ClassID:

168788

G01N30/462 - CPC Classification

Classification description:

Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation; Column chromatography; Conditioning of the fluid carrier; Flow patterns; Flow patterns using more than one column with serial coupling of separation columns with different eluents or with eluents in different states

Recent Application in this class:
#1
20250123247
2025-04-17

Apparatus for Processing a Liquid Comprising a Target Substance

#2
20230393141
2023-12-07

DUAL-COLUMN LC-MS SYSTEM AND METHODS OF USE THEREOF

#3
20220357336
2022-11-10

Dual-column LC-MS system and methods of use thereof

#4
20220010350
2022-01-13

Gas testing unit and method

#5
20210109108
2021-04-15

Dual-column LC-MS system and methods of use thereof

#6
20210033574
2021-02-04

Apparatus for processing a liquid comprising a target substance

#7
20200393426
2020-12-17

Systems and methods for two-dimensional chromatography

#8
20190360978
2019-11-28

MULTIDIMENSIONAL CHROMATOGRAPHIC ANALYSIS METHOD AND ANALYSIS SYSTEM

#9
20190234960
2019-08-01

Dual-column LC-MS system and methods of use thereof

#10
20190154638
2019-05-23

System and method for real time monitoring of a chemical sample

#11
20190079062
2019-03-14

Systems and methods for two-dimensional chromatography

#12
20190070523
2019-03-07

CHROMATOGRAPHIC PURIFICATION METHOD

#13
20190024133
2019-01-24

Gas testing unit and method

#14
20190011407
2019-01-10

Expanded bed affinity selection

#15
20180275106
2018-09-27

Expanded bed affinity selection

#16
20180196019
2018-07-12

Modifier stream elution of trap column for multidimensional compressible fluid-based chromatography

#17
20170029802
2017-02-02

ACOUSTIC AFFINITY SEPARATION

#18
20170023535
2017-01-26

Multi-column separation apparatus and method

#19
20160334375
2016-11-17

Methods for analysis of phase-I and phase-II metabolites and parent compounds without hydrolysis

#20
20160238573
2016-08-18

Systems and methods for two-dimensional chromatography

#21
20160115517
2016-04-28

Gas testing unit and method

#22
20150165343
2015-06-18

Multidimensional liquid chromatography separation system and separation method for protein separation

#23
20140306105
2014-10-16

Liquid chromatography systems and methods

#24
20140299547
2014-10-09

Chromatographic purification method

#25
20140178979
2014-06-26

System for analysis of phase-I and phase-II metabolites and parent compounds without hydrolysis

#26
20130140238
2013-06-06

Arrangement of HILIC chromatography column and SPE enrichment arrangement for preparing samples and analyzing pesticides

#27
20120286154
2012-11-15

Method and device for repetitive chemical analysis of a gas flow

#28
20120131987
2012-05-31

Method and Apparatus for Gas Chromatographic Analysis of a Gas Mixture

#29
20110212536
2011-09-01

METHOD AND APPARATUS FOR THE ISOTOPE-RATIO ANALYSIS

#30
20110198272
2011-08-18

Preparative separation/purification system

#31
20100218585
2010-09-02

Multi-dimensional high performance liquid chromatographic separation technique (STAR7) for quantitative determinations of 7 fractions in heavy petroleum streams boiling above 550 degrees F

#32
20100116023
2010-05-13

Method for extracting polychlorinated biphenyls

#33
20100093530
2010-04-15

Method of preparing a composition using argentation chromatography

#34
20090249860
2009-10-08

Gas-liquid two-phase flow chromatographic analyzer and method of analysis using the same analyzer

#35
20090217735
2009-09-03

Gas chromatography system and method

#36
20090000358
2009-01-01

Method of Analysis Using Chromatographic Pre-Separation

#37
20080209983
2008-09-04

Method of analyzing organic chemical substances and apparatus for analysis

#38
20070295664
2007-12-27

Focusing a sample on an analytical column

#39
20070181504
2007-08-09

Method of preparing a composition using argentation chromatography

#40
20070065343
2007-03-22

Multidimensional chromatography apparatus and method

#41
20070029477
2007-02-08

Compact gas chromatography and ion mobility based sample analysis systems, methods, and devices