B01D 46/2407
Filter candles
Official title: {Filter candles}
B01D46/2407 (Filter candles) appears on 315 US grants and 169 published applications in this corpus.
Search patents in B01D- Granted patents
- 315
- Published applications
- 169
- Assignees
- 201
- Inventors
- 660
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 7 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 5 | 0 |
| 1982 | 6 | 0 |
| 1983 | 5 | 0 |
| 1984 | 5 | 0 |
| 1985 | 6 | 0 |
| 1986 | 2 | 0 |
| 1987 | 8 | 0 |
| 1988 | 7 | 0 |
| 1989 | 11 | 0 |
| 1990 | 7 | 0 |
| 1991 | 6 | 0 |
| 1992 | 13 | 0 |
| 1993 | 12 | 0 |
| 1994 | 12 | 0 |
| 1995 | 19 | 0 |
| 1996 | 9 | 0 |
| 1997 | 4 | 0 |
| 1998 | 12 | 0 |
| 1999 | 9 | 0 |
| 2000 | 8 | 0 |
| 2001 | 8 | 0 |
| 2002 | 10 | 4 |
| 2003 | 3 | 5 |
| 2004 | 10 | 4 |
| 2005 | 3 | 7 |
| 2006 | 6 | 5 |
| 2007 | 5 | 6 |
| 2008 | 1 | 6 |
| 2009 | 5 | 5 |
| 2010 | 3 | 10 |
| 2011 | 4 | 9 |
| 2012 | 6 | 6 |
| 2013 | 6 | 8 |
| 2014 | 3 | 12 |
| 2015 | 12 | 10 |
| 2016 | 8 | 4 |
| 2017 | 5 | 10 |
| 2018 | 0 | 3 |
| 2019 | 1 | 5 |
| 2020 | 3 | 4 |
| 2021 | 4 | 15 |
| 2022 | 11 | 12 |
| 2023 | 6 | 6 |
| 2024 | 4 | 6 |
| 2025 | 5 | 5 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Air filtration assembly6 Oct 2026US 12,752,230 B2Ufi Innovation Center S.R.L.
- Drying of filter elements in a filter system24 Mar 2026US 12,582,931 B2Simatek A/S
- Fiber bed filter and mist eliminator system with enhanced drainage13 Jan 2026US 12,521,663 B2Kimre, Inc.
- Filter device and method of cleaning-off a filter element of a filter device12 Aug 2025US 12,383,856 B2Herding GmbH Filtertechnik
- Filter unit with flow optimization1 Jul 2025US 12,343,662 B2Eaton Intelligent Power Limited
- Integrated synergistic purification process for sulfur, dust, and nitrogen oxides, using ceramic fiber tube6 Aug 2026US 2026/0225020 A1Shandong Jingyao Glass Group Co., Ltd.
- In-situ hot filtration for gas-solid-separation in carbide-derived carbon production12 Feb 2026US 2026/0042076 A1
- Fiberbed mist collector with improved filtering27 Nov 2025US 2025/0360447 A1Astec, Inc.
- Particulate removal system for use in hydroprocessing27 Nov 2025US 2025/0361449 A1Shell USA, Inc.
- Fiber bed filter and mist eliminator system with ehnanced drainage30 Oct 2025US 2025/0332534 A1Kimre, Inc.
Most cited
By later US patents
- Diesel particulate trap330US 4,329,162 ACorning Glass Works · 1982
- Compressor unit and separator therefor245US 5,158,585 AHitachi, Ltd. · 1992
- Non-round unitary filter cartridge193US 5,730,766 ABHA Group, Inc. · 1998
- Method for producing ceramic honeycomb filters127US 4,293,357 ANGK Insulators, Ltd. · 1981
- Filter apparatus and method of making it112US 4,420,316 ACorning Glass Works · 1983