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Subhakar Dey
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Lexington, MA, US
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Patents Grants
last 30 patents
Information
Patent Grant
Method for measuring testosterone using LC-MSMS
Patent number
11,879,898
Issue date
Jan 23, 2024
DH Technologies Development Pte. Ltd.
Subhakar N Dey
G01 - MEASURING TESTING
Information
Patent Grant
Microbial identification and quantitation using MS cleavable tags
Patent number
11,549,944
Issue date
Jan 10, 2023
DH Technologies Development Pte. Ltd.
Subhasish Purkayastha
C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
Information
Patent Grant
Microbial identification and quantitation using MS cleavable tags
Patent number
10,281,468
Issue date
May 7, 2019
DH Technologies Development Pte. Ltd.
Subhasish Purkayastha
C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
Information
Patent Grant
Specific analysis of ketone and aldehyde analytes using reagent com...
Patent number
10,094,809
Issue date
Oct 9, 2018
DH Technologies Development Pte. Ltd.
Subhakar Dey
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Mass spectrometric identification and/or quantitation of catecholam...
Patent number
9,964,552
Issue date
May 8, 2018
DH Technologies Development Pte. Ltd.
Subhakar Dey
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Analysis of estradiol and analytes with phenolic OH using labeling...
Patent number
9,874,575
Issue date
Jan 23, 2018
DH Technologies Development Pte. Ltd.
Subhakar Dey
G01 - MEASURING TESTING
Information
Patent Grant
Specific analysis of ketone and aldehyde analytes using reagent com...
Patent number
9,500,622
Issue date
Nov 22, 2016
DH Technologies Development Pte. Ltd.
Subhakar Dey
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Composition, method, and kit for calibrating a mass spectrometer
Patent number
9,257,267
Issue date
Feb 9, 2016
DH Technologies Development Pte. Ltd.
Subhakar N. Dey
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Grant
Quantitative analysis of vitamin D3, vitamin D2, and metabolites th...
Patent number
9,188,596
Issue date
Nov 17, 2015
DH Technologies Development Pte. Ltd.
Subhakar Dey
G01 - MEASURING TESTING
Information
Patent Grant
Labeling reagents for analyte determination and methods and compoun...
Patent number
8,975,404
Issue date
Mar 10, 2015
DH Technologies Development Pte. Ltd.
Sasi K. Pillai
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Analyte determination utilizing mass tagging reagents comprising a...
Patent number
8,853,133
Issue date
Oct 7, 2014
DH Technologies Development Pte. Ltd.
Subhasish Purkayastha
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Quantitative analysis of vitamin D3, vitamin D2, and metabolites th...
Patent number
8,617,898
Issue date
Dec 31, 2013
DH Technologies Development Pte. Ltd.
Subhakar Dey
G01 - MEASURING TESTING
Information
Patent Grant
Active esters of N-substituted piperazine acetic acids, including i...
Patent number
8,569,304
Issue date
Oct 29, 2013
DH Technologies Development Pte. Ltd.
Subhakar Dey
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Mass tags for quantitative analyses
Patent number
8,501,498
Issue date
Aug 6, 2013
DH Technologies Development Pte. Ltd.
Xiongwei Yan
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Methods, mixtures, kits and compositions pertaining to analyte dete...
Patent number
8,492,163
Issue date
Jul 23, 2013
DH Technologies Development Pte. Ltd.
Subhasish Purkayastha
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Mass tag reagents for simultaneous quantitation and identification...
Patent number
8,372,653
Issue date
Feb 12, 2013
DH Technologies Development Pte. Ltd.
Subhakar Dey
G01 - MEASURING TESTING
Information
Patent Grant
Analyte determination utilizing mass tagging reagents comprising a...
Patent number
8,362,242
Issue date
Jan 29, 2013
DH Technologies Development Pte. Ltd.
Subhasish Purkayastha
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Tagging reagents and methods for hydroxylated compounds
Patent number
8,236,565
Issue date
Aug 7, 2012
DH Technologies Development Pte. Ltd.
Subhasish Purkayastha
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Methods, mixtures, kits and compositions pertaining to analyte dete...
