B01D 61/04
Feed pretreatment
B01D61/04 (Feed pretreatment) appears on 589 US grants and 761 published applications in this corpus.
Search patents in B01D- Granted patents
- 589
- Published applications
- 761
- Assignees
- 466
- Inventors
- 1,690
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 4 | 0 |
| 1993 | 10 | 0 |
| 1994 | 7 | 0 |
| 1995 | 5 | 0 |
| 1996 | 13 | 0 |
| 1997 | 20 | 0 |
| 1998 | 16 | 0 |
| 1999 | 14 | 0 |
| 2000 | 15 | 0 |
| 2001 | 20 | 1 |
| 2002 | 15 | 17 |
| 2003 | 14 | 25 |
| 2004 | 13 | 32 |
| 2005 | 12 | 26 |
| 2006 | 12 | 20 |
| 2007 | 13 | 16 |
| 2008 | 11 | 16 |
| 2009 | 9 | 8 |
| 2010 | 7 | 21 |
| 2011 | 7 | 26 |
| 2012 | 14 | 23 |
| 2013 | 9 | 24 |
| 2014 | 13 | 27 |
| 2015 | 14 | 37 |
| 2016 | 11 | 37 |
| 2017 | 6 | 48 |
| 2018 | 28 | 47 |
| 2019 | 41 | 43 |
| 2020 | 27 | 35 |
| 2021 | 32 | 41 |
| 2022 | 32 | 39 |
| 2023 | 26 | 36 |
| 2024 | 37 | 49 |
| 2025 | 22 | 37 |
| 2026 | 23 | 30 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Water treatment method and water treatment agent composition8 Sep 2026US 12,728,390 B2Organo Corporation
- Method for efficiently extracting and separating high-purity tetrodotoxin from pufferfish viscera18 Aug 2026US 12,709,618 B2Zhongyang Biotechnology (Shanghai) Co., LTD.
- Recycling automotive phosphate rinse water stream30 Jun 2026US 12,668,506 B2Ecolab USA Inc.
- Water purifier16 Jun 2026US 12,654,137 B2Coway Co., Ltd.
- 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.
- Utilization of an ultra-high pressure reverse osmosis membrane system to treat industrial wastewater or a reverse osmosis reject waste stream8 Oct 2026US 2026/0308017 A1Renovo Resources LLC
- System and Method for Desalination of Water3 Sep 2026US 2026/0257175 A1FSubsea AS
- Process for recovery of lithium from brine3 Sep 2026US 2026/0257931 A1Aquatech International Corporation
- Method for Increasing Reverse Osmosis Recovery for High Silica Waters27 Aug 2026US 2026/0250161 A1Veolia Water Solutions & Technologies Support
- Water purification system20 Aug 2026US 2026/0242267 A1ZRO Waste Water, Inc.
Most cited
By later US patents
- Hot water disinfection of dialysis machines, including the extracorporeal circuit thereof490US 5,591,344 AAksys, Ltd. · 1997
- 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
- Methods for ultrafiltration control in hemodialysis212US 5,725,776 AAksys, Ltd. · 1998
- Water treatment for dialysate preparation164US 5,762,782 AAksys, Ltd. · 1998