B01D 46/79
By liquid process
Official title: by liquid process
B01D46/79 (By liquid process) appears on 113 US grants and 121 published applications in this corpus.
Search patents in B01D- Granted patents
- 113
- Published applications
- 121
- Assignees
- 82
- Inventors
- 250
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 4 | 0 |
| 1979 | 3 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 5 | 0 |
| 2001 | 3 | 0 |
| 2002 | 1 | 0 |
| 2003 | 2 | 3 |
| 2004 | 4 | 4 |
| 2005 | 2 | 4 |
| 2006 | 1 | 2 |
| 2007 | 1 | 0 |
| 2008 | 0 | 2 |
| 2009 | 2 | 3 |
| 2010 | 0 | 6 |
| 2011 | 1 | 2 |
| 2012 | 1 | 2 |
| 2013 | 4 | 5 |
| 2014 | 2 | 7 |
| 2015 | 2 | 7 |
| 2016 | 3 | 4 |
| 2017 | 5 | 5 |
| 2018 | 2 | 6 |
| 2019 | 9 | 7 |
| 2020 | 7 | 8 |
| 2021 | 3 | 9 |
| 2022 | 6 | 8 |
| 2023 | 6 | 6 |
| 2024 | 5 | 9 |
| 2025 | 15 | 6 |
| 2026 | 2 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Drying of filter elements in a filter system24 Mar 2026US 12,582,931 B2Simatek A/S
- Particle removal method in semiconductor fabrication process3 Mar 2026US 12,568,785 B2Taiwan Semiconductor Manufacturing Company.Ltd
- Mechanical electrostatic filter assembly30 Dec 2025US 12,508,530 B2
- Filter oil formulation23 Dec 2025US 12,503,991 B2K&N Engineering, Inc.
- Exhaust gas emission circulation filtering apparatus for air pollution prevention16 Dec 2025US 12,496,545 B2Welter’s Co., Ltd.
- Active carrier channel for lint management within an appliance26 Mar 2026US 2026/0085465 A1Whirlpool Corporation
- Filter oil formulation19 Mar 2026US 2026/0078726 A1K&N Engineering, Inc.
- Filter cleaning system for use with an external mounted filter assembly5 Mar 2026US 2026/0061356 A1
- Particle removal method in semiconductor fabrication process26 Feb 2026US 2026/0060024 A1Taiwan Semiconductor Manufacturing Company.Ltd
- Method and apparatus for controlling and cleaning a cooking hood29 Jan 2026US 2026/0027504 A1Intellinox Inc.
Most cited
By later US patents
- Ventilating apparatus including exhaust filter exchanger42US 4,066,425 A1978
- Method and apparatus for washing a plurality of filter elements35US 4,731,100 AHenkel Kommanditgesellschaft auf Aktien · 1988
- In situ filter cleaning system for gas streams35US 5,358,552 APall Corporation · 1994
- High efficiency permanent air filter and method of manufacture34US 6,322,615 B12001
- High efficiency permanent air filter and method of manufacture33US 6,056,809 A2000