B01D 69/1251
By interfacial polymerisation
Official title: {by interfacial polymerisation}
B01D69/1251 (By interfacial polymerisation) appears on 372 US grants and 487 published applications in this corpus.
Search patents in B01D- Granted patents
- 372
- Published applications
- 487
- Assignees
- 210
- Inventors
- 1,114
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 12 | 0 |
| 1989 | 15 | 0 |
| 1990 | 8 | 0 |
| 1991 | 3 | 0 |
| 1992 | 12 | 0 |
| 1993 | 10 | 0 |
| 1994 | 4 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 7 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 2 | 1 |
| 2002 | 4 | 3 |
| 2003 | 3 | 6 |
| 2004 | 5 | 3 |
| 2005 | 4 | 0 |
| 2006 | 3 | 2 |
| 2007 | 0 | 2 |
| 2008 | 0 | 12 |
| 2009 | 1 | 5 |
| 2010 | 2 | 12 |
| 2011 | 3 | 4 |
| 2012 | 4 | 14 |
| 2013 | 5 | 22 |
| 2014 | 11 | 28 |
| 2015 | 14 | 32 |
| 2016 | 13 | 29 |
| 2017 | 20 | 40 |
| 2018 | 20 | 25 |
| 2019 | 17 | 26 |
| 2020 | 18 | 28 |
| 2021 | 25 | 34 |
| 2022 | 14 | 20 |
| 2023 | 14 | 35 |
| 2024 | 33 | 49 |
| 2025 | 25 | 35 |
| 2026 | 18 | 20 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method of preparing reverse osmosis membrane with charged hydrogel and polyamide double network8 Sep 2026US 12,728,388 B2
- Composite semipermeable membrane, spiral membrane element, water treatment system, and water treatment method18 Aug 2026US 12,708,880 B2Nitto Denko Corporation
- Thin-film composite membranes synthesized by multi-step coating methods18 Aug 2026US 12,708,881 B2Katholieke Universiteit Leuven
- Method for preparing a novel guanidine-based composite nanofiltration flat-sheet membrane21 Jul 2026US 12,685,969 B2Tongji University
- Hollow fiber and a process for preparation thereof21 Jul 2026US 12,685,972 B2E. & J. Gallo Winery
- Conductive forward osmosis membrane and preparation method thereof8 Oct 2026US 2026/0307018 A1Beijing Baoshengtong International Electrical Engineering Technology Co., Ltd.
- Contorted polyamide membranes and methods of use thereof8 Oct 2026US 2026/0307019 A1University of Houston System
- Conductive base membrane and preparation method thereof24 Sep 2026US 2026/0284606 A1Beijing Baoshengtong International Electrical Engineering Technology Co., Ltd.
- High-pressure reverse osmosis membrane based on pectin-assisted interfacial polymerization and preparation method therefor17 Sep 2026US 2026/0273475 A1Shandong Industrial Institute of Seawater Desalination and Multipurpose Utilization
- Acid-resistant and alkali-resistant composite nanofiltration membrane, and preparation method therefor and use thereof17 Sep 2026US 2026/0273478 A1China Petroleum & Chemical Corporation
Most cited
By later US patents
- Functional, photochemically active, and chemically asymmetric membranes by interfacial polymerization of derivatized multifunctional prepolymers410US 4,784,736 ABend Research, Inc. · 1988
- Functional, photochemically active, and chemically asymmetric membranes by interfacial polymerization of derivatized multifunctional prepolymers370US 4,917,800 ABend Research, Inc. · 1990
- Interfacially synthesized reverse osmosis membrane312US 4,277,344 AFilmtec Corporation · 1981
- Filtration membranes, and related nano and/or micro fibers, composites, methods and systems254US 10,532,330 B2California Institute of Technology · 2020
- Semipermeable thin-film membranes comprising siloxane, alkoxysilyl and aryloxysilyl oligomers and copolymers146US 4,781,733 ABend Research, Inc. · 1988