Chang LIU

Person

Richmond Hill, CA

People

Patents Grantslast 30 patents

Information Patent Grant
3-d mixing and particle delivery via movable electromagnets assemblies
- Patent number 12,138,606
- Issue date Nov 12, 2024
- DH Technologies Development Pte. Ltd.
- Don W Arnold
- B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...
Information Patent Grant
Electromagnetic coil assembly structure for processing fluids and m...
- Patent number 12,135,969
- Issue date Nov 5, 2024
- DH Technologies Development Pte. Ltd.
- Don W. Arnold
- B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...
Information Patent Grant
Volumetric measurement of micro droplets
- Patent number 12,036,568
- Issue date Jul 16, 2024
- DH Technologies Development Pte. Ltd.
- Thomas R Covey
- B05 - SPRAYING OR ATOMISING IN GENERAL APPLYING LIQUIDS OR OTHER FLUENT MATER...
Information Patent Grant
System and method to conduct correlated chemical mapping
- Patent number 11,990,325
- Issue date May 21, 2024
- DH Technologies Development Pte. Ltd.
- Thomas R. Covey
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Electromagnetic assemblies for processing fluids
- Patent number 11,828,691
- Issue date Nov 28, 2023
- DH Technologies Development Pte. Ltd.
- Don W. Arnold
- B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...
Information Patent Grant
Methods and systems for increasing sensitivity of direct sampling i...
- Patent number 11,817,302
- Issue date Nov 14, 2023
- DH Technologies Development Pte. Ltd.
- Don W. Arnold
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
System and method for the acoustic loading of an analytical instrum...
- Patent number 11,637,006
- Issue date Apr 25, 2023
- LABCYTE, INC.
- Sammy Datwani
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Methods and systems for increasing sensitivity of direct sampling i...
- Patent number 11,476,106
- Issue date Oct 18, 2022
- DH Technologies Development Pte. Ltd.
- Don W. Arnold
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Sampling interface for a mass spectrometer
- Patent number 11,450,519
- Issue date Sep 20, 2022
- DH Technologies Development Pte. Ltd.
- Thomas R Covey
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Methods and systems utilizing ultrasound-assisted sampling interfac...
- Patent number 11,348,780
- Issue date May 31, 2022
- DH Technologies Development Pte. Ltd.
- Don W. Arnold
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Sampling probe and sampling interface for mass spectrometry
- Patent number 11,232,938
- Issue date Jan 25, 2022
- DH Technologies Development Pte. Ltd.
- Don W Arnold
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Methods and systems for feedback control of direct sampling interfa...
- Patent number 11,232,939
- Issue date Jan 25, 2022
- DH Technologies Development Pte. Ltd.
- Don W Arnold
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Isomeric reagent tags for differential mobility spectrometry
- Patent number 11,085,925
- Issue date Aug 10, 2021
- DH Technologies Development Pte. Ltd.
- John L Campbell
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Methods and systems for increasing sensitivity of direct sampling i...
- Patent number 10,998,179
- Issue date May 4, 2021
- DH Technologies Development Pte. Ltd.
- Don W. Arnold
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
System and method for the acoustic loading of an analytical instrum...
- Patent number 10,770,277
- Issue date Sep 8, 2020
- LABCYTE, INC.
- Sammy Datwani
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Magnetic elements for processing fluids
- Patent number 10,656,147
- Issue date May 19, 2020
- DH Technologies Development Pte. Ltd.
- John L. Campbell
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Systems and methods for multi-channel differential mobility spectro...
- Patent number 10,613,055
- Issue date Apr 7, 2020
- DH Technologies Development Pte. Ltd.
- Thomas Covey
- G01 - MEASURING TESTING
Information Patent Grant
Fluid transfer from digital microfluidic device
- Patent number 10,486,156
- Issue date Nov 26, 2019
- DH Technologies Development Pte. Ltd.
- John Lawrence Campbell
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Grant
Sampling interface for mass spectrometry systems and methods
- Patent number 10,103,015
- Issue date Oct 16, 2018
- DH Technologies Development Pte. Ltd.
- Don W. Arnold
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Grant
Methods for detection in differential mobility spectrometer using a...
- Patent number 10,001,456
- Issue date Jun 19, 2018
- DH Technologies Development Pte. Ltd.
- John L Campbell
- H01 - BASIC ELECTRIC ELEMENTS

