Inventor

Joy Roy

Inventor

San Jose, CA, US

Overview

1988–2021

Patent span

Performing operations

Primary field (CPC B)

Patents· 38 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

B41Jprimary

B41JTypewriters32%

G01NInvestigating or analysing materials by determining their chemical or physical properties20%

B01LChemical or physical laboratory apparatus for general use18%

Y10TTechnical subjects covered by former us classification13%

C12QMeasuring or testing processes involving enzymes, nucleic acids or microorganisms8%

B01JChemical or physical processes, e.g. catalysis or colloid chemistry3%

A61BDiagnosis1%

B05BSpraying apparatus1%

G16HHealthcare informatics, i.e. information and communication technology [ict] specially adapted for the handling or processing of medical or healthcare data1%

Y02ATechnologies for adaptation to climate change1%

PatentTitleYear

11,054,432Systems and methods for multi-purpose analysis2021 10,856,791Systems, devices, and methods for bodily fluid sample collection2020 10,627,418Systems and methods for multi-analysis2020 10,557,863Systems and methods for multi-analysis2020 10,518,265Systems and methods for fluid handling2019 9,810,704'Systems and methods for multi-analysis'2017 9,714,444'Systems and methods for multiple analyte detection'2017 9,664,702'Fluid handling apparatus and configurations'2017 9,592,508'Systems and methods for fluid handling'2017 8,597,590'Systems and methods for multiple analyte detection'2013 8,475,739'Systems and methods for fluid handling'2013 8,318,094'Substrate analysis systems'2012 7,517,043'Fluidic structures'2009 6,861,034'Priming mechanisms for drop ejection devices'2005 6,713,022'Devices for biofluid drop ejection'2004 6,595,618'Method and apparatus for filling and capping an acoustic ink printhead'2003 6,523,944'Ink delivery system for acoustic ink printing applications'2003 6,513,909'Method and apparatus for moving ink drops using an electric field and transfuse printing system using the same'2003 6,514,704'Quality control mechanism and process for a biofluid multi-ejector system'2003 6,484,975'Method and apparatus to achieve uniform ink temperatures in printheads'2002 6,464,337'Apparatus and method for acoustic ink printing using a bilayer printhead configuration'2002 6,447,086'Method and apparatus for achieving controlled RF switching ratios to maintain thermal uniformity in the acoustic focal spot of an acoustic ink printhead'2002 6,428,160'Method for achieving high quality aqueous ink-jet printing on plain paper at high print speeds'2002 6,428,159'Apparatus for achieving high quality aqueous ink-jet printing on plain paper at high print speeds'2002 6,350,012'Method and apparatus for cleaning/maintaining of an AIP type printhead'2002 6,336,699'Self-cleaning wet wipe method and apparatus for cleaning orifices in an AIP type printhead'2002 6,302,524'Liquid level control in an acoustic droplet emitter'2001 6,283,580'Method of operation of an acoustic ink jet droplet emitter utilizing high liquid flow rates'2001 6,199,970'Acoustic ink jet printhead design and method of operation utilizing ink cross-flow'2001 6,154,236'Acoustic ink jet printhead design and method of operation utilizing flowing coolant and an emission fluid'2000 6,134,291'Acoustic ink jet printhead design and method of operation utilizing flowing coolant and an emission fluid'2000 5,381,162'Method of operating an ink jet to reduce print quality degradation resulting from rectified diffusion'1995 5,170,177'Method of operating an ink jet to achieve high print quality and high print rate'1992 5,155,498'Method of operating an ink jet to reduce print quality degradation resulting from rectified diffusion'1992 5,124,716'Method and apparatus for printing with ink drops of varying sizes using a drop-on-demand ink jet print head'1992 5,087,930'Drop-on-demand ink jet print head'1992 4,883,219'Manufacture of ink jet print heads by diffusion bonding and brazing'1989 4,728,969'Air assisted ink jet head with single compartment ink chamber'1988

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1988–1995Patents assigned to TEKTRONIX INC (6)· patent assignee history

1989–2017Patents assigned to ROY JOY (5)· patent assignee history

1989–1992Based in Beaverton, OR, US· patent location history

1992–1995Based in Tigard, OR, US· patent location history

2000–2009Patents assigned to XEROX CORP (19)· patent assignee history

2000–2021Based in San Jose, CA, US· patent location history

2003Based in Freemont, CA, US· patent location history

2013–2020Patents assigned to THERANOS INC (7)· patent assignee history

2017–2020Based in Palo Alto, CA, US· patent location history

2019–2020Patents assigned to THERANOS IP CO LLC (3)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
XEROX CORP	19	2000–2009
THERANOS INC	7	2013–2020
TEKTRONIX INC	6	1988–1995
ROY JOYself	5	1989–2017
THERANOS IP CO LLC	3	2019–2020

Locations

Location	Patents	Span
San Jose, California, US	25	2000–2021
Palo Alto, California, US	4	2017–2020
Tigard, OR, US	3	1992–1995
Beaverton, OR, US	3	1989–1992
Freemont, California, US	1	2003