B01D 2311/12
Addition of chemical agents
B01D2311/12 (Addition of chemical agents) appears on 182 US grants and 303 published applications in this corpus.
Search patents in B01D- Granted patents
- 182
- Published applications
- 303
- Assignees
- 189
- Inventors
- 685
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 1 |
| 2006 | 2 | 3 |
| 2007 | 0 | 3 |
| 2008 | 0 | 4 |
| 2009 | 1 | 3 |
| 2010 | 2 | 5 |
| 2011 | 9 | 8 |
| 2012 | 4 | 6 |
| 2013 | 3 | 8 |
| 2014 | 6 | 16 |
| 2015 | 5 | 18 |
| 2016 | 9 | 17 |
| 2017 | 5 | 23 |
| 2018 | 12 | 15 |
| 2019 | 14 | 22 |
| 2020 | 14 | 24 |
| 2021 | 17 | 22 |
| 2022 | 18 | 12 |
| 2023 | 17 | 38 |
| 2024 | 9 | 22 |
| 2025 | 16 | 20 |
| 2026 | 15 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for purifying liquid and system for the implementation thereof11 Aug 2026US 12,702,952 B2Electrophor, Inc.
- Recycling automotive phosphate rinse water stream30 Jun 2026US 12,668,506 B2Ecolab USA Inc.
- 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.
- Sorbent coated hollow fiber filtration method using less spent sorbent flushing liquid12 May 2026US 12,623,170 B2Electrophor, Inc.
- Techniques for managing scale formation in reverse osmosis (RO) and nanofiltration (NF) systems and a hybrid filtration architecture implementing the same12 May 2026US 12,623,921 B2Clean H2O Technologies, LLC
- Method for recovering alkali metal salt and apparatus for recovering alkali metal salt1 Oct 2026US 2026/0295533 A1Toray Industries, Inc.
- Control device, control method, and control program6 Aug 2026US 2026/0225933 A1Yokogawa Electric Corporation
- Systems, kits, and methods for preventing membrane fouling30 Jul 2026US 2026/0216656 A1
- Method for evaluating oxidation risk of separation membrane, program for evaluating oxidation risk, recording medium, and evaluation device9 Jul 2026US 2026/0192257 A1Toray Industries, Inc.
- Biocidal control in aqueous membrane separation systems18 Jun 2026US 2026/0167541 A1Albemarle Corporation
Most cited
By later US patents
- System and method for delivery of regional citrate anticoagulation to extracorporeal blood circuits58US 8,211,048 B2Henry Ford Health System · 2012
- Integrated system for lithium extraction and conversion27US 10,648,090 B2Lilac Solutions, Inc. · 2020
- Method for treating hexavalent chromium-containing aqueous solution26US 9,802,841 B2Panasonic Intellectual Property Management Co., Ltd. · 2017
- Self-contained transportable water treatment system21US 8,808,537 B12014
- Scale detection device and method for concentrating device, and water reclamation processing treatment system17US 10,407,331 B2Mitsubishi Heavy Industries Engineering, Ltd. · 2019