B01D 2239/0478
On a layer of the filter
Official title: on a layer of the filter
B01D2239/0478 (On a layer of the filter) appears on 360 US grants and 498 published applications in this corpus.
Search patents in B01D- Granted patents
- 360
- Published applications
- 498
- Assignees
- 331
- Inventors
- 1,313
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 2 | 0 |
| 1987 | 5 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 5 | 0 |
| 1992 | 9 | 0 |
| 1993 | 7 | 0 |
| 1994 | 5 | 0 |
| 1995 | 8 | 0 |
| 1996 | 5 | 0 |
| 1997 | 6 | 0 |
| 1998 | 7 | 0 |
| 1999 | 9 | 0 |
| 2000 | 8 | 0 |
| 2001 | 6 | 4 |
| 2002 | 7 | 8 |
| 2003 | 5 | 3 |
| 2004 | 7 | 10 |
| 2005 | 2 | 4 |
| 2006 | 3 | 13 |
| 2007 | 1 | 18 |
| 2008 | 6 | 15 |
| 2009 | 10 | 8 |
| 2010 | 3 | 13 |
| 2011 | 6 | 15 |
| 2012 | 7 | 15 |
| 2013 | 6 | 12 |
| 2014 | 8 | 14 |
| 2015 | 8 | 7 |
| 2016 | 6 | 12 |
| 2017 | 7 | 11 |
| 2018 | 5 | 15 |
| 2019 | 9 | 19 |
| 2020 | 10 | 24 |
| 2021 | 9 | 68 |
| 2022 | 20 | 59 |
| 2023 | 22 | 52 |
| 2024 | 26 | 37 |
| 2025 | 38 | 27 |
| 2026 | 26 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Substrate treatments29 Sep 2026US 12,746,490 B2Donaldson Company, Inc.
- Personal protective anti-viral face mask15 Sep 2026US 12,734,378 B2lowa State University Research Foundation, Inc.
- Anti-microbial filter18 Aug 2026US 12,708,690 B2Acell Industries Limited
- Surface-treated porous materials having filtration properties and methods of preparing them18 Aug 2026US 12,708,879 B2Aculon, Inc.
- Oleophobic fluoropolymers and filter materials prepared therefrom28 Jul 2026US 12,692,332 B2Entegris, 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.
- Filter medium, method of producing filter medium, and filter element13 Aug 2026US 2026/0233137 A1Mann+Hummel GmbH
- Extruded netting23 Jul 2026US 2026/0208082 A1DelStar Technologies, Inc.
- Graphene Functionalized HEPA Filter23 Jul 2026US 2026/0208085 A1University of Connecticut
- Method and device for enriching and detecting microorganisms in a biological sample16 Jul 2026US 2026/0199577 A1Micronbrane Medical Co., Ltd.
Most cited
By later US patents
- Device for removal of contaminants from fluid streams235US 5,750,026 ACorning Incorporated · 1998
- Molten metal filtration and distribution device and method for manufacturing the same116US 6,270,717 B1Les Produits Industriels de Haute Temperature Pyrotek Inc. · 2001
- Filter sheet material109US 4,510,193 A1985
- Contact-killing antimicrobial devices104US 5,817,325 ABioPolymerix, Inc. · 1998
- Wrap member having openings89US 5,252,207 APall Corporation · 1993