Inventor
Subhasish Purkayastha
Inventor
Acton, MA, US
Overview
Patents· 27 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
G01Nprimary
G01NInvestigating or analysing materials by determining their chemical or physical properties30%
Y10TTechnical subjects covered by former us classification21%
C07DHeterocyclic compounds15%
C12QMeasuring or testing processes involving enzymes, nucleic acids or microorganisms7%
H01JElectric discharge tubes or discharge lamps7%
C07BGeneral methods of organic chemistry4%
C07CAcyclic or carbocyclic compounds3%
C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments3%
C12NMicroorganisms or enzymes3%
B01FMixing, e.g. dissolving, emulsifying or dispersing1%
PatentTitleYear
10,656,147Magnetic elements for processing fluids202010,281,468Microbial identification and quantitation using MS cleavable tags201910,094,809Specific analysis of ketone and aldehyde analytes using reagent compounds, labeling strategies, and mass spectrometry workflow201810,078,091Analysis of a panel of cerebrotendinous xanthomatosis biomarkers using site specific derivation and LC/MS/MS workflow20189,970,942System and method for the detection of allergens20189,964,552Mass spectrometric identification and/or quantitation of catecholamines using aminopyrazoles20189,874,575Analysis of estradiol and analytes with phenolic OH using labeling chemistry and LC-MSMS workflow20189,546,393'Mass spectrometry quantitation of P450 isoforms in hepatocytes'20179,500,622'Specific analysis of ketone and aldehyde analytes using reagent compounds, labeling strategies, and mass spectrometry workflow'20169,257,267'Composition, method, and kit for calibrating a mass spectrometer'20169,188,596'Quantitative analysis of vitamin D3, vitamin D2, and metabolites thereof'20158,975,404'Labeling reagents for analyte determination and methods and compounds used in making the same'20158,940,545'Mass spectrometry quantitation of P450 isoforms in hepatocytes'20158,853,133'Analyte determination utilizing mass tagging reagents comprising a non-encoded detectable label'20148,617,898'Quantitative analysis of vitamin D3, vitamin D2, and metabolites thereof'20138,569,071'Amine-containing compound analysis methods'20138,569,304'Active esters of N-substituted piperazine acetic acids, including isotopically enriched versions thereof'20138,501,498'Mass tags for quantitative analyses'20138,492,163'Methods, mixtures, kits and compositions pertaining to analyte determination'20138,372,653'Mass tag reagents for simultaneous quantitation and identification of small molecules'20138,362,242'Analyte determination utilizing mass tagging reagents comprising a non-encoded detectable label'20138,273,706'Isobarically labeled analytes and fragment ions derived therefrom'20128,236,565'Tagging reagents and methods for hydroxylated compounds'20127,906,341'Methods, mixtures, kits and compositions pertaining to analyte determination'20117,364,911'Methods for isolating and labeling sample molecules'20087,355,045'Isotopically enriched N-substituted piperazine acetic acids and methods for the preparation thereof'20087,183,116'Methods for isolation and labeling of sample molecules'2007Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2007–2020Based in Acton, MA, US· patent location history
2008–2018Patents assigned to PURKAYASTHA SUBHASISH (15)· patent assignee history
2008–2013Patents assigned to PILLAI SASI (4)· patent assignee history
2011–2020Patents assigned to DH TECHNOLOGIES DEV PTE LTD (24)· patent assignee history
2012–2015Patents assigned to DEY SUBHAKAR (9)· patent assignee history
2012–2015Patents assigned to PAPPIN DARRYL J C (4)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| DH TECHNOLOGIES DEV PTE LTD | 24 | 2011–2020 |
| PURKAYASTHA SUBHASISHself | 15 | 2008–2018 |
| DEY SUBHAKAR | 9 | 2012–2015 |
| PAPPIN DARRYL J C | 4 | 2012–2015 |
| PILLAI SASI | 4 | 2008–2013 |
Locations
| Location | Patents | Span |
|---|---|---|
| Acton, Massachusetts, US | 27 | 2007–2020 |