B01D 61/145
Ultrafiltration
Official title: {Ultrafiltration}
B01D61/145 (Ultrafiltration) appears on 1,530 US grants and 1,893 published applications in this corpus.
Search patents in B01D- Granted patents
- 1,530
- Published applications
- 1,893
- Assignees
- 1,224
- Inventors
- 4,893
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 12 | 0 |
| 1977 | 9 | 0 |
| 1978 | 16 | 0 |
| 1979 | 5 | 0 |
| 1980 | 14 | 0 |
| 1981 | 8 | 0 |
| 1982 | 9 | 0 |
| 1983 | 9 | 0 |
| 1984 | 8 | 0 |
| 1985 | 10 | 0 |
| 1986 | 12 | 0 |
| 1987 | 17 | 0 |
| 1988 | 21 | 0 |
| 1989 | 14 | 0 |
| 1990 | 21 | 0 |
| 1991 | 18 | 0 |
| 1992 | 21 | 0 |
| 1993 | 22 | 0 |
| 1994 | 16 | 0 |
| 1995 | 22 | 0 |
| 1996 | 32 | 0 |
| 1997 | 15 | 0 |
| 1998 | 21 | 0 |
| 1999 | 28 | 0 |
| 2000 | 22 | 0 |
| 2001 | 35 | 5 |
| 2002 | 34 | 35 |
| 2003 | 19 | 46 |
| 2004 | 30 | 55 |
| 2005 | 22 | 52 |
| 2006 | 27 | 39 |
| 2007 | 33 | 47 |
| 2008 | 26 | 43 |
| 2009 | 14 | 49 |
| 2010 | 19 | 47 |
| 2011 | 27 | 42 |
| 2012 | 28 | 59 |
| 2013 | 33 | 59 |
| 2014 | 29 | 55 |
| 2015 | 53 | 76 |
| 2016 | 34 | 72 |
| 2017 | 39 | 115 |
| 2018 | 65 | 88 |
| 2019 | 74 | 106 |
| 2020 | 78 | 112 |
| 2021 | 73 | 112 |
| 2022 | 71 | 124 |
| 2023 | 75 | 134 |
| 2024 | 67 | 128 |
| 2025 | 70 | 102 |
| 2026 | 53 | 91 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Tetraazadodecane based chelating agents for separation of rare earth elements and method therefor6 Oct 2026US 12,752,219 B2Ustav Organicke Chemie A Biochemie Av Cr, V. V. I.
- Eco-friendly membranes for separations6 Oct 2026US 12,752,241 B2Khalifa University of Science and Technology
- Vessel, system, and associated method for product concentration29 Sep 2026US 12,746,513 B2Repligen Corporation
- 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.
- Concentrated milk protein preparations8 Oct 2026US 2026/0305634 A150G Inc.
- Modified polyvinylidene fluoride membranes for water filtration8 Oct 2026US 2026/0307011 A1Uchicago Argonne, LLC
- Systems, Methods, and Apparatuses for Producing and Packaging Medical Fluids8 Oct 2026US 2026/0307835 A1
- Method for isolating fetuin-a8 Oct 2026US 2026/0308213 A1PreviPharma GmbH
- Sugar liquid production system1 Oct 2026US 2026/0295551 A1Seiko Epson Corporation
Most cited
By later US patents
- Asymmetric membranes315US 4,629,563 ABrunswick Corporation · 1986
- Hemofiltration and plasmafiltration devices and methods308US 5,919,369 AHemocleanse, Inc. · 1999
- Process for preparing hydrophilic polyamide membrane filter media and product277US 4,340,479 APall Corporation · 1982
- Blood collection and processing system252US 5,100,564 APall Corporation · 1992
- Device for concentrating plasma235US 6,010,627 AQuantic Biomedical Partners · 2000