B01D 39/1638
The material being particulate
Official title: {the material being particulate}
B01D39/1638 (The material being particulate) appears on 136 US grants and 160 published applications in this corpus.
Search patents in B01D- Granted patents
- 136
- Published applications
- 160
- Assignees
- 117
- Inventors
- 425
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 7 | 0 |
| 1998 | 6 | 0 |
| 1999 | 5 | 0 |
| 2000 | 4 | 0 |
| 2001 | 4 | 0 |
| 2002 | 1 | 4 |
| 2003 | 3 | 6 |
| 2004 | 2 | 5 |
| 2005 | 2 | 6 |
| 2006 | 3 | 11 |
| 2007 | 3 | 6 |
| 2008 | 4 | 6 |
| 2009 | 2 | 4 |
| 2010 | 4 | 6 |
| 2011 | 4 | 8 |
| 2012 | 6 | 3 |
| 2013 | 2 | 7 |
| 2014 | 3 | 5 |
| 2015 | 2 | 8 |
| 2016 | 6 | 6 |
| 2017 | 0 | 6 |
| 2018 | 2 | 5 |
| 2019 | 3 | 11 |
| 2020 | 3 | 4 |
| 2021 | 9 | 10 |
| 2022 | 5 | 11 |
| 2023 | 6 | 6 |
| 2024 | 7 | 6 |
| 2025 | 2 | 7 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- High efficiency synthetic filter media1 Sep 2026US 12,722,107 B2Knowlton Technologies, LLC
- Coating solution14 Jul 2026US 12,678,767 B2Nittetsu Mining Co., Ltd.
- Filter, metal ion removal method, and metal ion removal device13 Jan 2026US 12,522,519 B2Thermo Fisher Bioprocessing Inc.
- Air purification filter and air purifier including same9 Sep 2025US 12,409,458 B2LG Electronics Inc.
- Activated hemp filters and method of making activated hemp filters27 May 2025US 12,311,295 B2Hemp-Shire LLC
- Water Filter System and Method18 Jun 2026US 2026/0166452 A1
- Vacuum cleaner filter bag and method for preparing the vacuum cleaner filter bag11 Jun 2026US 2026/0158426 A1Essilor International
- Hydrophobic filter medium12 Feb 2026US 2026/0042043 A1
- Filter media, triboelectrically charged fibers thereof, and methods for the same6 Nov 2025US 2025/0339799 A1DelStar Technologies, Inc.
- Process and Device for Removing Contaminants from a Fluid Stream30 Oct 2025US 2025/0332571 A1Celanese International Corporation
Most cited
By later US patents
- Highly porous polyvinylidene difluoride membranes115US 6,146,747 AUSF Filtration and Separations Group, Inc. · 2000
- Method and apparatus for the continuous extrusion of solid articles98US 5,189,092 AKoslow Technologies Corporation · 1993
- Methods and devices for the separation of plasma or serum from whole blood97US 4,933,092 AAbbott Laboratories · 1990
- Sintered spherical plastic bead prepack screen aggregate85US 5,339,895 AHalliburton Company · 1994
- Storm drain systems for filtering trash and hydrocarbons80US 6,080,307 AAbTech Industries, Inc. · 2000