Method of purification and purified products
US-2024075407-A1 · Mar 7, 2024 · US
Polar phases
Polar phases · Cooperative Patent Classification (CPC)
Separating, mixing, shaping, printing, and transporting materials.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | B01J20/288 |
| Official title | Polar phases |
| Display label | Polar phases |
| Total patents | 134 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 9 |
| 2016 | 16 |
| 2017 | 7 |
| 2018 | 13 |
| 2019 | 10 |
| 2020 | 12 |
| 2021 | 17 |
| 2022 | 9 |
| 2023 | 13 |
| 2024 | 13 |
| 2025 | 8 |
| 2026 | 7 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Immunoglobulin binding protein, and affinity support using same
US-2020262873-A1 · Aug 20, 2020 · US
Silica composite monolith as a solid phase extraction material
US-2020246778-A1 · Aug 6, 2020 · US
Anionic exchange-hydrophobic mixed mode
US-10682640-B2 · Jun 16, 2020 · US
Protein separations using an acrylamide containing filter
US-10570171-B2 · Feb 25, 2020 · US
Multimodal chromatographic media for protein separation
US-2019358621-A1 · Nov 28, 2019 · US
Chromatographic materials
US-2019217273-A1 · Jul 18, 2019 · US
Packing material for hilic columns, hilic column filled with same, and method for analyzing oligosaccharide with use of same
US-2019184372-A1 · Jun 20, 2019 · US
High purity chromatographic materials comprising an ionizable modifier for retention of acidic analytes
US-2019126241-A1 · May 2, 2019 · US
Chromatographic materials
US-10265679-B2 · Apr 23, 2019 · US
Multimodal adsorption medium with multimodal ligands, method for the preparation and use thereof
US-2019105632-A1 · Apr 11, 2019 · US
Liquid chromatographic separation of carbohydrate tautomers
US-2019092800-A1 · Mar 28, 2019 · US
Chromatography stationary phase
US-2019060871-A1 · Feb 28, 2019 · US
Materials for hydrophilic interaction chromatography and processes for preparation and use thereof for analysis of glycoproteins and glycopeptides
US-2019056360-A1 · Feb 21, 2019 · US
Adsorbent material and purification method
US-2019039046-A1 · Feb 7, 2019 · US
Chromatographic materials for the separation of unsaturated molecules
US-2018345248-A1 · Dec 6, 2018 · US
Chromatographic materials
US-2018326399-A1 · Nov 15, 2018 · US
Materials for hydrophilic interaction chromatography and processes for preparation and use thereof for analysis of glycoproteins and glycopeptides
US-10119944-B2 · Nov 6, 2018 · US
Chromatographic materials for the separation of unsaturated molecules
US-10092894-B2 · Oct 9, 2018 · US
Small molecule affinity membrane purification systems and uses thereof
US-2018273582-A1 · Sep 27, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01J20/288?
- CPC B01J20/288 is the Cooperative Patent Classification code for “Polar phases.”
- How many patents are filed under CPC B01J20/288 (Polar phases)?
- Our database includes 134 publications tagged with this CPC code.
- Is patent activity under CPC B01J20/288 growing?
- Publication counts under this code: 13 in 2024 vs 8 in 2025 (latest complete years).