| 11879898 |
Method for measuring testosterone using LC-MSMS |
Michal Weinstock |
2024-01-23 |
| 11549944 |
Microbial identification and quantitation using MS cleavable tags |
Subhasish Purkayastha |
2023-01-10 |
| 10281468 |
Microbial identification and quantitation using MS cleavable tags |
Subhasish Purkayastha |
2019-05-07 |
| 10094809 |
Specific analysis of ketone and aldehyde analytes using reagent compounds, labeling strategies, and mass spectrometry workflow |
Sasi Pillai, Brian L. Williamson, Subhasish Purkayastha, Michal Weinstock |
2018-10-09 |
| 9964552 |
Mass spectrometric identification and/or quantitation of catecholamines using aminopyrazoles |
Subhasish Purkayastha |
2018-05-08 |
| 9874575 |
Analysis of estradiol and analytes with phenolic OH using labeling chemistry and LC-MSMS workflow |
Subhasish Purkayastha |
2018-01-23 |
| 9500622 |
Specific analysis of ketone and aldehyde analytes using reagent compounds, labeling strategies, and mass spectrometry workflow |
Sasi Pillal, Brian L. Williamson, Subhasish Purkayastha, Michal Weinstock |
2016-11-22 |
| 9257267 |
Composition, method, and kit for calibrating a mass spectrometer |
Marjorie S. Minkoff, Sasi Pillai, Subhasish Purkayastha, Brian L. Williamson |
2016-02-09 |
| 9188596 |
Quantitative analysis of vitamin D3, vitamin D2, and metabolites thereof |
Sasi Pillal, Brian L. Williamson, Subhasish Purkayastha |
2015-11-17 |
| 8975404 |
Labeling reagents for analyte determination and methods and compounds used in making the same |
Sasi Pillai, Subhasish Purkayastha, Darryl Pappin |
2015-03-10 |
| 8853133 |
Analyte determination utilizing mass tagging reagents comprising a non-encoded detectable label |
Subhasish Purkayastha |
2014-10-07 |
| 8617898 |
Quantitative analysis of vitamin D3, vitamin D2, and metabolites thereof |
Sasi Pillai, Brian L. Williamson, Subhasish Purkayastha |
2013-12-31 |
| 8569304 |
Active esters of N-substituted piperazine acetic acids, including isotopically enriched versions thereof |
Darryl Pappin, Subhasish Purkayastha, Sasi Pillai, James M. Coull |
2013-10-29 |
| 8501498 |
Mass tags for quantitative analyses |
Xiongwei Yan, Pau Miau Yuan, Sylvia W. Yuen, Kuo-Liang Hsi, Joe Y. L. Lam +5 more |
2013-08-06 |
| 8492163 |
Methods, mixtures, kits and compositions pertaining to analyte determination |
Subhasish Purkayastha, Scott Daniels |
2013-07-23 |
| 8372653 |
Mass tag reagents for simultaneous quantitation and identification of small molecules |
Subhasish Purkayastha |
2013-02-12 |
| 8362242 |
Analyte determination utilizing mass tagging reagents comprising a non-encoded detectable label |
Subhasish Purkayastha |
2013-01-29 |
| 8236565 |
Tagging reagents and methods for hydroxylated compounds |
Subhasish Purkayastha, Sasi Pillai |
2012-08-07 |
| 7906341 |
Methods, mixtures, kits and compositions pertaining to analyte determination |
Subhasish Purkayastha, Scott Daniels |
2011-03-15 |
| 7892737 |
Compositions, kits and methods pertaining to stability modulation of PNA oligomer/nucleic acid complexes |
Eric Anderson |
2011-02-22 |
| 7355045 |
Isotopically enriched N-substituted piperazine acetic acids and methods for the preparation thereof |
Darryl Pappin, Subhasish Purkayastha, Sasi Pillai, James M. Coull |
2008-04-08 |