Patents by Inventor Thomas R. Strand
Thomas R. Strand has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10717278Abstract: An inkjet nozzle includes an aperture with a noncircular opening having a first segment substantially defined by a first polynomial equation and a second segment substantially defined by a second equation.Type: GrantFiled: January 20, 2011Date of Patent: July 21, 2020Assignee: Hewlett-Packard Development Company, L.P.Inventors: James A. Feinn, David P. Markel, Albert Nagao, Paul A. Richards, Thomas R. Strand, Erik D. Torniainen, Lawrence H. White
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Patent number: 10562304Abstract: An inkjet nozzle includes an aperture with a noncircular opening substantially defined by a polynomial equation. A droplet generator is also described which includes a firing chamber fluidically coupled to a fluid reservoir a heating resistor and a nozzle. The nozzle includes an aperture forming a passage from the firing chamber to the exterior of the droplet generator through a top hat layer. The nozzle is defined by a closed polynomial and has a mathematically smooth and mathematically continuous shape around aperture's perimeter wall, with two protrusions extending into the center of the aperture.Type: GrantFiled: September 24, 2018Date of Patent: February 18, 2020Assignee: Hewlett-Packard Development Company, L.P.Inventors: James A. Feinn, Albert Nagao, Thomas R. Strand, David R. Thomas, Erik D. Torniainen, Lawrence H. White
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Patent number: 10479086Abstract: In one example, a process for making a micro device assembly includes placing a micro device on a front part of a printed circuit board, molding a molding on the printed circuit board surrounding the micro device, and then forming a channel to the micro device in a back part of the printed circuit board.Type: GrantFiled: August 27, 2018Date of Patent: November 19, 2019Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Chien-Hua Chen, Thomas R Strand, Michael G Groh
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Patent number: 10252527Abstract: In some examples, a fluid nozzle includes an aperture comprising a first lobe that is shaped as an ellipse, and a second lobe that has a non-circular shape and has a different size than a size of the first lobe. The fluid nozzle further includes protrusions between the first and second lobes extending inward and forming a throat between the first and second lobes.Type: GrantFiled: December 7, 2017Date of Patent: April 9, 2019Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: James A. Feinn, David P. Markel, Albert Nagao, Thomas R. Strand, Paul A. Richards, Lawrence H. White, Erik D. Torniainen
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Patent number: 10232621Abstract: In one example, a process for making a micro device assembly includes placing a micro device on a front part of a printed circuit board, molding a molding on the printed circuit board surrounding the micro device, and then forming a channel to the micro device in a back part of the printed circuit board.Type: GrantFiled: May 12, 2014Date of Patent: March 19, 2019Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Chien-Hua Chen, Thomas R Strand, Michael G Groh
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Publication number: 20190023010Abstract: An Inkjet nozzle includes an aperture with a noncircular opening substantially defined by a polynomial equation. A droplet generator is also described which includes a firing chamber fluidically coupled to a fluid reservoir a heating resistor and a nozzle. The nozzle includes an aperture forming a passage from the firing chamber to the exterior of the droplet generator through a top hat layer. The nozzle is defined by a closed polynomial and has a mathematically smooth and mathematically continuous shape around aperture's perimeter wall, with two protrusions extending into the center of the aperture.Type: ApplicationFiled: September 24, 2018Publication date: January 24, 2019Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: James A. Feinn, Albert Nagao, Thomas R. Strand, David R. Thomas, Erik D. Torniainen, Lawrence H. White
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Publication number: 20180361746Abstract: In one example, a process for making a micro device assembly includes placing a micro device on a front part of a printed circuit board, molding a molding on the printed circuit board surrounding the micro device, and then forming a channel to the micro device in a back part of the printed circuit board.Type: ApplicationFiled: August 27, 2018Publication date: December 20, 2018Inventors: Chien-Hua Chen, Thomas R Strand, Michael G Groh
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Patent number: 10112393Abstract: An inkjet nozzle includes an aperture with a noncircular opening substantially defined by a polynomial equation. A droplet generator is also described which includes a firing chamber fluidically coupled to a fluid reservoir, a heating resistor and a nozzle. The nozzle includes an aperture forming a passage from the firing chamber to the exterior of the droplet generator through a top hat layer. The nozzle is defined by a closed polynomial and has a mathematically smooth and mathematically continuous shape around aperture's perimeter wall, with two protrusions extending into the center of the aperture.Type: GrantFiled: March 31, 2010Date of Patent: October 30, 2018Assignee: Hewlett-Packard Development Company, L.P.Inventors: James A. Feinn, Albert Nagao, Thomas R. Strand, David R. Thomas, Erik D. Tomiainen, Lawrence H. White
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Publication number: 20180221873Abstract: An example microfluidic device comprises a substrate having a first surface and a cover layer above the first surface. The cover layer and the first surface form a microfluidic channel and a chamber. The example microfluidic device further comprises a functional port in the cover layer over the chamber and at least one developer port in the cover layer over the microfluidic channel. The developer port is above a portion of the microfluidic channel that is not proximate to the functional port.Type: ApplicationFiled: December 14, 2015Publication date: August 9, 2018Applicant: Hewlett-Packard Development Company, L.P.Inventors: JEREMY HARLAN DONALDSON, MICHAEL HAGER, THOMAS R STRAND, ALEXANDER GOVYADINOV
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Publication number: 20180104953Abstract: In some examples, a fluid nozzle includes an aperture comprising a first lobe that is shaped as an ellipse, and a second lobe that has a non-circular shape and has a different size than a size of the first lobe. The fluid nozzle further includes protrusions between the first and second lobes extending inward and forming a throat between the first and second lobes.Type: ApplicationFiled: December 7, 2017Publication date: April 19, 2018Inventors: James A. Feinn, David P. Markel, Albert Nagao, Thomas R. Strand, Paul A. Richards, Lawrence H. White, Erik D. Torniainen
