B01D 2323/21839
Polymeric additives
B01D2323/21839 (Polymeric additives) appears on 71 US grants and 144 published applications in this corpus.
Search patents in B01D- Granted patents
- 71
- Published applications
- 144
- Assignees
- 94
- Inventors
- 423
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2011 | 0 | 1 |
| 2012 | 0 | 1 |
| 2013 | 2 | 1 |
| 2014 | 0 | 7 |
| 2015 | 0 | 4 |
| 2016 | 3 | 6 |
| 2017 | 2 | 9 |
| 2018 | 8 | 7 |
| 2019 | 6 | 9 |
| 2020 | 6 | 11 |
| 2021 | 2 | 16 |
| 2022 | 8 | 8 |
| 2023 | 2 | 12 |
| 2024 | 11 | 19 |
| 2025 | 15 | 20 |
| 2026 | 6 | 13 |
By publication year. 2026 runs to 8 Oct.
Subgroups
Granted patents
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.
- Hollow fiber and a process for preparation thereof21 Jul 2026US 12,685,972 B2E. & J. Gallo Winery
- High flux nanofiltration membrane2 Jun 2026US 12,643,075 B1King Fahd University of Petroleum and Minerals
- Raw-material liquid concentration system and concentration apparatus10 Mar 2026US 12,569,811 B2Asahi Kasei Kabushiki Kaisha
- Hollow fiber and a process for preparation thereof10 Sep 2026US 2026/0264024 A1
- 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.
- Composite semipermeable membrane, composite semipermeable membrane module, fluid separation device, and method for producing composite semipermeable membrane6 Aug 2026US 2026/0225045 A1Toray Industries, Inc.
- Semipermeable membrane and semipermeable membrane module30 Jul 2026US 2026/0216670 A1Toyobo Co., Ltd.
Most cited
By later US patents
- Fluoropolymer hollow fiber membrane with fluoro-copolymer and fluoro-terpolymer bonded end portion(s) and method to fabricate5US 8,540,081 B2Markel Corporation · 2013
- Separation membrane, method of producing the same and separation membrane module using the separation membrane5US 8,613,361 B2Toray Industries, Inc. · 2013
- Porous membrane, blood purifying module incorporating porous membrane, and method for producing porous membrane4US 9,993,777 B2Toray Industries, Inc. · 2018
- Hollow fiber membrane for filtration of liquids3US 11,148,100 B2Pak Vitae (Private) Limited · 2021
- Porous asymmetric polyphenylene ether membranes and associated separation modules and methods2US 10,252,221 B2Sabic Global Technologies B.V. · 2019