Inventor

Purnendu K. Dasgupta

Inventor

Lubbock, TX, US

Overview

38→

Patents

1985–2020

Patent span

Physics

Primary field (CPC G)

Patents· 38 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 properties43%

B01DSeparation18%

Y02EReduction of greenhouse gas [ghg] emissions, related to energy generation, transmission or distribution7%

Y10TTechnical subjects covered by former us classification7%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry5%

C25BElectrolytic or electrophoretic processes for the production of compounds or non-metals5%

B01LChemical or physical laboratory apparatus for general use3%

B22DCasting of metals3%

C21CProcessing of pig-iron, e.g. refining, manufacture of wrought-iron or steel3%

G02BOptical elements, systems or apparatus3%

PatentTitleYear

10,814,319Functionalized polyolefin capillaries for open tubular ion chromatography2020 10,634,653Systems, methods and devices for width-based analysis of peak traces2020 10,416,137Electrodialytic capillary suppressor for suppressed conductometric ion chromatography2019 10,393,648Cavity enhancement methods, systems and devices, and methods of measuring same2019 10,228,355Volatile eluent preparation2019 10,208,387Three-electrode buffer generator and method2019 10,180,394Systems and methods for performing cavity-enhanced absorption spectroscopy2019 10,023,965Electrolytic buffer generator2018 9,677,999'Cavity enhancement methods, systems and devices, and methods of measuring same'2017 9,580,822'Three-electrode buffer generator and method'2017 9,482,611'Method and apparatus for scanning detection'2016 9,103,780'Pretreatment device for dissolved ions analysis and dissolved ion analysis system'2015 8,741,658'Rapid method to measure cyanide in biological samples'2014 8,551,318'Ion detector and system'2013 8,293,099'Ion detector and system'2012 7,964,411'Membrane based concentrators'2011 7,632,404'Barrier with a seated ion exchange bead and method'2009 7,314,718'Method and apparatus for maintaining multiple planar fluid flows'2008 7,306,720'Membrane based volatile component-removal devices for liquid chromatography'2007 6,993,252'Self-monitoring flow-through heater'2006 6,890,372'Denuder assembly for collection and removal of soluble atmospheric gases'2005 6,393,894'Gas sensor with phased heaters for increased sensitivity'2002 6,332,049'Luminescence detector with liquid-core waveguide'2001 6,086,736'Electromigration injection from a microreservoir-electrode in capillary separation systems'2000 6,011,882'Chemical sensing techniques employing liquid-core optical fibers'2000 5,814,199'Forming thin film interfaced samples for analysis with capillary separation systems'1998 5,766,959'Method for determining a component using a liquid film or droplet'1998 5,660,703'Apparatus for capillary electrophoresis having an auxiliary electroosmotic pump'1997 5,573,651'Apparatus and method for flow injection analysis'1996 5,433,838'Electrophoresis with chemically suppressed detection'1995 5,358,612'Electrophoresis with chemically suppressed detection'1994 5,316,630'Methods for chromatography analysis'1994 5,045,204'Method and apparatus for generating a high purity chromatography eluent'1991 4,920,056'Apparatus and method for automated microbatch reaction'1990 4,852,632'Apparatus for preventing undissolved alloying ingredient from entering continuous casting mold'1989 4,754,800'Preventing undissolved alloying ingredient from entering continuous casting mold'1988 4,647,380'Annular dual membrane permselective device and method'1987 4,500,430'Continuously rejuvenated ion exchanger'1985

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1985–2020Patents assigned to DASGUPTA PURNENDU K (11)· patent assignee history

1985–2008Based in Lubbock, TX, US· patent location history

1988–1989Based in Highland, IN, US· patent location history

1990–1998Patents assigned to DOW CHEMICAL CO (6)· patent assignee history

1991–2020Patents assigned to DIONEX CORP (12)· patent assignee history

2009–2020Based in Arlington, TX, US· patent location history

2011–2020Patents assigned to UNIV TEXAS (13)· patent assignee history

2012–2018Patents assigned to SRINIVASAN KANNAN (4)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
UNIV TEXAS	13	2011–2020
DIONEX CORP	12	1991–2020
DASGUPTA PURNENDU Kself	11	1985–2020
DOW CHEMICAL CO	6	1990–1998
SRINIVASAN KANNAN	4	2012–2018

Locations

Location	Patents	Span
Lubbock, Texas, US	19	1985–2008
Arlington, Texas, US	17	2009–2020
Highland, IN, US	2	1988–1989