B01D 2321/16
Use of chemical agents
B01D2321/16 (Use of chemical agents) appears on 534 US grants and 666 published applications in this corpus.
Search patents in B01D- Granted patents
- 534
- Published applications
- 666
- Assignees
- 382
- Inventors
- 1,690
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 8 | 0 |
| 1980 | 3 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 1 | 0 |
| 1987 | 9 | 0 |
| 1988 | 6 | 0 |
| 1989 | 5 | 0 |
| 1990 | 4 | 0 |
| 1991 | 6 | 0 |
| 1992 | 2 | 0 |
| 1993 | 11 | 0 |
| 1994 | 7 | 0 |
| 1995 | 5 | 0 |
| 1996 | 6 | 0 |
| 1997 | 21 | 0 |
| 1998 | 9 | 0 |
| 1999 | 14 | 0 |
| 2000 | 18 | 0 |
| 2001 | 21 | 6 |
| 2002 | 8 | 12 |
| 2003 | 9 | 23 |
| 2004 | 12 | 26 |
| 2005 | 13 | 24 |
| 2006 | 15 | 33 |
| 2007 | 9 | 28 |
| 2008 | 6 | 25 |
| 2009 | 9 | 18 |
| 2010 | 8 | 29 |
| 2011 | 18 | 28 |
| 2012 | 12 | 23 |
| 2013 | 21 | 30 |
| 2014 | 8 | 20 |
| 2015 | 16 | 29 |
| 2016 | 17 | 25 |
| 2017 | 11 | 27 |
| 2018 | 14 | 31 |
| 2019 | 19 | 27 |
| 2020 | 22 | 24 |
| 2021 | 18 | 38 |
| 2022 | 24 | 27 |
| 2023 | 19 | 31 |
| 2024 | 21 | 24 |
| 2025 | 13 | 30 |
| 2026 | 16 | 28 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Water treatment method and water treatment agent composition8 Sep 2026US 12,728,390 B2Organo Corporation
- Method for operating separation membrane module, computer-readable recording medium having program recorded thereon, and water production system18 Aug 2026US 12,708,878 B2Toray Industries, Inc.
- Device and method for protecting drinking water from microorganisms30 Jun 2026US 12,667,810 B2BWT Holding GmbH
- Method for operating reverse osmosis membrane device, a slime control method, and a water treatment device16 Jun 2026US 12,655,041 B2Kurita Water Industries Ltd.
- Method of cleaning a fouled reverse osmosis membrane12 May 2026US 12,623,171 B1King Fahd University of Petroleum and Minerals
- Modular multi-filter systems and methods of use1 Oct 2026US 2026/0295538 A1Pentair Water Pool and Spa, Inc.
- In line cleaning in place process for alternating tangential flow filter1 Oct 2026US 2026/0295539 A1Enzene Biosciences Limited
- Ultra-low power membrane-assisted lithium extraction system with passive foulant removal24 Sep 2026US 2026/0284598 A1Lyten, Inc.
- Cleaning method of membrane housing, membrane housing cleaned by the cleaning method, and ultrapure water manufacturing apparatus including the membrane housing17 Sep 2026US 2026/0273471 A1Organo Corporation
- Container and water treatment system20 Aug 2026US 2026/0241342 A1Yokogawa Electric Corporation
Most cited
By later US patents
- Purification of saline water838US 4,036,749 A1977
- Hot water disinfection of dialysis machines, including the extracorporeal circuit thereof490US 5,591,344 AAksys, Ltd. · 1997
- Hemofiltration and plasmafiltration devices and methods308US 5,919,369 AHemocleanse, Inc. · 1999
- Hemodialysis machine with automatic priming by induced pressure pulses251US 5,863,421 AAksys, Ltd. · 1999
- Method of rinsing back blood to hemodialysis patient243US 5,690,831 AAksys, Ltd. · 1997