B01D 71/34
Polyvinylidene fluoride
B01D71/34 (Polyvinylidene fluoride) appears on 515 US grants and 733 published applications in this corpus.
Search patents in B01D- Granted patents
- 515
- Published applications
- 733
- Assignees
- 375
- Inventors
- 1,773
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 4 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 6 | 0 |
| 1990 | 3 | 0 |
| 1991 | 5 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 5 | 0 |
| 1996 | 6 | 0 |
| 1997 | 3 | 0 |
| 1998 | 4 | 0 |
| 1999 | 2 | 0 |
| 2000 | 11 | 0 |
| 2001 | 1 | 0 |
| 2002 | 3 | 5 |
| 2003 | 5 | 14 |
| 2004 | 4 | 15 |
| 2005 | 3 | 20 |
| 2006 | 8 | 18 |
| 2007 | 8 | 19 |
| 2008 | 7 | 17 |
| 2009 | 9 | 18 |
| 2010 | 19 | 27 |
| 2011 | 12 | 19 |
| 2012 | 12 | 22 |
| 2013 | 9 | 29 |
| 2014 | 12 | 31 |
| 2015 | 22 | 45 |
| 2016 | 27 | 33 |
| 2017 | 26 | 33 |
| 2018 | 23 | 45 |
| 2019 | 27 | 52 |
| 2020 | 34 | 52 |
| 2021 | 43 | 44 |
| 2022 | 32 | 43 |
| 2023 | 31 | 45 |
| 2024 | 27 | 30 |
| 2025 | 22 | 34 |
| 2026 | 19 | 23 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Bioprocess with reduced fouling on surfaces15 Sep 2026US 12,734,465 B2Nutrition & Biosciences USA 1, LLC
- Point of use or point of dispense filter with multiple pleat packs15 Sep 2026US 12,734,488 B2Entegris, Inc.
- Cell retention device18 Aug 2026US 12,708,876 B2Sunflower Therapeutics, PBC
- Method for preparing durable hydrophilic ultrafiltration membrane11 Aug 2026US 12,702,955 B2Tiangong University
- Method for producing treatment liquid4 Aug 2026US 12,698,454 B2FUJIFILM Corporation
- Conductive hollow fiber membrane and preparation method thereof and membrane assembly24 Sep 2026US 2026/0284601 A1Cangzhou Institute of Tiangong University
- Polyamide-based mixed matrix membrane for oil-water separation24 Sep 2026US 2026/0286076 A1King Fahd University of Petroleum and Minerals
- Integrated fluidic devices and related methods17 Sep 2026US 2026/0273523 A1HelixBind, Inc.
- Process for the degradation of per- and polyfluorinated substances (pfas) using catalytic ozonolysis17 Sep 2026US 2026/0274720 A1The Board of Trustees of The University of Alabama
- Bioreactor with membrane filtration and methods for treating wastewater10 Sep 2026US 2026/0265098 A1Bl Technologies, Inc.
Most cited
By later US patents
- Melt-blown fibrous web1,019US 5,582,907 APall Corporation · 1996
- Processes of making a porous membrane material from polyvinylidene fluoride, and products142US 4,203,848 AMillipore Corporation · 1980
- Hollow fiber membrane and braided tubular support therefor135US 6,354,444 B1Zenon Environmental Inc. · 2002
- Porous membranes124US 6,395,325 B1SciMed Life Systems, Inc. · 2002
- Highly porous polyvinylidene difluoride membranes115US 6,146,747 AUSF Filtration and Separations Group, Inc. · 2000