Inventor

TORGERSON JOSEPH M

US65 patents

⚠️ This page may combine multiple inventors who share the name “TORGERSON JOSEPH M”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

HEWLETT PACKARD DEVELOPMENT CO

24 patents

US6808241B2Oct 26, 2004

Fluid ejection device

HEWLETT PACKARD DEVELOPMENT CO46 citations93

US6890064B2May 10, 2005

Energy balanced printhead design

HEWLETT PACKARD DEVELOPMENT CO12 citations92

US6866364B2Mar 15, 2005

Printhead having drop generators in staggered axis groups

HEWLETT PACKARD DEVELOPMENT CO17 citations92

US6860587B2Mar 1, 2005

Ink jet printhead

HEWLETT PACKARD DEVELOPMENT CO26 citations92

US6799822B2Oct 5, 2004

High quality fluid ejection device

HEWLETT PACKARD DEVELOPMENT CO19 citations92

US6722759B2Apr 20, 2004

Ink jet printhead

HEWLETT PACKARD DEVELOPMENT CO24 citations92

US6585352B1Jul 1, 2003

Compact high-performance, high-density ink jet printhead

HEWLETT PACKARD DEVELOPMENT CO41 citations92

US8348385B2Jan 8, 2013

Printhead die

HEWLETT PACKARD DEVELOPMENT CO13 citations84

US7543906B2Jun 9, 2009

Fluid ejection device with identification cells

HEWLETT PACKARD DEVELOPMENT CO8 citations84

US7488056B2Feb 10, 2009

Fluid ejection device

HEWLETT PACKARD DEVELOPMENT CO8 citations84

US7278703B2Oct 9, 2007

Fluid ejection device with identification cells

HEWLETT PACKARD DEVELOPMENT CO13 citations84

US6902252B1Jun 7, 2005

Fluid ejection device with staggered ink drop generators

HEWLETT PACKARD DEVELOPMENT CO14 citations84

US6726311B2Apr 27, 2004

Energy balanced printhead design

HEWLETT PACKARD DEVELOPMENT CO10 citations74

US10378946B2Aug 13, 2019

Ink level sensing

HEWLETT PACKARD DEVELOPMENT CO1 citations73

US10082414B2Sep 25, 2018

Ink level sensing

HEWLETT PACKARD DEVELOPMENT CO4 citations73

US9987841B2Jun 5, 2018

Inkjet print head with shared data lines

HEWLETT PACKARD DEVELOPMENT CO2 citations73

US6977185B2Dec 20, 2005

Printhead integrated circuit

HEWLETT PACKARD DEVELOPMENT CO7 citations73

US6698857B2Mar 2, 2004

Method and apparatus for transferring information to a printhead

HEWLETT PACKARD DEVELOPMENT CO11 citations73

US7722144B2May 25, 2010

Fluid ejection device

HEWLETT PACKARD DEVELOPMENT CO4 citations63

US7278715B2Oct 9, 2007

Device with gates configured in loop structures

HEWLETT PACKARD DEVELOPMENT CO2 citations63

US7247952B2Jul 24, 2007

Optical targets

HEWLETT PACKARD DEVELOPMENT CO2 citations63

US7048355B2May 23, 2006

High-performance, high-density ink jet printhead having multiple modes of operation

HEWLETT PACKARD DEVELOPMENT CO2 citations63

US6883889B2Apr 26, 2005

Fluid ejection device

HEWLETT PACKARD DEVELOPMENT CO2 citations63

US7815287B2Oct 19, 2010

Fluid ejection device and method

HEWLETT PACKARD DEVELOPMENT CO5 citations62

HEWLETT PACKARD CO

18 patents

US6491377B1Dec 10, 2002

High print quality printhead

HEWLETT PACKARD CO93 citations97

US6543883B1Apr 8, 2003

Fluid ejection device with drive circuitry proximate to heating element

HEWLETT PACKARD CO43 citations93

US6481817B1Nov 19, 2002

Method and apparatus for ejecting ink

HEWLETT PACKARD CO35 citations92

US6431686B2Aug 13, 2002

Fluid ejection device controlled by electrically isolated primitives

HEWLETT PACKARD CO17 citations92

US6422676B1Jul 23, 2002

Compact ink jet printhead

HEWLETT PACKARD CO25 citations92

US6398347B1Jun 4, 2002

Energy balanced ink jet printhead

HEWLETT PACKARD CO28 citations92

US6315389B1Nov 13, 2001

Printhead having different center to center spacings between rows of nozzles

HEWLETT PACKARD CO21 citations92

US6309053B1Oct 30, 2001

Ink jet printhead having a ground bus that overlaps transistor active regions

HEWLETT PACKARD CO26 citations92

US6267468B1Jul 31, 2001

Printhead substrate having a mixture of single and double sided elongate ink feed channels

HEWLETT PACKARD CO49 citations92

US6234598B1May 22, 2001

Shared multiple terminal ground returns for an inkjet printhead

HEWLETT PACKARD CO33 citations92

US6030066AFeb 29, 2000

Method and apparatus for ink jet printer color balance calibration and correction

HEWLETT PACKARD CO36 citations92

US6402279B1Jun 11, 2002

Inkjet printhead and method for the same

HEWLETT PACKARD CO15 citations84

US6190000B1Feb 20, 2001

Method and apparatus for masking address out failures

HEWLETT PACKARD CO19 citations82

US6523935B2Feb 25, 2003

Narrow ink jet printhead

HEWLETT PACKARD CO12 citations74

US6488363B2Dec 3, 2002

Energy balanced printhead design

HEWLETT PACKARD CO10 citations74

US6412917B1Jul 2, 2002

Energy balanced printhead design

HEWLETT PACKARD CO9 citations74

US6478404B2Nov 12, 2002

Ink jet printhead

HEWLETT PACKARD CO7 citations73

US6305774B1Oct 23, 2001

Printhead substrate having an ink jet primitive structure that spans both edges of an ink feed channel

HEWLETT PACKARD CO7 citations73

HEWLETT PACKARD DEVELOPMENT CO LP

2 patents

US9487017B2Nov 8, 2016

Fluid ejection device with integrated ink level sensor

HEWLETT PACKARD DEVELOPMENT CO LP41 citations98

US9776412B2Oct 3, 2017

Fluid ejection device with integrated ink level sensor

HEWLETT PACKARD DEVELOPMENT CO LP35 citations94

GE NING

1 patent

US9599500B2Mar 21, 2017

Ink level sensor and related methods

GE NING35 citations93

NESS ERIK D

1 patent

US8474943B2Jul 2, 2013

Secure access to fluid cartridge memory

NESS ERIK D24 citations89

TORGERSON JOSEPH M

1 patent

US9707752B2Jul 18, 2017

Inkjet print head with shared data lines

TORGERSON JOSEPH M9 citations79

AXTELL JAMES P

1 patent

US8960860B2Feb 24, 2015

Printhead die

AXTELL JAMES P7 citations79

BAKKER CHRIS

1 patent

US8444255B2May 21, 2013

Power distribution in a thermal ink jet printhead

BAKKER CHRIS14 citations76

LEIGH STAN E

1 patent

US8460947B2Jun 11, 2013

Fluid ejection device and method

LEIGH STAN E5 citations67

Showing the top 50 of 65 patents by PatentIndex Score.