B01D 61/147
Microfiltration
Official title: {Microfiltration}
B01D61/147 (Microfiltration) appears on 973 US grants and 1,150 published applications in this corpus.
Search patents in B01D- Granted patents
- 973
- Published applications
- 1,150
- Assignees
- 807
- Inventors
- 3,107
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 3 | 0 |
| 1983 | 5 | 0 |
| 1984 | 6 | 0 |
| 1985 | 1 | 0 |
| 1986 | 8 | 0 |
| 1987 | 9 | 0 |
| 1988 | 14 | 0 |
| 1989 | 8 | 0 |
| 1990 | 11 | 0 |
| 1991 | 11 | 0 |
| 1992 | 11 | 0 |
| 1993 | 26 | 0 |
| 1994 | 14 | 0 |
| 1995 | 15 | 0 |
| 1996 | 27 | 0 |
| 1997 | 14 | 0 |
| 1998 | 16 | 0 |
| 1999 | 21 | 0 |
| 2000 | 15 | 0 |
| 2001 | 27 | 2 |
| 2002 | 26 | 28 |
| 2003 | 21 | 27 |
| 2004 | 25 | 48 |
| 2005 | 17 | 35 |
| 2006 | 15 | 36 |
| 2007 | 28 | 43 |
| 2008 | 18 | 31 |
| 2009 | 12 | 42 |
| 2010 | 15 | 36 |
| 2011 | 24 | 41 |
| 2012 | 25 | 35 |
| 2013 | 23 | 36 |
| 2014 | 23 | 35 |
| 2015 | 21 | 56 |
| 2016 | 22 | 45 |
| 2017 | 20 | 54 |
| 2018 | 38 | 61 |
| 2019 | 44 | 53 |
| 2020 | 49 | 56 |
| 2021 | 47 | 70 |
| 2022 | 40 | 74 |
| 2023 | 39 | 64 |
| 2024 | 45 | 61 |
| 2025 | 44 | 49 |
| 2026 | 22 | 32 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Preparation method for iron phosphate powder by microporous filtration and concentration and preparation device thereof6 Oct 2026US 12,753,078 B2Zhejiang Dong'ou Filtering Machinery Manufacturing Co., Ltd.
- Fluid filtration device29 Sep 2026US 12,746,512 B2PathOtrak, LLC
- circCDK13-enriched engineered small extracellular vesicle (E-sEV), and preparation method and use thereof22 Sep 2026US 12,740,945 B2Chinese Pla General Hospital
- Purification of oligosaccharides from a fermentation broth by using filtration15 Sep 2026US 12,735,443 B2Chr. Hansen A/S
- Preparation method of milk oligosaccharides and oligosaccharide powder and food prepared thereby15 Sep 2026US 12,735,512 B2Beijing Sanyuan Foods Co., Ltd.
- Method for producing bioethanol and device for producing bioethanol8 Oct 2026US 2026/0308643 A1ARKHE Co., Ltd.
- Compact spiral-wound filter elements, modules and systems24 Sep 2026US 2026/0284600 A1EMD Millipore Corporation
- Treated microporous membrane24 Sep 2026US 2026/0284603 A1PPG Industries Ohio, Inc.
- Manufacturing method with feedback control24 Sep 2026US 2026/0286269 A1Chr. Hansen A/S
- Methods of reducing the enzymatic hydrolysis activity rate in a composition obtained from a purification platform17 Sep 2026US 2026/0274889 A1Genentech, Inc.
Most cited
By later US patents
- Asymmetric membranes315US 4,629,563 ABrunswick Corporation · 1986
- Fluid separation and delivery apparatus and method279US 6,852,219 B22005
- Device and method for separating plasma from a biological fluid268US 5,601,727 APall Corporation · 1997
- Blood collection and processing system252US 5,100,564 APall Corporation · 1992
- Extrusion technique for producing unilamellar vesicles244US 5,008,050 AThe Liposome Company, Inc. · 1991