Analytical method for sugar chains having acidic groups
US-2020406229-A1 · Dec 31, 2020 · US
with serial coupling of separation columns
with serial coupling of separation columns · Cooperative Patent Classification (CPC)
Computing, optics, measurement, and control technologies.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | G01N30/461 |
| Official title | {with serial coupling of separation columns} |
| Display label | with serial coupling of separation columns |
| Total patents | 119 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 8 |
| 2016 | 7 |
| 2017 | 14 |
| 2018 | 6 |
| 2019 | 12 |
| 2020 | 17 |
| 2021 | 17 |
| 2022 | 6 |
| 2023 | 9 |
| 2024 | 11 |
| 2025 | 11 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Progressive cellular architecture for microfabricated gas chromatograph
US-10866220-B2 · Dec 15, 2020 · US
Compositions and methods for producing a composition
US-10808021-B2 · Oct 20, 2020 · US
Ligand Assisted Chromatography for Metal Ion Separation
US-2020308668-A1 · Oct 1, 2020 · US
Spatial temperature gradients in liquid chromatography
US-10705060-B2 · Jul 7, 2020 · US
Device, use of said device, and method for separating substances with an improved utilization of the capacity of chromatographic media
US-10669307-B2 · Jun 2, 2020 · US
Method for analyzing sample by liquid chromatograph mass spectrometry
US-2020158701-A1 · May 21, 2020 · US
Clamp for Chromatography Columns
US-2020150100-A1 · May 14, 2020 · US
Peripheral distribution or collection system for a simulated moving bed separation method using N columns in series
US-10646795-B2 · May 12, 2020 · US
Method and apparatus for chromatographic purification
US-2020101399-A1 · Apr 2, 2020 · US
Ligand assisted chromatography for metal ion separation
US-10597751-B2 · Mar 24, 2020 · US
Dispersive element in liquid chromatography systems
US-2020025723-A1 · Jan 23, 2020 · US
Parallel Separation and Washing in Size Exclusion Chromatography Separation or in Desalting of a Target from a Sample
US-2020011841-A1 · Jan 9, 2020 · US
Carbohydrate content of CTLA4 molecules
US-10508144-B2 · Dec 17, 2019 · US
High resolution and semi-preparative recycling chromatography system for isolation and preparation of unknown trace impurities in pharmaceutical products
US-2019366234-A1 · Dec 5, 2019 · US
Progressive Cellular Architecture For Microfabricated Gas Chromatograph
US-2019346411-A1 · Nov 14, 2019 · US
Bioprocess Purification System and Method
US-2019336886-A1 · Nov 7, 2019 · US
Compact gas analysis device and method
US-2019331660-A1 · Oct 31, 2019 · US
Automated two-column recycling chromatography method for unlocking challenging separation problems
US-2019302067-A1 · Oct 3, 2019 · US
Automated multi-step purification system
US-10429359-B2 · Oct 1, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC G01N30/461?
- CPC G01N30/461 is the Cooperative Patent Classification code for “with serial coupling of separation columns.”
- How many patents are filed under CPC G01N30/461 (with serial coupling of separation columns)?
- Our database includes 119 publications tagged with this CPC code.
- Is patent activity under CPC G01N30/461 growing?
- Publication counts under this code: 11 in 2024 vs 11 in 2025 (latest complete years).