B01D 67/00
Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
B01D67/00 (Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus) appears on 5,636 US grants and 6,432 published applications in this corpus.
Search patents in B01D- Granted patents
- 5,636
- Published applications
- 6,432
- Assignees
- 2,316
- Inventors
- 13,367
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 24 | 0 |
| 1977 | 25 | 0 |
| 1978 | 34 | 0 |
| 1979 | 18 | 0 |
| 1980 | 27 | 0 |
| 1981 | 34 | 0 |
| 1982 | 24 | 0 |
| 1983 | 16 | 0 |
| 1984 | 30 | 0 |
| 1985 | 18 | 0 |
| 1986 | 42 | 0 |
| 1987 | 66 | 0 |
| 1988 | 68 | 0 |
| 1989 | 103 | 0 |
| 1990 | 104 | 0 |
| 1991 | 93 | 0 |
| 1992 | 96 | 0 |
| 1993 | 94 | 0 |
| 1994 | 68 | 0 |
| 1995 | 60 | 0 |
| 1996 | 62 | 0 |
| 1997 | 84 | 0 |
| 1998 | 92 | 0 |
| 1999 | 108 | 0 |
| 2000 | 85 | 0 |
| 2001 | 91 | 25 |
| 2002 | 81 | 92 |
| 2003 | 84 | 156 |
| 2004 | 78 | 176 |
| 2005 | 77 | 196 |
| 2006 | 83 | 202 |
| 2007 | 105 | 209 |
| 2008 | 93 | 213 |
| 2009 | 112 | 243 |
| 2010 | 149 | 258 |
| 2011 | 149 | 228 |
| 2012 | 174 | 258 |
| 2013 | 171 | 255 |
| 2014 | 183 | 262 |
| 2015 | 172 | 342 |
| 2016 | 192 | 335 |
| 2017 | 226 | 293 |
| 2018 | 221 | 288 |
| 2019 | 218 | 304 |
| 2020 | 253 | 351 |
| 2021 | 251 | 323 |
| 2022 | 219 | 304 |
| 2023 | 198 | 303 |
| 2024 | 241 | 319 |
| 2025 | 210 | 275 |
| 2026 | 130 | 222 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Eco-friendly membranes for separations6 Oct 2026US 12,752,241 B2Khalifa University of Science and Technology
- Method for drying separation membrane and method for producing separation membrane structure6 Oct 2026US 12,752,242 B2NGK Insulators, Ltd.
- Cross-linked mineral membranes6 Oct 2026US 12,752,244 B2Uchicago Argonne, LLC
- Method of forming a cross-linked polymeric membrane29 Sep 2026US 12,746,516 B2Seppure Pte Ltd
- Carbon molecular sieve membranes based on oxygen-free polymeric precursors22 Sep 2026US 12,741,250 B2King Abdullah University of Science and Technology
- Ion exchange membrane8 Oct 2026US 2026/0307020 A1Khalifa University of Science and Technology
- Nature-inspired stalactite nanostructures such as nanopores for biosensing and energy harvesting8 Oct 2026US 2026/0309692 A1Ecole Polytechnique Federale De Lausanne (Epfl)
- Purge device and production method for separation membrane1 Oct 2026US 2026/0295514 A1Mitsubishi Heavy Industries, Ltd.
- Pillared clay mineral membranes1 Oct 2026US 2026/0295541 A1The University of Chicago
- Compact spiral-wound filter elements, modules and systems24 Sep 2026US 2026/0284600 A1EMD Millipore Corporation
Most cited
By later US patents
- Treating hydrophobic filters to render them hydrophilic1,164US 4,525,374 AManresa, Inc. · 1985
- Mesoscale polynucleotide amplification devices1,091US 5,587,128 AThe Trustees of the University of Pennsylvania · 1996
- Mesoscale polynucleotide amplification device and method1,042US 5,498,392 AThe Trustees of the University of Pennsylvania · 1996
- Mesoscale sample preparation device and systems for determination and processing of analytes678US 5,726,026 AThe Trustees of the University of Pennsylvania · 1998
- Porous microfabricated polymer membrane structures460US 5,807,406 ABaxter International Inc. · 1998