Inventor · disambiguated record

Chang Liu

Also filed as: LIU CHANG · LIU CHANG FA

36 granted patents·46 pending applications·89 citations·filing 2004–2025

95Inventor score

Technology areasH01J G01N B01D B01L B21K

Files withDH TECHNOLOGIES DEV PTE LTD66 LABCYTE INC4 HUNAN JIN YUAN NEW MAT JOINT STOCK COMPANY LIMITED2 JINN RUEY IND CO LTD2 UNIV INNER MONGOLIA TECHNOLOGY2

Top patents by PatentIndex Score

82 records

0198US10770277B2System and method for the acoustic loading of an analytical instrument using a continuous flow sampling probeLABCYTE INC·Filed 2018·Granted Sep 8, 2020·39 cites·55 claims
0297US11817302B2Methods and systems for increasing sensitivity of direct sampling interfaces for mass spectrometric analysisDH TECHNOLOGIES DEV PTE LTD·Filed 2022·Granted Nov 14, 2023·3 cites·17 claims
0396US11476106B2Methods and systems for increasing sensitivity of direct sampling interfaces for mass spectrometric analysisDH TECHNOLOGIES DEV PTE LTD·Filed 2021·Granted Oct 18, 2022·3 cites·7 claims
0493US10998179B2Methods and systems for increasing sensitivity of direct sampling interfaces for mass spectrometric analysisDH TECHNOLOGIES DEV PTE LTD·Filed 2017·Granted May 4, 2021·7 cites·18 claims
0593US10486156B2Fluid transfer from digital microfluidic deviceDH TECHNOLOGIES DEV PTE LTD·Filed 2015·Granted Nov 26, 2019·9 cites·11 claims
0687US11232938B2Sampling probe and sampling interface for mass spectrometryDH TECHNOLOGIES DEV PTE LTD·Filed 2019·Granted Jan 25, 2022·4 cites·20 claims
0787US10103015B2Sampling interface for mass spectrometry systems and methodsDH TECHNOLOGIES DEV PTE LTD·Filed 2017·Granted Oct 16, 2018·5 cites·18 claims
0885US12176119B1Integrated rapid treatment system for nuclear medical radioactive wastewater and application method thereofUNIV SW SCI & TECH SWUST·Filed 2024·Granted Dec 24, 2024·2 cites·8 claims
0984US2024347333A1Methods and Systems for Increasing Sensitivity of Direct Sampling Interfaces for Mass Spectrometric AnalysisDH TECHNOLOGIES DEV PTE LTD·Filed 2023·Application pending·0 cites
1083US12154776B2System and method for the acoustic loading of an analytical instrument using a continuous flow sampling probeLABCYTE INC·Filed 2023·Granted Nov 26, 2024·0 cites·7 claims
1181US10656147B2Magnetic elements for processing fluidsDH TECHNOLOGIES DEV PTE LTD·Filed 2015·Granted May 19, 2020·2 cites·12 claims
1279US2025018412A1Volumetric measurement of micro dropletsDH TECHNOLOGIES DEV PTE LTD·Filed 2024·Application pending·0 cites
1378US10001456B2Methods for detection in differential mobility spectrometer using a peptide metal complexDH TECHNOLOGIES DEV PTE LTD·Filed 2015·Granted Jun 19, 2018·2 cites·19 claims
1477US11637006B2System and method for the acoustic loading of an analytical instrument using a continuous flow sampling probeLABCYTE INC·Filed 2021·Granted Apr 25, 2023·0 cites·20 claims
1576US2025360515A1Electromagnetic Assemblies for Processing FluidsDH TECHNOLOGIES DEV PTE LTD·Filed 2025·Application pending·0 cites
1673US11133163B2System and method for the acoustic loading of an analytical instrument using a continuous flow sampling probeLABCYTE INC·Filed 2020·Granted Sep 28, 2021·0 cites·32 claims
1769US12447676B1Extrusion device for enhancing bonding strength between 3D printing layersLIU CHANG·Filed 2025·Granted Oct 21, 2025·0 cites·8 claims
1867US12303971B2Device and process for hot air jet dewaxing and reclaiming wax composition from pattern for casting shell makingUNIV INNER MONGOLIA TECHNOLOGY·Filed 2024·Granted May 20, 2025·0 cites·10 claims
1966US10613055B2Systems and methods for multi-channel differential mobility spectrometryDH TECHNOLOGIES DEV PTE LTD·Filed 2017·Granted Apr 7, 2020·1 cites·14 claims
2065US2025361982A1Lubrication unit for a joining module and method for lubricating a joining module using such a lubrication unitKISTLER HOLDING AG·Filed 2025·Application pending·0 cites
2164US12036568B2Volumetric measurement of micro dropletsDH TECHNOLOGIES DEV PTE LTD·Filed 2019·Granted Jul 16, 2024·0 cites·16 claims
2263US12476097B2Identification of a first sample in a series of sequential samplesDH TECHNOLOGIES DEV PTE LTD·Filed 2021·Granted Nov 18, 2025·0 cites·20 claims
2363US2024272191A1Systems and methods for introducing samples to open port interfaceDH TECHNOLOGIES DEV PTE LTD·Filed 2024·Application pending·0 cites
