B01D 2323/2182
Organic additives
B01D2323/2182 (Organic additives) appears on 155 US grants and 291 published applications in this corpus.
Search patents in B01D- Granted patents
- 155
- Published applications
- 291
- Assignees
- 164
- Inventors
- 807
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 2 | 1 |
| 2014 | 0 | 8 |
| 2015 | 2 | 8 |
| 2016 | 6 | 14 |
| 2017 | 4 | 18 |
| 2018 | 14 | 18 |
| 2019 | 12 | 29 |
| 2020 | 19 | 26 |
| 2021 | 15 | 28 |
| 2022 | 14 | 15 |
| 2023 | 10 | 29 |
| 2024 | 18 | 31 |
| 2025 | 25 | 40 |
| 2026 | 14 | 24 |
By publication year. 2026 runs to 8 Oct.
Subgroups
Granted patents
- B01D 2323/21839Polymeric additivesIndexing code71
- B01D 2323/21827SaltsIndexing code33
- B01D 2323/21834AminesIndexing code31
- B01D 2323/21826AcidsIndexing code22
- B01D 2323/21823Alcohols or hydroxydesIndexing code10
- B01D 2323/21837AmidesIndexing code9
- B01D 2323/2183EthersIndexing code8
- B01D 2323/21829AcrylatesIndexing code6
Recent patents
- Membrane permeate recycle with pressurized anaerobic digesters15 Sep 2026US 12,734,475 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Oil-water separation systems and methods of separating aqueous emulsions15 Sep 2026US 12,734,486 B2Aculon, Inc.
- Surface-treated porous materials having filtration properties and methods of preparing them18 Aug 2026US 12,708,879 B2Aculon, Inc.
- Method for producing a gas separation membrane28 Jul 2026US 12,691,417 B2Kerionics, S.L.
- Hollow fiber and a process for preparation thereof21 Jul 2026US 12,685,972 B2E. & J. Gallo Winery
- Conductive hollow fiber membrane and preparation method thereof and membrane assembly24 Sep 2026US 2026/0284601 A1Cangzhou Institute of Tiangong University
- Hollow fiber and a process for preparation thereof10 Sep 2026US 2026/0264024 A1
- Separation methods and systems13 Aug 2026US 2026/0233170 A1Altr Fltr Inc.
- Hollow fiber membrane, method for manufacturing hollow fiber membrane, and hollow fiber membrane module6 Aug 2026US 2026/0225043 A1Toray Industries, Inc.
- Hollow fiber membrane and hollow fiber membrane module6 Aug 2026US 2026/0225044 A1Toray Industries, Inc.
Most cited
By later US patents
- Multilayer polymeric membrane11US 10,363,546 B2Liso Plastics, L.L.C. · 2019
- Zwitterion-functionalized block copolymer membranes and associated block copolymer composition7US 9,440,198 B2General Electric Company · 2016
- Durable graphene oxide membranes5US 11,097,227 B2Via Separations, Inc. · 2021
- Filtration apparatus containing graphene oxide membrane5US 11,123,694 B2Via Separations, Inc. · 2021
- Fluoropolymer hollow fiber membrane with fluoro-copolymer and fluoro-terpolymer bonded end portion(s) and method to fabricate5US 8,540,081 B2Markel Corporation · 2013