B01D 2323/21833
Esters
B01D2323/21833 (Esters) appears on 3 US grants and 7 published applications in this corpus.
Search patents in B01D- Granted patents
- 3
- Published applications
- 7
- Assignees
- 5
- Inventors
- 29
- Latest grant
- 6 Jul 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2014 | 0 | 1 |
| 2015 | 0 | 1 |
| 2016 | 1 | 1 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 1 | 1 |
| 2020 | 0 | 1 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
By publication year.
Recent patents
- Polyvinylidene fluoride/ultra-high molecular weight polyethylene blend microporous membrane and preparation method thereof6 Jul 2021US 11,052,352 B2Tianjin Polytechnic University
- Zwitterion-functionalized block copolymer membranes and associated block copolymer composition31 Dec 2019US 10,518,227 B2General Electric Company
- Zwitterion-functionalized block copolymer membranes and associated block copolymer composition13 Sep 2016US 9,440,198 B2General Electric Company
- Method for modifying polymer membrane, modified polymer membrane, and filtration device25 Dec 2025US 2025/0387760 A1Alioth Biotech (Shanghai) Co., Ltd.
- Support layers for forward osmosis membranes16 Apr 2020US 2020/0114317 A1Oasys Water, Inc.
- Polyvinylidene Fluoride/Ultra-high Molecular Weight Polyethylene Blend Microporous Membrane and Preparation Method Thereof11 Apr 2019US 2019/0105611 A1Tianjin Polytechnic University
- Zwitterion-functionalized block copolymer membranes and associated block copolymer composition23 Mar 2017US 2017/0080392 A1General Electric Company
- Highly swellable composite polyamide membrane3 Nov 2016US 2016/0317977 A1
Most cited
By later US patents