B01D 2275/30
Porosity of filtering material
B01D2275/30 (Porosity of filtering material) appears on 167 US grants and 185 published applications in this corpus.
Search patents in B01D- Granted patents
- 167
- Published applications
- 185
- Assignees
- 137
- Inventors
- 466
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 6 | 0 |
| 2001 | 2 | 1 |
| 2002 | 8 | 4 |
| 2003 | 3 | 7 |
| 2004 | 7 | 15 |
| 2005 | 5 | 10 |
| 2006 | 3 | 16 |
| 2007 | 5 | 10 |
| 2008 | 5 | 10 |
| 2009 | 7 | 11 |
| 2010 | 4 | 9 |
| 2011 | 8 | 3 |
| 2012 | 13 | 9 |
| 2013 | 10 | 2 |
| 2014 | 3 | 6 |
| 2015 | 2 | 3 |
| 2016 | 6 | 4 |
| 2017 | 2 | 6 |
| 2018 | 8 | 7 |
| 2019 | 2 | 3 |
| 2020 | 4 | 14 |
| 2021 | 2 | 7 |
| 2022 | 4 | 10 |
| 2023 | 3 | 10 |
| 2024 | 4 | 4 |
| 2025 | 5 | 4 |
| 2026 | 4 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for manufacturing a metallic functional part delimiting a porous filtering medium, using an additive manufacturing method, and obtained functional part25 Aug 2026US 12,714,960 B2Commissariat A L' Energie Atomique Et Aux Energies Alternatives
- High filtration efficiency particulate filters having bimodal pore size distribution made from beads with open porosity11 Aug 2026US 12,702,946 B2Corning Incorporated
- Methods and systems for reducing contaminants in a feed stream27 Jan 2026US 12,533,615 B2Marathon Petroleum Company LP
- Filter holding device, developing device, process cartridge, and image forming apparatus27 Jan 2026US 12,533,617 B2Ricoh Company, Ltd.
- Filter holding device, developing device, process cartridge, and image forming apparatus30 Dec 2025US 12,508,527 B2Ricoh Company, Ltd.
- Honeycomb filter4 Dec 2025US 2025/0369376 A1NGK Insulators, Ltd.
- Method for manufacturing a metallic functional part delimiting a porous filtering medium, using an additive manufacturing method, and obtained functional part12 Jun 2025US 2025/0186918 A1Commissariat A L' Energie Atomique Et Aux Energies Alternatives
- Method for manufacturing a metallic functional part delimiting a porous filtering medium, using an additive manufacturing method, and obtained functional part12 Jun 2025US 2025/0186919 A1Commisssariat A L'Energie Atomique Et Aux Energies Alternatives
- Porous membrane, porous membrane laminate, and method of manufacturing porous membrane3 Apr 2025US 2025/0108340 A1Sumitomo Electric Fine Polymer, Inc.
- Methods and systems for reducing contaminants in a feed stream5 Dec 2024US 2024/0399279 A1Marathon Petroleum Company LP
Most cited
By later US patents
- Filter having a change indicator131US 6,110,260 A3M Innovative Properties Company · 2000
- Multi-functional filter for removing contaminants from an enclosure94US 6,395,073 B1Gore Enterprise Holdings, Inc. · 2002
- Air induction filter assembly92US 6,464,761 B1Visteon Global Technologies, Inc. · 2002
- Liquid-gas separator87US 4,878,929 ANelson Industries, Inc. · 1989
- Multistage micronic in-line after-air filter86US 4,704,143 A1987