B01D 2251/512
Phosphoric acid
B01D2251/512 (Phosphoric acid) appears on 25 US grants and 26 published applications in this corpus.
Search patents in B01D- Granted patents
- 25
- Published applications
- 26
- Assignees
- 28
- Inventors
- 101
- Latest grant
- 11 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 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 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 2 |
| 2010 | 2 | 1 |
| 2011 | 1 | 2 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 1 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 6 |
| 2019 | 3 | 2 |
| 2020 | 1 | 3 |
| 2021 | 4 | 1 |
| 2022 | 1 | 1 |
| 2023 | 1 | 2 |
| 2024 | 1 | 3 |
| 2025 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Liquid sorbent-enhanced ammonia production11 Nov 2025US 12,465,888 B1Alliance for Sustainable Energy, LLC
- Systems and processes for producing fixed-nitrogen compounds7 Jan 2025US 12,186,728 B2Nitricity Inc.
- System for removing ammonia, dust and pathogens from air within an animal rearing/sheltering facility21 May 2024US 11,986,768 B2The United States of America as represented by the Secretary of Agriculture
- Method of manufacturing an adsorbent and resulting composition of matter17 Jan 2023US 11,554,360 B2University of Louisiana at Lafayette
- Absorbent for selective removal of hydrogen sulfide from a fluid stream28 Jun 2022US 11,369,919 B2BASF SE
- Gas adsorbent and gas adsorption sheet, filter medium, and air filter using same21 Nov 2024US 2024/0382929 A1Toray Industries, Inc.
- Air-cleaning filter having dust collecting and deodorizing functions and preparation method therefor11 Jul 2024US 2024/0226790 A9Coway Co., Ltd.
- Air-cleaning filter having dust collecting and deodorizing functions and preparation method therefor25 Apr 2024US 2024/0131462 A1Coway Co., Ltd.
- System for removing ammonia, dust and pathogens from air within an animal rearing/sheltering facility12 Oct 2023US 2023/0321587 A1The United States of America as represented by the Secretary of Agriculture
- Gas purifying filter and substrate treatment apparatus including the same14 Sep 2023US 2023/0285897 A1EcoPro HN Co., Ltd.
Most cited
By later US patents
- Elimination of odors from waste material74US 4,405,354 AUniscope, Inc. · 1983
- Method for producing chlorine dioxide using chemically impregnated zeolite46US 5,567,405 AKlatte Inc. · 1996
- Method for producing chlorine dioxide using chemically impregnated zeolite34US 5,730,948 AEnvironmental Safety Systems, Inc. · 1998
- Method for producing chlorine dioxide and removing chlorine dioxide using chemically impregnated zeolite33US 5,573,743 AKlatte Inc. · 1996
- Chemically impregnated zeolite and method for its production and use25US 5,776,850 AKlatte Inc. · 1998