B01D 71/022
Metals
Official title: {Metals}
B01D71/022 (Metals) appears on 582 US grants and 710 published applications in this corpus.
Search patents in B01D- Granted patents
- 582
- Published applications
- 710
- Assignees
- 447
- Inventors
- 1,761
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 5 | 0 |
| 1994 | 5 | 0 |
| 1995 | 2 | 0 |
| 1996 | 4 | 0 |
| 1997 | 11 | 0 |
| 1998 | 11 | 0 |
| 1999 | 10 | 0 |
| 2000 | 9 | 0 |
| 2001 | 20 | 6 |
| 2002 | 11 | 16 |
| 2003 | 14 | 20 |
| 2004 | 13 | 24 |
| 2005 | 10 | 20 |
| 2006 | 12 | 30 |
| 2007 | 11 | 25 |
| 2008 | 15 | 18 |
| 2009 | 12 | 25 |
| 2010 | 22 | 29 |
| 2011 | 22 | 16 |
| 2012 | 20 | 29 |
| 2013 | 12 | 26 |
| 2014 | 26 | 30 |
| 2015 | 21 | 35 |
| 2016 | 18 | 16 |
| 2017 | 16 | 44 |
| 2018 | 21 | 37 |
| 2019 | 31 | 34 |
| 2020 | 37 | 43 |
| 2021 | 29 | 33 |
| 2022 | 29 | 35 |
| 2023 | 24 | 29 |
| 2024 | 23 | 33 |
| 2025 | 19 | 35 |
| 2026 | 15 | 22 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Membrane assembly for gas separation, method for producing the membrane assembly and method of separating gases15 Sep 2026US 12,734,487 B2Université De Fribourg
- Ruthenium promoter catalyst compositions15 Sep 2026US 12,735,324 B2Commonwealth Scientific and Industrial Research Organisation
- Palladium-based membrane25 Aug 2026US 12,715,767 B2National University of Singapore
- Passivated silver nanoparticle coatings and methods of making the same21 Jul 2026US 12,686,050 B2Arizona Board of Regents on behalf of Arizona State University
- Porous medium with adjustable fluid permeability and associated systems and methods14 Jul 2026US 12,678,743 B2Massachusetts Institute of Technology
- Separation membrane and method for producing same17 Sep 2026US 2026/0273476 A1Hiroshima University
- Devices and methods for removing metal cations from fluids27 Aug 2026US 2026/0249252 A1City University of Hong Kong
- Mixed-matrix metal-organic framework membranes for molecular separations27 Aug 2026US 2026/0249253 A1King Abdullah University of Science and Technology
- Method for manufacturing a free standing membrane and method for forming an electroplated layer using a free standing membrane13 Aug 2026US 2026/0233169 A1Korea Advanced Institute of Science and Technology
- Purification of capsular polysaccharides13 Aug 2026US 2026/0234293 A1Vaxcyte, Inc.
Most cited
By later US patents
- Hydrogen gas-extraction module and method of fabrication341US 6,152,987 AWorcester Polytechnic Institute · 2000
- Steam reformer with internal hydrogen purification269US 5,997,594 ANorthwest Power Systems, LLC · 1999
- Solid multi-component membranes, electrochemical reactor components, electrochemical reactors and use of membranes, reactor components, and reactor for oxidation reactions202US 5,306,411 AThe Standard Oil Company · 1994
- Composite metal membrane175US 5,738,708 AThe Regents of the University of California Office of Technology Transfer · 1998
- Composite hydrogen separation element and module164US 5,645,626 ABend Research, Inc. · 1997