Preparative size-exclusion chromatography for separation and purification of water-stable Cd-based quantum dots
US-10139377-B1 · Nov 27, 2018 · US
Size-selective separation, e.g. size-exclusion chromatography; Gel filtration; Permeation
Size-selective separation, e.g. size-exclusion chromatography; Gel filtration; Permeation · 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 | B01D15/34 |
| Official title | Size-selective separation, e.g. size-exclusion chromatography; Gel filtration; Permeation |
| Display label | Size-selective separation, e.g. size-exclusion chromatography; Gel filtration; Permeation |
| Total patents | 338 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 11 |
| 2016 | 17 |
| 2017 | 23 |
| 2018 | 26 |
| 2019 | 33 |
| 2020 | 31 |
| 2021 | 32 |
| 2022 | 41 |
| 2023 | 36 |
| 2024 | 34 |
| 2025 | 40 |
| 2026 | 14 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Method for separating dna by size
US-2018291365-A1 · Oct 11, 2018 · US
Method of purifying nucleic acids and kit for purifying nucleic acids
US-10023860-B2 · Jul 17, 2018 · US
Methods for reducing aggregate content in protein preparations
US-9975919-B2 · May 22, 2018 · US
Packing material for liquid chromatography
US-2018104669-A1 · Apr 19, 2018 · US
Protein-nanoparticle conjugate purfication methods
US-2018086850-A1 · Mar 29, 2018 · US
Agarose-filled ceramic apatite
US-2018085735-A1 · Mar 29, 2018 · US
Portable fluidic platform for rapid cell-free production of protein biologics
US-9908064-B2 · Mar 6, 2018 · US
Chromatographic purification of virus preparations with negatively charged particles
US-9902942-B2 · Feb 27, 2018 · US
Methods for Characterizing Branching Distribution in Polymers
US-2017363605-A1 · Dec 21, 2017 · US
Mass spectrometry-cleavable cross-linker
US-2017350901-A1 · Dec 7, 2017 · US
Reagent purification systems, methods, and apparatus
US-2017327438-A1 · Nov 16, 2017 · US
Purification of biological products by constrained cohydration chromatography
US-9809639-B2 · Nov 7, 2017 · US
Fab REGION-BINDING PEPTIDE
US-2017305965-A1 · Oct 26, 2017 · US
Reduction of migration shift assay interference
US-9766216-B2 · Sep 19, 2017 · US
Affinity chromatography matrix
US-2017247407-A1 · Aug 31, 2017 · US
Purification of biological products by constrained cohydration chromatography
US-2017218011-A1 · Aug 3, 2017 · US
Integrated Continuous Manufacturing of Therapeutic Protein Drug Substances
US-2017218012-A1 · Aug 3, 2017 · US
Materials and methods for removing endotoxins from protein preparations
US-9695216-B2 · Jul 4, 2017 · US
Hybrid material for chromatographic separations comprising a superficially porous core and a surrounding material
US-2017173561-A1 · Jun 22, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC B01D15/34?
- CPC B01D15/34 is the Cooperative Patent Classification code for “Size-selective separation, e.g. size-exclusion chromatography; Gel filtration; Permeation.”
- How many patents are filed under CPC B01D15/34 (Size-selective separation, e.g. size-exclusion chromatography; Gel filtration; Permeation)?
- Our database includes 338 publications tagged with this CPC code.
- Is patent activity under CPC B01D15/34 growing?
- Publication counts under this code: 34 in 2024 vs 40 in 2025 (latest complete years).