Method for purifying non-aqueous solvent and method for pretreating ion exchange resin for purification of non-aqueous solvent
US-2022387987-A1 · Dec 8, 2022 · US
containing cationic exchangers · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B01J49/06 |
| Official title | containing cationic exchangers |
| Display label | containing cationic exchangers |
| Total patents | 78 |
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 4 |
| 2016 | 7 |
| 2017 | 10 |
| 2018 | 9 |
| 2019 | 9 |
| 2020 | 4 |
| 2021 | 8 |
| 2022 | 9 |
| 2023 | 4 |
| 2024 | 5 |
| 2025 | 6 |
| 2026 | 3 |
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
US-2022387987-A1 · Dec 8, 2022 · US
US-2022226798-A1 · Jul 21, 2022 · US
US-2022203347-A1 · Jun 30, 2022 · US
US-11253849-B2 · Feb 22, 2022 · US
US-2022048021-A1 · Feb 17, 2022 · US
US-2022048020-A1 · Feb 17, 2022 · US
US-2022025091-A1 · Jan 27, 2022 · US
US-2022024776-A1 · Jan 27, 2022 · US
US-11227698-B2 · Jan 18, 2022 · US
US-2021272711-A1 · Sep 2, 2021 · US
US-2021238060-A1 · Aug 5, 2021 · US
US-2021187492-A1 · Jun 24, 2021 · US
US-2021130544-A1 · May 6, 2021 · US
US-10967367-B2 · Apr 6, 2021 · US
US-2021062296-A1 · Mar 4, 2021 · US
US-10933410-B2 · Mar 2, 2021 · US
US-2021029977-A1 · Feb 4, 2021 · US
US-2020339442-A1 · Oct 29, 2020 · US
US-10807085-B2 · Oct 20, 2020 · US
US-2020164357-A1 · May 28, 2020 · US
Answers are generated from the same data shown on this page.