Inventor
Subhakar Dey
Inventor
Billerica, MA, US
Overview
Patents· 22 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 properties21%
C07DHeterocyclic compounds15%
Y10TTechnical subjects covered by former us classification15%
C09BOrganic dyes or closely-related compounds for producing dyes, e.g. pigments7%
C12QMeasuring or testing processes involving enzymes, nucleic acids or microorganisms6%
H01JElectric discharge tubes or discharge lamps6%
C07BGeneral methods of organic chemistry4%
C11DDetergent compositions4%
C07CAcyclic or carbocyclic compounds3%
C08GMacromolecular compounds obtained otherwise than by reactions only involving unsaturated carbon-to-carbon bonds3%
PatentTitleYear
10,954,474Leuco polymers as bluing agents in laundry care compositions202110,920,083Leuco polymers as bluing agents in laundry care compositions202110,889,717Compositions, methods, and test kits for determining authenticity202110,281,468Microbial identification and quantitation using MS cleavable tags201910,094,809Specific analysis of ketone and aldehyde analytes using reagent compounds, labeling strategies, and mass spectrometry workflow20189,964,552Mass spectrometric identification and/or quantitation of catecholamines using aminopyrazoles20189,874,575Analysis of estradiol and analytes with phenolic OH using labeling chemistry and LC-MSMS workflow20189,500,622'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'20158,853,133'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'20138,569,304'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'20138,236,565'Tagging reagents and methods for hydroxylated compounds'20127,906,341'Methods, mixtures, kits and compositions pertaining to analyte determination'20117,892,737'Compositions, kits and methods pertaining to stability modulation of PNA oligomer/nucleic acid complexes'20117,355,045'Isotopically enriched N-substituted piperazine acetic acids and methods for the preparation thereof'2008Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2008–2015Based in Billerica, MA, US· patent location history
2011–2019Patents assigned to DH TECHNOLOGIES DEV PTE LTD (17)· patent assignee history
2012–2016Patents assigned to PURKAYASTHA SUBHASISH (10)· patent assignee history
2012–2015Patents assigned to DEY SUBHAKAR (9)· patent assignee history
2012Based in N. Billerice, MA, US· patent location history
2013–2015Patents assigned to PAPPIN DARRYL J C (3)· patent assignee history
2015–2019Based in Lexington, MA, US· patent location history
2021Patents assigned to MILLIKEN & CO (3)· patent assignee history
2021Based in Spartanburg, SC, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| DH TECHNOLOGIES DEV PTE LTD | 17 | 2011–2019 |
| PURKAYASTHA SUBHASISH | 10 | 2012–2016 |
| DEY SUBHAKARself | 9 | 2012–2015 |
| MILLIKEN & CO | 3 | 2021 |
| PAPPIN DARRYL J C | 3 | 2013–2015 |
Locations
| Location | Patents | Span |
|---|---|---|
| Billerica, Massachusetts, US | 11 | 2008–2015 |
| Lexington, Massachusetts, US | 7 | 2015–2019 |
| Spartanburg, SC, US | 3 | 2021 |
| N. Billerice, Massachusetts, US | 1 | 2012 |