B01D 35/06
Filters making use of electricity or magnetism
Official title: Filters making use of electricity or magnetism (ultrafiltration, microfiltration B01D61/14; electrodialysis, electro-osmosis B01D61/42; devices comprising filters and magnetic separators B03C1/30)
B01D35/06 (Filters making use of electricity or magnetism) appears on 528 US grants and 365 published applications in this corpus.
Search patents in B01D- Granted patents
- 528
- Published applications
- 365
- Assignees
- 320
- Inventors
- 990
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 12 | 0 |
| 1978 | 6 | 0 |
| 1979 | 6 | 0 |
| 1980 | 7 | 0 |
| 1981 | 12 | 0 |
| 1982 | 6 | 0 |
| 1983 | 7 | 0 |
| 1984 | 4 | 0 |
| 1985 | 11 | 0 |
| 1986 | 14 | 0 |
| 1987 | 17 | 0 |
| 1988 | 11 | 0 |
| 1989 | 12 | 0 |
| 1990 | 8 | 0 |
| 1991 | 7 | 0 |
| 1992 | 8 | 0 |
| 1993 | 7 | 0 |
| 1994 | 7 | 0 |
| 1995 | 10 | 0 |
| 1996 | 9 | 0 |
| 1997 | 11 | 0 |
| 1998 | 13 | 0 |
| 1999 | 14 | 0 |
| 2000 | 10 | 0 |
| 2001 | 9 | 5 |
| 2002 | 10 | 6 |
| 2003 | 8 | 9 |
| 2004 | 4 | 7 |
| 2005 | 7 | 4 |
| 2006 | 1 | 9 |
| 2007 | 2 | 6 |
| 2008 | 5 | 9 |
| 2009 | 5 | 9 |
| 2010 | 5 | 10 |
| 2011 | 10 | 9 |
| 2012 | 8 | 18 |
| 2013 | 3 | 15 |
| 2014 | 13 | 17 |
| 2015 | 11 | 12 |
| 2016 | 11 | 15 |
| 2017 | 16 | 15 |
| 2018 | 13 | 23 |
| 2019 | 15 | 25 |
| 2020 | 19 | 32 |
| 2021 | 19 | 26 |
| 2022 | 23 | 27 |
| 2023 | 21 | 18 |
| 2024 | 17 | 15 |
| 2025 | 23 | 15 |
| 2026 | 10 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Microfluidic purification device29 Sep 2026US 12,746,548 B2Oriental System Technology Inc.
- Gas separation device system using waveform disks15 Sep 2026US 12,734,477 B2
- Soft-water system25 Aug 2026US 12,715,795 B2Kyungdong Navien Co., Ltd.
- Charged particle filter and removal system21 Jul 2026US 12,685,950 B2Taiwan Semiconductor Manufacturing Company.Ltd
- Water purifier16 Jun 2026US 12,654,137 B2Coway Co., Ltd.
- Altering properties of a fluid and magnetically assisted desalination6 Aug 2026US 2026/0225927 A1
- Water filtration device30 Jul 2026US 2026/0216623 A1LG Electronics Inc.
- Disk-Pack Turbine11 Jun 2026US 2026/0160237 A1Qwtip LLC
- High-gradient magnetic field for sustainable transition metal separation and recovery30 Apr 2026US 2026/0115735 A1The Florida State University Research Foundation, Inc.
- Filtration device and filtration system23 Apr 2026US 2026/0108831 A1Mitsubishi Kakoki Kaisha, Ltd.
Most cited
By later US patents
- Ferromagnetic separation process and material265US 3,985,649 A1976
- Electrical devices containing conductive polymers133US 4,689,475 ARaychem Corporation · 1987
- Electrode structures for electric treatment of fluids and filters using same119US 3,980,541 A1976
- Electrical devices containing conductive polymers106US 4,800,253 ARaychem Corporation · 1989
- Filtration method and apparatus86US 4,790,942 AMembrex, Inc. · 1988