Patents Applicationslast 30 patents

Information Patent Application
METHODS AND SYSTEMS FOR ASSESSING A QUALITY OF MASS ANALYSIS DATA G...
- Publication number 20240418686
- Publication date Dec 19, 2024
- DH Technologies Development Pte. Ltd.
- Chang LIU
- G01 - MEASURING TESTING
Information Patent Application
SYSTEMS AND METHODS FOR SIGNAL DECONVOLUTION FOR NON-CONTACT SAMPLE...
- Publication number 20240404807
- Publication date Dec 5, 2024
- DH Technologies Development Pte. Ltd.
- Gordana IVOSEV
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Systems and Methods for Background Ion Detection in Mass Spectrometry
- Publication number 20240395522
- Publication date Nov 28, 2024
- DH Technologies Development Pte. Ltd.
- Gordana IVOSEV
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SPECTRAL COMPARISON
- Publication number 20240379336
- Publication date Nov 14, 2024
- DH Technologies Development Pte. Ltd.
- Chang LIU
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
OPTIMIZATION OF DMS SEPARATIONS USING ACOUSTIC EJECTION MASS SPECTR...
- Publication number 20240379338
- Publication date Nov 14, 2024
- DH Technologies Development Pte. Ltd.
- Bradley B. Schneider
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
CHROMATOGRAPHIC-LIKE SEPARATION USING SAMPLE DROPLET EJECTION
- Publication number 20240345044
- Publication date Oct 17, 2024
- DH Technologies Development Pte. Ltd.
- David Cox
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Methods and Systems for Increasing Sensitivity of Direct Sampling I...
- Publication number 20240347333
- Publication date Oct 17, 2024
- DH Technologies Development Pte. Ltd.
- Don W. Arnold
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
STANDARD ADDITION WORKFLOW FOR QUANTITATIVE ANALYSIS
- Publication number 20240339311
- Publication date Oct 10, 2024
- DH Technologies Development Pte. Ltd.
- Thomas R. COVEY
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SYSTEMS AND METHODS FOR HANDLING AND ANALYZING SAMPLES
- Publication number 20240326055
- Publication date Oct 3, 2024
- DH Technologies Development Pte. Ltd.
- Thomas R. COVEY
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
METHOD AND SYSTEM FOR TIMED INTRODUCTION OF SAMPLE INTO A MASS SPEC...
- Publication number 20240312774
- Publication date Sep 19, 2024
- DH Technologies Development Pte. Ltd.
- Peter Kovarik
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
MS Calibration for OPI-MS
- Publication number 20240290595
- Publication date Aug 29, 2024
- DH Technologies Development Pte. Ltd.
- Thomas COVEY
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Methods and Systems for Performing Reactions Within Direct Sampling...
- Publication number 20240282563
- Publication date Aug 22, 2024
- DH Technologies Development Pte. Ltd.
- Thomas COVEY
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SYSTEMS AND METHODS FOR INTRODUCING SAMPLES TO OPEN PORT INTERFACE
- Publication number 20240272191
- Publication date Aug 15, 2024
- DH Technologies Development Pte. Ltd.
- Meghav Verma
- G01 - MEASURING TESTING
Information Patent Application
Direct Sampling from Phase-Separated Sample for Hydrophobicity Asse...
- Publication number 20240272101
- Publication date Aug 15, 2024
- DH Technologies Development Pte. Ltd.
- Thomas COVEY
- G01 - MEASURING TESTING
Information Patent Application
Bioanalysis Workflow with Direct Ejection from Phase-Separated Samples
- Publication number 20240272173
- Publication date Aug 15, 2024
- DH Technologies Development Pte. Ltd.
- Thomas COVEY
- G01 - MEASURING TESTING
Information Patent Application
SYSTEM AND METHODS FOR SAMPLE PROCESSING WITH MASS SPECTROMETRY INC...
- Publication number 20240255473
- Publication date Aug 1, 2024
