B01D 2239/1216
Pore size
B01D2239/1216 (Pore size) appears on 500 US grants and 783 published applications in this corpus.
Search patents in B01D- Granted patents
- 500
- Published applications
- 783
- Assignees
- 428
- Inventors
- 1,728
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 10 | 0 |
| 1996 | 2 | 0 |
| 1997 | 14 | 0 |
| 1998 | 13 | 0 |
| 1999 | 7 | 0 |
| 2000 | 9 | 0 |
| 2001 | 6 | 2 |
| 2002 | 6 | 10 |
| 2003 | 6 | 9 |
| 2004 | 7 | 10 |
| 2005 | 2 | 3 |
| 2006 | 3 | 6 |
| 2007 | 3 | 9 |
| 2008 | 3 | 7 |
| 2009 | 8 | 10 |
| 2010 | 8 | 14 |
| 2011 | 6 | 21 |
| 2012 | 8 | 22 |
| 2013 | 7 | 18 |
| 2014 | 11 | 17 |
| 2015 | 12 | 20 |
| 2016 | 14 | 24 |
| 2017 | 9 | 22 |
| 2018 | 10 | 39 |
| 2019 | 27 | 49 |
| 2020 | 32 | 61 |
| 2021 | 34 | 99 |
| 2022 | 35 | 86 |
| 2023 | 42 | 79 |
| 2024 | 46 | 60 |
| 2025 | 33 | 46 |
| 2026 | 40 | 40 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System and method for ice bath filtering22 Sep 2026US 12,741,241 B2Lowtemp Industries LLC
- Flue gas filtration media8 Sep 2026US 12,728,374 B2Ahlstrom Oyj
- Two stage filter cartridge with an expandable frame facilitating replacement of the filter media1 Sep 2026US 12,722,105 B2Nanodocks Technology Limited
- High efficiency synthetic filter media1 Sep 2026US 12,722,107 B2Knowlton Technologies, LLC
- Melt-blown nonwoven fabric, method of producing the same, layered body, filter for face mask, and face mask25 Aug 2026US 12,716,153 B2Kaneka Corporation
- Multifunctional filter materials8 Oct 2026US 2026/0305741 A1Khalifa University of Science and Technology
- Method of filtration of particulated systems with injection of nanobubbles, and, use8 Oct 2026US 2026/0306978 A1Universidade Federal Do Rio Grande Do Sul—Ufrgs
- System and method for deaeration1 Oct 2026US 2026/0295469 A1Donaldson Company, Inc.
- Method for preparing a composite filter medium and the composite filter medium obtained with this method1 Oct 2026US 2026/0295484 A1Saati S.P.A.
- Composite materials3 Sep 2026US 2026/0257159 A1DelStar Technologies, Inc.
Most cited
By later US patents
- Deformable well screen320US 5,901,789 AShell Oil Company · 1999
- Blood separation device comprising a filter and a capillary flow pathway exiting the filter254US 4,753,776 ABiotrack, Inc. · 1988
- Deformable well screen218US 6,012,522 AShell Oil Company · 2000
- Blood separation device comprising a filter and a capillary flow pathway exiting the filter191US 5,135,719 ABiotrack, Inc. · 1992
- Post-treatment of nonwoven webs153US 5,244,482 AThe University of Tennessee Research Corporation · 1993