B01D 2323/21828
Ammonium salts
Official title: Ammonium Salts
B01D2323/21828 (Ammonium salts) appears on 9 US grants and 17 published applications in this corpus.
Search patents in B01D- Granted patents
- 9
- Published applications
- 17
- Assignees
- 15
- Inventors
- 63
- Latest grant
- 31 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2016 | 0 | 1 |
| 2017 | 0 | 2 |
| 2018 | 1 | 1 |
| 2019 | 1 | 3 |
| 2020 | 1 | 5 |
| 2021 | 1 | 2 |
| 2022 | 0 | 0 |
| 2023 | 3 | 1 |
| 2024 | 1 | 2 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Crosslinked facilitated transport membrane for hydrogen purification from coal-derived syngas31 Mar 2026US 12,589,363 B2Ohio State Innovation Foundation
- Fouling-resistant reverse osmosis membrane, method for producing same, and fouling-resistant reverse osmosis module including same10 Sep 2024US 12,083,481 B2Toray Advanced Materials Korea Inc.
- Functional fibrous membrane, method for manufacturing the same, filter comprising the same8 Aug 2023US 11,717,793 B2King's Flair Development Ltd.
- Method of preparing hierarchical porous channel molecular sieve membrane and application thereof17 Jan 2023US 11,554,348 B2Nanjing University of Technology
- Supported zeolite films and methods for preparing17 Jan 2023US 11,554,359 B2ZeoMem Sweden AB
- Method for preserving composite semipermeable membrane, preservation solution, and spiral membrane element20 Jun 2024US 2024/0198292 A1Nitto Denko Corporation
- Polymeric composite membranes having oriented nanochannels and methods of making the same22 Feb 2024US 2024/0058767 A1The Trustees of the University of Pennsylvania
- Crosslinked facilitated transport membrane for hydrogen purification from coal-derived syngas15 Jun 2023US 2023/0182089 A1Ohio State Innovation Foundation
- Fouling-resistant reverse osmosis membrane, method for producing same, and fouling-resistant reverse osmosis module including same23 Sep 2021US 2021/0291119 A1Toray Advanced Materials Korea Inc.
- Selectively permeable graphene oxide membrane for dehydration of a gas2 Sep 2021US 2021/0268430 A1Nitto Denko Corporation
Most cited
By later US patents
- Filtration medium sequence for biomaterial purification2US 10,722,848 B23M Innovative Properties Company · 2020
- Membranes for gas separation1US 10,213,747 B2Ohio State Innovation Foundation · 2019
- Method of preparing hierarchical porous channel molecular sieve membrane and application thereof1US 11,554,348 B2Nanjing University of Technology · 2023