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Publication number: 20170066242Abstract: In one example, a process for making a micro device assembly includes placing a micro device on a front part of a printed circuit board, molding a molding on the printed circuit board surrounding the micro device, and then forming a channel to the micro device in a back part of the printed circuit board.Type: ApplicationFiled: May 12, 2014Publication date: March 9, 2017Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Chien-Hua CHEN, Thomas R Strand, Michael G Groh
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Publication number: 20160346793Abstract: A method to control puddling on a fluid dispense head, comprising limiting the height of a puddle of fluid over a fluid dispensing nozzle while simultaneously limiting the spread of the puddle laterally away from the nozzle.Type: ApplicationFiled: August 8, 2016Publication date: December 1, 2016Inventors: Thomas R. Strand, Jeffrey A. Nielsen, James A. Feinn, Stan E. Leigh
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Patent number: 9427752Abstract: Methods and apparatus are provided related to fluid dispensing heads. A dispense head is formed to define a plurality of fluid jetting nozzles and a surface pattern. The surface pattern is characterized by one or more voids extending inward from an outer surface of the dispense head. Fluid puddle formation during operation of the dispense head is limited in volume by way of the surface pattern. Fluid puddle limiting reduces or eliminates dispensing errors to an entity, undesirable artifacts from resulting on a printed media, or similar problems.Type: GrantFiled: September 30, 2011Date of Patent: August 30, 2016Assignee: Hewlett-Packard Development Company, L.P.Inventors: Thomas R Strand, Jeffrey A Nielsen, James A Feinn, Stan E Leigh
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Patent number: 8919928Abstract: A fluid ejection device includes a firing chamber having an ejection orifice opposite a chamber floor, a heating element and a mesa projecting from the chamber floor, the mesa is spaced from the heating element to define a passive zone between the mesa and heating element.Type: GrantFiled: January 31, 2012Date of Patent: December 30, 2014Assignee: Hewlett-Packard Development Company, L.P.Inventors: Lawrence H. White, Peter Mardilovich, Erik D. Torniainen, James A. Feinn, Thomas R. Strand, Tony S. Cruz-Uribe
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Publication number: 20140217201Abstract: Methods and apparatus are provided related to fluid dispensing heads. A dispense head is formed to define a plurality of fluid jetting nozzles and a surface pattern. The surface pattern is characterized by one or more voids extending inward from an outer surface of the dispense head. Fluid puddle formation during operation of the dispense head is limited in volume by way of the surface pattern. Fluid puddle limiting reduces or eliminates dispensing errors to an entity, undesirable artifacts from resulting on a printed media, or similar problems.Type: ApplicationFiled: September 30, 2011Publication date: August 7, 2014Inventors: Thomas R. Strand, Jeffrey A. Nielsen, James Feinn, Stan E. Leigh
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Publication number: 20130293638Abstract: A fluid ejection device includes a firing chamber having an ejection orifice opposite a chamber floor, a heating element and a mesa projecting from the chamber floor, the mesa is spaced from the heating element to define a passive zone between the mesa and heating element.Type: ApplicationFiled: January 31, 2012Publication date: November 7, 2013Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L..Inventors: Lawrence H. White, Peter Mardilovich, Erik D. Torniainen, James A. Feinn, Thomas R. Strand, Tony S. Cruz-Uribe
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Publication number: 20130187984Abstract: An inkjet nozzle includes an aperture with a noncircular opening having a first segment substantially defined by a first polynomial equation and a second segment substantially defined by a second equation.Type: ApplicationFiled: January 20, 2011Publication date: July 25, 2013Inventors: James A. Feinn, David P. Markel, Alberto Nagao, Thomas R. Strand, Paul A. Richards, Lawrence H. White, Erik D. Tomiainen
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Publication number: 20130021411Abstract: An inkjet nozzle includes an aperture with a noncircular opening substantially defined by a polynomial equation. A droplet generator is also described which includes a firing chamber fluidically coupled to a fluid reservoir, a heating resistor and a nozzle. The nozzle includes an aperture forming a passage from the firing chamber to the exterior of the droplet generator through a top hat layer. The nozzle is defined by a closed polynomial and has a mathematically smooth and mathematically continuous shape around aperture's perimeter wall, with two protrusions extending into the center of the aperture.Type: ApplicationFiled: March 31, 2010Publication date: January 24, 2013Inventors: James A. Feinn, Albert Nagao, Thomas R. Strand, David R. Thomas, Erik D. Tomiainen, Lawrence H. White
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Publication number: 20120019597Abstract: An inkjet printhead includes a substrate having an ink slot formed through its center. Integrated circuitry is formed on both a first side and a second side of the center ink slot. A conductor trace is routed across the ink slot to provide electrical communication between the integrated circuitry on the first and second sides of the slot.Type: ApplicationFiled: October 8, 2009Publication date: January 26, 2012Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Chien-Hua Chen, Thomas R. Strand, Ricky L. Brenneman
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Patent number: 7979987Abstract: A method of manufacturing a fluid ejection device includes providing a barrier layer and an orifice layer on a substrate, laminating a layer of photo-resist over a substantially planar surface of the orifice layer, forming an orifice in the orifice layer, and forming a counterbore in the layer of photo-resist, with forming a counterbore in the layer of photo-resist including exposing a portion of the substantially planar surface of the orifice layer within the counterbore.Type: GrantFiled: December 3, 2007Date of Patent: July 19, 2011Assignee: Hewlett-Packard Development Company, L.P.Inventors: Thomas R. Strand, Manish Giri, Jeremy Donaldson, William A. Keese, Mohammed Shaarawi, Randall Orson Willard