2462US12135969B2Electromagnetic coil assembly structure for processing fluids and methods for making sameDH TECHNOLOGIES DEV PTE LTD·Filed 2019·Granted Nov 5, 2024·0 cites·16 claims
2562US2024390828A1Device and method for harmless treatment and regeneration of waste liquid discharge during water glass mold shell hardened with ammonium chloride solutionUNIV INNER MONGOLIA TECHNOLOGY·Filed 2024·Application pending·0 cites
2660US2025343035A1Pressure Based OPI Position ControlDH TECHNOLOGIES DEV PTE LTD·Filed 2023·Application pending·0 cites
2760US2024379336A1Spectral comparisonDH TECHNOLOGIES DEV PTE LTD·Filed 2022·Application pending·0 cites
2859US12397302B2Electromagnetic assemblies for processing fluidsDH TECHNOLOGIES DEV PTE LTD·Filed 2016·Granted Aug 26, 2025·0 cites·8 claims
2959US2024418686A1Methods and systems for assessing a quality of mass analysis data generated by a mass spectrometerDH TECHNOLOGIES DEV PTE LTD·Filed 2022·Application pending·0 cites
3059US2024272101A1Direct Sampling from Phase-Separated Sample for Hydrophobicity AssessmentDH TECHNOLOGIES DEV PTE LTD·Filed 2022·Application pending·0 cites
3159US2023405594A1Systems and methods for processing a fluid sampleDH TECHNOLOGIES DEV PTE LTD·Filed 2021·Application pending·0 cites
3259US2024255473A1System and methods for sample processing with mass spectrometry incorporating magnetic beadsDH TECHNOLOGIES DEV PTE LTD·Filed 2022·Application pending·0 cites
3359US2024272173A1Bioanalysis Workflow with Direct Ejection from Phase-Separated SamplesDH TECHNOLOGIES DEV PTE LTD·Filed 2022·Application pending·0 cites
3458US7234223B2Method for forging/molding a coarse blank of an aluminum transmission shaftJINN RUEY IND CO LTD·Filed 2004·Granted Jun 26, 2007·8 cites·4 claims
3558US2025308871A1Systems and methods for automatic sample re-runs in sample analysysDH TECHNOLOGIES DEV PTE LTD·Filed 2023·Application pending·0 cites
3658US2025258132A1Systems and Methods for Sync of Instrument Voltages with Orthogonal Ion PulsingDH TECHNOLOGIES DEV PTE LTD·Filed 2023·Application pending·0 cites
3758US2025259832A1High-Throughput Analysis Using Ion Mobility and Mass SpectroscopyDH TECHNOLOGIES DEV PTE LTD·Filed 2023·Application pending·0 cites
3858US2025308870A1Droplet dispensation by fluid level and energyDH TECHNOLOGIES DEV PTE LTD·Filed 2023·Application pending·0 cites
3958US2024168046A1Systems and methods for humidity and/or temperature control in a sample analysis systemDH TECHNOLOGIES DEV PTE LTD·Filed 2022·Application pending·0 cites
4058US2025251363A1System and Methods for High Throughput Mass SpectrometryDH TECHNOLOGIES DEV PTE LTD·Filed 2023·Application pending·0 cites
4157US11990325B2System and method to conduct correlated chemical mappingDH TECHNOLOGIES DEV PTE LTD·Filed 2020·Granted May 21, 2024·0 cites·20 claims
4257US2025069873A1Systems and methods for error correction in fast sample readersDH TECHNOLOGIES DEV PTE LTD·Filed 2022·Application pending·0 cites
4357US2024053356A1Affinity selection by mass spectrometry workflow using magnetic particlesDH TECHNOLOGIES DEV PTE LTD·Filed 2022·Application pending·0 cites
4457US2025379044A1Systems and methods for data acquisition method switchingDH TECHNOLOGIES DEV PTE LTD·Filed 2023·Application pending·0 cites
4556US2025130146A1Methods and Systems for Extracting Analytes From a SampleDH TECHNOLOGIES DEV PTE LTD·Filed 2022·Application pending·0 cites
4656US2024395522A1Systems and Methods for Background Ion Detection in Mass SpectrometryDH TECHNOLOGIES DEV PTE LTD·Filed 2022·Application pending·0 cites
4755US2024068997A1Method and System for Mass Spectrometry Signal Quality AssessmentDH TECHNOLOGIES DEV PTE LTD·Filed 2021·Application pending·0 cites
4855US2024282563A1Methods and Systems for Performing Reactions Within Direct Sampling Interfaces for Mass Spectrometric AnalysisDH TECHNOLOGIES DEV PTE LTD·Filed 2022·Application pending·0 cites
4955US2024345044A1Chromatographic-like separation using sample droplet ejectionDH TECHNOLOGIES DEV PTE LTD·Filed 2022·Application pending·0 cites
5055US2025125134A1Automatic data processing for multiply charged analytes in mass spectrometryDH TECHNOLOGIES DEV PTE LTD·Filed 2022·Application pending·0 cites

Showing the top 50 of 82 patent records by PatentIndex Score.

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Identity basis: PatentsView inventor disambiguation (2025Q4-odp release). How scoring works →