Patent number
7,906,341
Issue date
Mar 15, 2011
DH Technologies Development Pte, Ltd.
Subhasish Purkayastha
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Compositions, kits and methods pertaining to stability modulation o...
Patent number
7,892,737
Issue date
Feb 22, 2011
Life Technologies Corporation
Subhakar Dey
C07 - ORGANIC CHEMISTRY
Information
Patent Grant
Isotopically enriched N-substituted piperazine acetic acids and met...
Patent number
7,355,045
Issue date
Apr 8, 2008
Applera Corporation
Subhakar Dey
C07 - ORGANIC CHEMISTRY
Patents Applications
last 30 patents
Information
Patent Application
Phenacylbromide-Based Mass Tags For Carboxyl And Phenolic Functiona...
Publication number
20230258652
Publication date
Aug 17, 2023
DH Technologies Development Pte. Ltd.
Scott DANIELS
G01 - MEASURING TESTING
Information
Patent Application
Microbial Identification and Quantitation Using MS Cleavable Tags
Publication number
20230236189
Publication date
Jul 27, 2023
DH Technologies Development Pte. Ltd.
Subhasish Purkayastha
G01 - MEASURING TESTING
Information
Patent Application
MULTIPLEXED EXTERNAL CALIBRATOR AND CONTROL FOR SCREENING AND DIAGN...
Publication number
20220308066
Publication date
Sep 29, 2022
Jason Cournoyer
G01 - MEASURING TESTING
Information
Patent Application
Method for Measuring Testosterone Using LC-MSMS
Publication number
20220057412
Publication date
Feb 24, 2022
DH Technologies Development Pte. Ltd.
Subhakar N Dey
G01 - MEASURING TESTING
Information
Patent Application
Microbial Identification and Quantitation Using MS Cleavable Tags
Publication number
20190212337
Publication date
Jul 11, 2019
DH Technologies Development Pte. Ltd.
Subhasish Purkayastha
C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
Information
Patent Application
SPECIFIC ANALYSIS OF KETONE AND ALDEHYDE ANALYTES USING REAGENT COM...
Publication number
20170115258
Publication date
Apr 27, 2017
DH Technologies Development Pte. Ltd.
Subhakar Dey
G01 - MEASURING TESTING
Information
Patent Application
Microbial Identification and Quantitation Using MS Cleavable Tags
Publication number
20170052180
Publication date
Feb 23, 2017
Subhasish Purkayastha
C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
Information
Patent Application
MASS SPECTROMETRIC IDENTIFICATION AND/OR QUANTITATION OF CATECHOLAM...
Publication number
20160305969
Publication date
Oct 20, 2016
DH Technologies Development Pte. Ltd.
Subhakar Dey
G01 - MEASURING TESTING
Information
Patent Application
ANALYSIS OF ESTRADIOL AND ANALYTES WITH PHENOLIC OH USING LABELING...
Publication number
20150051111
Publication date
Feb 19, 2015
DH Technologies Development Pte. Ltd.
Subhakar Dey
G01 - MEASURING TESTING
Information
Patent Application
ENHANCEMENT OF SENSITIVITY AND SPECIFICITY OF KETOSTEROIDS AND KETO...
Publication number
20140349885
Publication date
Nov 27, 2014
Subhakar Dey
G01 - MEASURING TESTING
Information
Patent Application
QUANTITATIVE ANALYSIS OF VITAMIN D3, VITAMIN D2, AND METABOLITES TH...
Publication number
20140127825
Publication date
May 8, 2014
DH Technologies Development Pte. Ltd.
Subhakar Dey
G01 - MEASURING TESTING
Information
Patent Application
COMPOSITION, METHOD, AND KIT FOR CALIBRATING A MASS SPECTROMETER
Publication number
20140027625
Publication date
Jan 30, 2014
DH Technilogies Development Pte. Ltd.
Subhakar N. Dey
H01 - BASIC ELECTRIC ELEMENTS
Information
Patent Application
SPECIFIC ANALYSIS OF KETONE AND ALDEHYDE ANALYTES USING REAGENT COM...