- DH Technologies Development Pte. Ltd.
- Thomas R. COVEY
- G01 - MEASURING TESTING
Information Patent Application
Methods and Apparatus for Washing Sampling Probe for Use in Mass Sp...
- Publication number 20240234117
- Publication date Jul 11, 2024
- DH Technologies Development Pte. Ltd.
- Thomas R. COVEY
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Sampling From A Magnetic Induced Heterogenous System
- Publication number 20240203717
- Publication date Jun 20, 2024
- DH Technologies Development Pte. Ltd.
- Thomas R. COVEY
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
BIOLOGICAL SAMPLE PREPARATION AND ANALYSIS
- Publication number 20240168040
- Publication date May 23, 2024
- DH Technologies Development Pte. Ltd.
- Aaron Stella
- G01 - MEASURING TESTING
Information Patent Application
SYSTEMS AND METHODS FOR HUMIDITY AND/OR TEMPERATURE CONTROL IN A SA...
- Publication number 20240168046
- Publication date May 23, 2024
- DH Technologies Development Pte. Ltd.
- Thomas R. Covey
- G01 - MEASURING TESTING
Information Patent Application
NON-CONTACT SAMPLER WITH AN OPEN-PORT INTERFACE FOR LIQUID CHROMATO...
- Publication number 20240159716
- Publication date May 16, 2024
- DH Technologies Development Pte. Ltd.
- David Michael COX
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
Methods and Apparatus for Washing Sampling Probe for Use in Mass Sp...
- Publication number 20240136168
- Publication date Apr 25, 2024
- DH Technologies Development Pte. Ltd.
- Thomas R. COVEY
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SYSTEMS AND METHODS FOR CONTROLLING FLOW THROUGH AN OPEN PORT INTER...
- Publication number 20240112901
- Publication date Apr 4, 2024
- DH Technologies Development Pte. Ltd.
- Chang LIU
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SYSTEMS AND METHODS FOR OBTAINING SAMPLES FOR ANALYSIS
- Publication number 20240096611
- Publication date Mar 21, 2024
- DH Technologies Development Pte. Ltd.
- Thomas R. COVEY
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
ELECTRODE PROTRUSION ADJUSTMENT FOR MAXIMIZING PRESSURE DROP ACROSS...
- Publication number 20240096614
- Publication date Mar 21, 2024
- DH Technologies Development Pte. Ltd.
- Peter KOVARIK
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
Method and System for Mass Spectrometry Signal Quality Assessment
- Publication number 20240068997
- Publication date Feb 29, 2024
- DH Technologies Development Pte. Ltd.
- Gordana Ivosev
- B01 - PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
Information Patent Application
AFFINITY SELECTION BY MASS SPECTROMETRY WORKFLOW USING MAGNETIC PAR...
- Publication number 20240053356
- Publication date Feb 15, 2024
- DH Technologies Development Pte. Ltd.
- Chang LIU
- G01 - MEASURING TESTING
Information Patent Application
DYNAMIC EJECTION DELAY TIME FOR ACOUSTIC EJECTION MASS SPECTROMETRY
- Publication number 20240038518
- Publication date Feb 1, 2024
- DH Technologies Development Pte. Ltd.
- Chang LIU
- H01 - BASIC ELECTRIC ELEMENTS
Information Patent Application
SYSTEMS AND METHODS FOR PROCESSING A FLUID SAMPLE
- Publication number 20230405594
- Publication date Dec 21, 2023
- DH Technologies Development Pte. Ltd.
- Chang LIU
- B03 - SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES O...
Information Patent Application
Sampling Probe with Internal Sampling for Use in Mass Spectrometry...
- Publication number 20230349858
- Publication date Nov 2, 2023
- DH Technologies Development Pte. Ltd.
- Thomas R Covey
- H01 - BASIC ELECTRIC ELEMENTS

Person

Patents Grantslast 30 patents

3-d mixing and particle delivery via movable electromagnets assemblies

Electromagnetic coil assembly structure for processing fluids and m...

