B01D 2323/21837
Amides
B01D2323/21837 (Amides) appears on 9 US grants and 20 published applications in this corpus.
Search patents in B01D- Granted patents
- 9
- Published applications
- 20
- Assignees
- 10
- Inventors
- 34
- Latest grant
- 28 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 2 |
| 2020 | 0 | 3 |
| 2021 | 3 | 3 |
| 2022 | 1 | 0 |
| 2023 | 0 | 3 |
| 2024 | 1 | 0 |
| 2025 | 3 | 6 |
| 2026 | 0 | 2 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Hollow fibres28 Oct 2025US 12,454,773 B2IP Ventures GmbH
- Filtration apparatus containing graphene oxide membrane26 Aug 2025US 12,397,268 B2Via Separations, Inc.
- Durable graphene oxide membranes15 Jul 2025US 12,357,950 B2Via Separations, Inc.
- Monolayer, composite, gas separation material, filter, gas separation device and method for manufacturing composite29 Oct 2024US 12,128,366 B2Jccl, Inc.
- Durable graphene oxide membranes15 Nov 2022US 11,498,034 B2Via Separations, Inc.
- Filtration apparatus containing graphene oxide membrane25 Jun 2026US 2026/0175179 A1Via Separations, Inc.
- Durable graphene oxide membranes7 May 2026US 2026/0124586 A1Via Separations, Inc.
- Method for modifying polymer membrane, modified polymer membrane, and filtration device25 Dec 2025US 2025/0387760 A1Alioth Biotech (Shanghai) Co., Ltd.
- Graphene oxide membranes comprising sulfonated support27 Nov 2025US 2025/0360466 A1
- Hollow fibres24 Apr 2025US 2025/0129521 A1Kalvotech Limited
Most cited
By later US patents
- Durable graphene oxide membranes5US 11,097,227 B2Via Separations, Inc. · 2021
- Filtration apparatus containing graphene oxide membrane5US 11,123,694 B2Via Separations, Inc. · 2021
- Monolayer, composite, gas separation material, filter, gas separation device and method for manufacturing composite3US 10,981,122 B2Kyushu University, National University Corporation · 2021
- Durable graphene oxide membranes3US 11,498,034 B2Via Separations, Inc. · 2022
- Separation membrane for blood processing and blood processing apparatus having the membrane installed therein1US 9,956,334 B2Asahi Kasei Medical Co., Ltd. · 2018