Publication number
20140004616
Publication date
Jan 2, 2014
DH Technologies Development Pte. Ltd.
Subhakar Dey
G01 - MEASURING TESTING
Information
Patent Application
ANALYTE DETERMINATION UTILIZING MASS TAGGING REAGENTS COMPRISING A...
Publication number
20130184181
Publication date
Jul 18, 2013
DH Technologies Development Pte Ltd.
Subhasish Purkayastha
C12 - BIOCHEMISTRY BEER SPIRITS WINE VINEGAR MICROBIOLOGY ENZYMOLOGY MUTATION...
Information
Patent Application
Methods, Mixtures, Kits and Compositions Pertaining to Analyte Dete...
Publication number
20120196378
Publication date
Aug 2, 2012
Subhasish Purkayastha
C07 - ORGANIC CHEMISTRY
Information
Patent Application
MASS TAG REAGENTS FOR SIMULTANEOUS QUANTITATION AND IDENTIFICATION...
Publication number
20110183420
Publication date
Jul 28, 2011
DH Technologies Development Pte. Ltd.
Subhakar DEY
G01 - MEASURING TESTING
Information
Patent Application
QUANTITATIVE ANALYSIS OF VITAMIN D3, VITAMIN D2, AND METABOLITES TH...
Publication number
20110183429
Publication date
Jul 28, 2011
Subhakar DEY
G01 - MEASURING TESTING
Information
Patent Application
Analyte Determination Utilizing Mass Tagging Reagents Comprising A...
Publication number
20110028685
Publication date
Feb 3, 2011
Applera Corporation
Subhasish Purkayastha
C07 - ORGANIC CHEMISTRY
Information
Patent Application
SPECIFIC ANALYSIS OF ANALYTES USING REAGENT COMPOUNDS, LABELING STR...
Publication number
20110003395
Publication date
Jan 6, 2011
DH Technologies Development Pte. Ltd.
Subhakar DEY
G01 - MEASURING TESTING
Information
Patent Application
MASS TAGS FOR QUANTITATIVE ANALYSES
Publication number
20100311175
Publication date
Dec 9, 2010
Life Technologies Corporation
Xiongwei YAN
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Methods, Compositions And Libraries Pertaining To PNA Dimer And PNA...
Publication number
20100190660
Publication date
Jul 29, 2010
BOSTON PROBES, INC.
Ralph A. Casale
C40 - COMBINATORIAL CHEMISTRY
Information
Patent Application
Active Esters of N-Substituted Piperazine Acetic Acids, Including I...
Publication number
20090227791
Publication date
Sep 10, 2009
Subhakar Dey
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Isotopically Enriched N-Substituted Piperazine Acetic Acids And Met...
Publication number
20090176984
Publication date
Jul 9, 2009
Subhakar Dey
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Methods, Mixtures, Kits And Compositions Pertaining To Analyte Dete...
Publication number
20080241955
Publication date
Oct 2, 2008
Applera Corporation
Subhasish Purkayastha
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Methods, Mixtures, Kits and Compositions Pertaining to Analyte Dete...
Publication number
20070218560
Publication date
Sep 20, 2007
Applera Corporation
Sasi K. Pillai
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Mass tags for quantitative analyses
Publication number
20070048752
Publication date
Mar 1, 2007
Applera Corporation
Xiongwei Yan
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Compositions, kits and methods pertaining to stability modulation o...
Publication number
20070003966
Publication date
Jan 4, 2007
Applera Corporation
Subhakar Dey
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Isotopically enriched N-substituted piperazine acetic acids and met...
Publication number
20050148774
Publication date
Jul 7, 2005
Applera Corporation.
Subhakar Dey
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Active esters of N-substituted piperazine acetic acids, including i...
Publication number
20050148771
Publication date
Jul 7, 2005
Applera Corporation.
Subhakar Dey
C07 - ORGANIC CHEMISTRY
Information
Patent Application
Methods, compositions and libraries pertaining to PNA dimer and PNA...
Publication number
20040142355
Publication date
Jul 22, 2004
Ralph A. Casale
C40 - COMBINATORIAL CHEMISTRY