials and purification of gases5 Aug 2025US 12,377,451 B2
- Carbon dioxide fixation method3 Jun 2025US 12,319,584 B2Mitsubishi Heavy Industries, Ltd.
- Treatment system5 Nov 2024US 12,134,743 B2CF Vessel LLC
- Ethylene oxide abatement systems1 Oct 2026US 2026/0295520 A1Boston Scientific Scimed, Inc.
- Ethylene oxide abatement systems1 Oct 2026US 2026/0295522 A1Boston Scientific Scimed, Inc.
- Ethylene oxide abatement systems1 Oct 2026US 2026/0295523 A1Boston Scientific Scimed, Inc.
- Ethylene oxide abatement systems1 Oct 2026US 2026/0295524 A1Boston Scientific Scimed, Inc.
- Process for washing treatment for purifying ammonia-containing air3 Sep 2026US 2026/0257166 A1Klaas De Boer Beheer B.V.
Most cited
By later US patents
- Elimination of odors from waste material74US 4,405,354 AUniscope, Inc. · 1983
- Oxygen scavenger and a method for scavenging oxygen18US 8,048,201 B2Desiccare, Inc. · 2011
- System and method for reducing emissions in a hog confinement facility18US 8,182,593 B22012
- Selective catalytic reduction of nitrogen oxides15US 5,612,010 AGas Metropolitain Inc. · 1997
- Filter unit for avoiding environmental pollution in cemeteries10US 4,162,289 AInternacional de Ciencia y Tecnologia, S.A. · 1979