Inventor

Benjamin Y. H. Liu

Inventor

North Oaks, MN, US

Overview

1976–2019

Patent span

Performing operations

Primary field (CPC B)

Patents· 68 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 properties15%

C23CCoating metallic material10%

B05BSpraying apparatus9%

H10PGeneric processes or apparatus for the manufacture or treatment of devices covered by class h108%

Y10STechnical subjects covered by former uspc cross-reference art collections [xracs] and digests8%

F01NGas-flow silencers or exhaust apparatus for machines or engines in general5%

Y02TClimate change mitigation technologies related to transportation5%

B03CMagnetic or electrostatic separation of solid materials from solid materials or fluids4%

F02BInternal-combustion piston engines4%

B01DSeparation3%

PatentTitleYear

10,287,679Apparatus and method for vapor generation and film deposition2019 9,895,707'Method and apparatus for generating monodisperse aerosols'2018 9,797,593'Apparatus and method for vapor generation and film deposition'2017 9,768,005'Electrospray ionizer for mass spectrometry of aerosol particles'2017 9,764,333'Electrical ionizer for aerosol charge conditioning and measurement'2017 9,541,488'Particle sampling and measurement in the ambient air'2017 9,089,800'Method and apparatus for vapor and gas filtration'2015 8,986,784'Fine droplet atomization for liquid precursor vaporization'2015 8,945,281'Method and apparatus for vapor generation and wafer cleaning'2015 8,783,652'Liquid flow control for film deposition'2014 8,728,240'Apparatus for vapor condensation and recovery'2014 8,711,338'Apparatus for counting particles in a gas'2014 8,603,247'Apparatus for counting particles in a gas'2013 8,603,580'High stability and high capacity precursor vapor generation for thin film deposition'2013 8,554,064'Method and apparatus for generating vapor at high rates'2013 8,529,985'Method for liquid precursor atomization'2013 8,511,583'Fine droplet atomizer for liquid precursor vaporization'2013 8,465,791'Method for counting particles in a gas'2013 8,393,599'Apparatus for liquid precursor atomization'2013 8,297,223'Method and apparatus for particle filtration and enhancing tool performance in film deposition'2012 8,132,793'Method and apparatus for liquid precursor atomization'2012 7,882,799'Method and apparatus for generating charged particles for deposition on a surface'2011 7,830,510'Apparatus for high-accuracy fiber counting in air'2010 7,363,828'Aerosol measurement by dilution and particle counting'2008 7,325,441'Personal mask test system'2008 7,276,224'Synthesis of nanoporous particles'2007 7,267,711'Electrostatic precipitator for diesel blow-by'2007 7,082,811'Cascade impactor with individually driven impactor plates'2006 6,902,604'Electrostatic precipitator with internal power supply'2005 6,829,044'Compact, high-efficiency condensation nucleus counter'2004 6,805,907'Method and apparatus for vapor generation and film deposition'2004 6,746,539'Scanning deposition head for depositing particles on a wafer'2004 6,723,568'Method and apparatus for cascade impactor testing of inhalable drug therapies recovery for chemical analysis'2004 6,639,671'Wide-range particle counter'2003 6,607,597'Method and apparatus for deposition of particles on surfaces'2003 6,601,777'Suspended particle container for an atomizer'2003 6,561,045'Sampler for eliminating particle-related artifacts for flue gas measurement'2003 6,527,821'Automatic condensed oil remover'2003 6,453,758'Efficient high-productivity cascade impactors'2002 6,431,014'High accuracy aerosol impactor and monitor'2002 6,409,839'Method and apparatus for vapor generation and film deposition'2002 6,364,941'Compact high efficiency electrostatic precipitator for droplet aerosol collection'2002 6,349,668'Method and apparatus for thin film deposition on large area substrates'2002 6,221,136'Compact electrostatic precipitator for droplet aerosol collection'2001 5,916,640'Method and apparatus for controlled particle deposition on surfaces'1999 5,609,798'High output PSL aerosol generator'1997 5,534,309'Method and apparatus for depositing particles on surfaces'1996 5,453,107'Air and gas cooling and filtration apparatus'1995 5,176,723'Condensation-growth particle scrubber'1993 5,160,664'High output monodisperse aerosol generator'1992 5,040,424'High volume PM.sub.10 sampling inlet'1991 4,972,957'Particle concentrating sampler'1990 4,962,776'Process for surface and fluid cleaning'1990 4,941,899'Cyclone personal sampler for aerosols'1990 4,928,537'System for airborne particle measurement in a vacuum'1990 4,875,340'Non-contaminating flow visualization system'1989 4,827,779'Cartridge personal sampling impactor'1989 4,817,652'System for surface and fluid cleaning'1989 4,771,608'Non-contaminating flow visualization system'1988 4,718,975'Particle shield'1988 4,670,135'High volume virtual impactor'1987 4,355,504'Apparatus for reducing particles discharged by combustion means'1982 4,338,784'Method of recycling collected exhaust particles'1982 4,321,822'Impactor apparatus'1982 4,316,360'Apparatus for recycling collected exhaust particles'1982 4,304,096'Method for reducing particulates discharged by combustion means'1981 4,015,582'Solar heat collector'1977 3,997,433'Method and apparatus for generating dry dust particles'1976

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1976–2017Patents assigned to LIU BENJAMIN Y H (12)· patent assignee history

1976–1977Based in Minneapolis, MN, US· patent location history

1977–2017Patents assigned to UNIV MINNESOTA (17)· patent assignee history

1981–2019Based in North Oaks, MN, US· patent location history

1992–2019Patents assigned to MSP CORP (47)· patent assignee history

2012–2015Patents assigned to MA YAMIN (6)· patent assignee history

2013–2015Patents assigned to DINH THUC M (6)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
MSP CORP	47	1992–2019
UNIV MINNESOTA	17	1977–2017
LIU BENJAMIN Y Hself	12	1976–2017
DINH THUC M	6	2013–2015
MA YAMIN	6	2012–2015

Locations

Location	Patents	Span
North Oaks, Minnesota, US	66	1981–2019
Minneapolis, Minnesota, US	2	1976–1977