ClassID:

168728

G01N2030/143 - 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; Preparation or injection of sample to be analysed; Preparation by elimination of some components selective absorption

Recent Application in this class:
#1
20260009772
2026-01-08

Gas Analysis System

#2
20240369460
2024-11-07

ISOLATION AND ANALYSIS OF TERPENES

#3
20230168163
2023-06-01

System and Method for Diffusive Gas Sampling for Collection of VOCs, SVOCs and/or PFAS Chemicals in Air

#4
20220291099
2022-09-15

Isolation and analysis of terpenes

#5
20220111389
2022-04-14

SAMPLE PREPARATION DEVICE

#6
20210404995
2021-12-30

System and method of trace-level analysis of chemical compounds

#7
20210116424
2021-04-22

Method and system for analysis of additives in water-based polymer sample

#8
20200378928
2020-12-03

Recovery of organic compounds in liquid samples using full evaporative vacuum extraction, thermal desorption, and GCMS analysis

#9
20190389743
2019-12-26

Method for initiating a graphene oxide through reduction by a reductant to controllably release organic compounds

#10
20190360903
2019-11-28

Isolation and analysis of terpenes

#11
20190211272
2019-07-11

Hydrocarbon Analysis Methods

#12
20190187109
2019-06-20

Purification elements for dispensing a purified liquid

#13
20190106639
2019-04-11

Methods for analyzing hydrocarbons and hydrocarbon blends for chemical compositions

#14
20190079060
2019-03-14

Pretreatment method for analyzing dioxin compounds and analytical method using the same

#15
20190070610
2019-03-07

Sample preparation device

#16
20180292365
2018-10-11

Gaseous mercury detection systems, calibration systems, and related methods

#17
20180180579
2018-06-28

Method and system for low temperature detection of semi volatile organic compounds

#18
20180172647
2018-06-21

Staged Preconcentration and parallel column gas chromatography

#19
20180172646
2018-06-21

Microfabricated staged preconcentration and parallel column for gas chromatography

#20
20180100834
2018-04-12

Preparative separation-purification method and system

#21
20180080930
2018-03-22

Chemical analysis apparatus, pretreatment apparatus, and chemical analysis method

#22
20180038777
2018-02-08

Polypyrrole/graphene oxide nanocomposite-coated fiber located in a capillary tube reinforced by a vacuum system for assessment of oxidative stability of edible oils

#23
20170299586
2017-10-19

Method of detecting an analyte using chromatographic enrichment

#24
20170284978
2017-10-05

Multi-capillary column pre-concentration system for enhanced sensitivity in gas chromatography (GC) and gas chromatography-mass spectrometry (GCMS)

#25
20170261475
2017-09-14

Apparatus and method for mitigation of alterations in mass spectrometry in the presence of hydrogen

#26
20170261408
2017-09-14

Vacuum-assisted sample extraction device and method

#27
20170253489
2017-09-07

Graphene-based inorganic-organic hybrid materials and separation of racemic mixtures

#28
20160334375
2016-11-17

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

#29
20160327526
2016-11-10

Method for ion detection

#30
20160272899
2016-09-22

Methods of successive elution of components of hydrocarbons

#31
20160187306
2016-06-30

Vial cap and method for removing matrix components from a liquid sample

#32
20160033456
2016-02-04

Gaseous mercury detection systems, calibration systems, and related methods

#33
20150301008
2015-10-22

Method for ion detection

#34
20150198567
2015-07-16

Adapter housing and connecting device for chromatography

#35
20140260974
2014-09-18

Capillary microextractor of volatiles (CMV)

#36
20140178979
2014-06-26

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

#37
20130067991
2013-03-21

Hydrocarbon separation and analysis apparatus and methods

#38
20120017667
2012-01-26

Column and method of evaluation of contaminated condition of gas

#39
20110259798
2011-10-27

Process for predicting and reducing the corrosivity of a hydrocarbonaceous mixture

#40
20110172403
2011-07-14

Microfluidic Device Including Purification Column with Excess Diluent and Method

#41
20110126609
2011-06-02

Method and apparatus for analysis of poly (biphenyl chloride) in electrical insulating oil

#42
20110000294
2011-01-06

Method of analyzing a number of hydrocarbons contained in a drilling fluid, and associated device

#43
20080293151
2008-11-27

FIBER-PACKED NEEDLE FOR ANALYZING ALDEHYDES/KETONES, ANALYTICAL APPARATUS AND ANALYTICAL METHOD

#44
20080261312
2008-10-23

Methods for matrix cleanup and analysis of drugs and metabolites in biological matrices

#45
20080236256
2008-10-02

Device and method for sample preparation

#46
20070128320
2007-06-07

QUANTITATIVE TEST METHOD FOR DETERMINING HEAT TRANSFER OIL IN EDIBLE OIL OR FAT

#47
20070051163
2007-03-08

Method and apparatus for gas measurement at substantially constant pressure

#48
20070017868
2007-01-25

FLUIDIC ANALYSIS WITH HYDROPHOBIC AND HYDROPHILIC COMPOUNDS TRAPPING

#49
20060245975
2006-11-02

Adsorbent housing with separated adsorption outflow and desorption inflow

#50
20060196247
2006-09-07

Chromatographic methods for measuring impurities in a gas sample

#51
20060186048
2006-08-24

Method for fluid sampling using electrically controlled droplets

#52
20060073608
2006-04-06

Analysis of metals in acidic solutions

#53
20050042772
2005-02-24

Removal of proteins from a sample

#54
20050010002
2005-01-13

Method of determining cationic surfactant

#55
16656228
2021-12-21

Functionalized coating polymers and uses thereof