Volumetric measurement of micro droplets

System and method to conduct correlated chemical mapping

Electromagnetic assemblies for processing fluids

Methods and systems for increasing sensitivity of direct sampling i...

System and method for the acoustic loading of an analytical instrum...

Methods and systems for increasing sensitivity of direct sampling i...

Sampling interface for a mass spectrometer

Methods and systems utilizing ultrasound-assisted sampling interfac...

Sampling probe and sampling interface for mass spectrometry

Methods and systems for feedback control of direct sampling interfa...

Isomeric reagent tags for differential mobility spectrometry

Methods and systems for increasing sensitivity of direct sampling i...

System and method for the acoustic loading of an analytical instrum...

Magnetic elements for processing fluids

Systems and methods for multi-channel differential mobility spectro...

Fluid transfer from digital microfluidic device

Sampling interface for mass spectrometry systems and methods

Methods for detection in differential mobility spectrometer using a...

Patents Applicationslast 30 patents

METHODS AND SYSTEMS FOR ASSESSING A QUALITY OF MASS ANALYSIS DATA G...

SYSTEMS AND METHODS FOR SIGNAL DECONVOLUTION FOR NON-CONTACT SAMPLE...

Systems and Methods for Background Ion Detection in Mass Spectrometry

SPECTRAL COMPARISON

OPTIMIZATION OF DMS SEPARATIONS USING ACOUSTIC EJECTION MASS SPECTR...

CHROMATOGRAPHIC-LIKE SEPARATION USING SAMPLE DROPLET EJECTION

Methods and Systems for Increasing Sensitivity of Direct Sampling I...

STANDARD ADDITION WORKFLOW FOR QUANTITATIVE ANALYSIS

SYSTEMS AND METHODS FOR HANDLING AND ANALYZING SAMPLES

METHOD AND SYSTEM FOR TIMED INTRODUCTION OF SAMPLE INTO A MASS SPEC...

MS Calibration for OPI-MS

Methods and Systems for Performing Reactions Within Direct Sampling...

SYSTEMS AND METHODS FOR INTRODUCING SAMPLES TO OPEN PORT INTERFACE

Direct Sampling from Phase-Separated Sample for Hydrophobicity Asse...

Bioanalysis Workflow with Direct Ejection from Phase-Separated Samples

SYSTEM AND METHODS FOR SAMPLE PROCESSING WITH MASS SPECTROMETRY INC...

Methods and Apparatus for Washing Sampling Probe for Use in Mass Sp...

Sampling From A Magnetic Induced Heterogenous System

BIOLOGICAL SAMPLE PREPARATION AND ANALYSIS

SYSTEMS AND METHODS FOR HUMIDITY AND/OR TEMPERATURE CONTROL IN A SA...

NON-CONTACT SAMPLER WITH AN OPEN-PORT INTERFACE FOR LIQUID CHROMATO...

Methods and Apparatus for Washing Sampling Probe for Use in Mass Sp...

SYSTEMS AND METHODS FOR CONTROLLING FLOW THROUGH AN OPEN PORT INTER...

SYSTEMS AND METHODS FOR OBTAINING SAMPLES FOR ANALYSIS

ELECTRODE PROTRUSION ADJUSTMENT FOR MAXIMIZING PRESSURE DROP ACROSS...

Method and System for Mass Spectrometry Signal Quality Assessment

AFFINITY SELECTION BY MASS SPECTROMETRY WORKFLOW USING MAGNETIC PAR...

DYNAMIC EJECTION DELAY TIME FOR ACOUSTIC EJECTION MASS SPECTROMETRY

SYSTEMS AND METHODS FOR PROCESSING A FLUID SAMPLE

Sampling Probe with Internal Sampling for Use in Mass Spectrometry...