Patents by Inventor Erik D. Torniainen

Erik D. Torniainen 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).

  • Patent number: 10300692
    Abstract: An inkjet printhead includes an inkjet nozzle with a main actuator and a peripheral actuator in a firing chamber. A determination is made as to whether the inkjet nozzle has sat idle, e.g., not firing for a threshold period of time. When the inkjet nozzle has sat idle, both the main actuator and the peripheral actuator are activated to jet at least one ink drop. When the inkjet nozzle has not sat idle, only the main actuator is activated to jet ink drops.
    Type: Grant
    Filed: October 25, 2017
    Date of Patent: May 28, 2019
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Brian M. Taff, Erik D. Torniainen, Daniel A. Kearl
  • Publication number: 20190151846
    Abstract: A microfluidic bead-packing method includes activating a first micropump to transfer active microbeads through an inlet microchannel from a bead suspension reservoir to an adsorbing channel; packing the microbeads in the adsorbing channel; and activating a second micropump to reverse flow through at least a portion of the inlet microchannel and to transfer a sample fluid through the inlet microchannel from a sample reservoir to the adsorbing channel such that the sample fluid interacts with the packed microbeads.
    Type: Application
    Filed: July 12, 2016
    Publication date: May 23, 2019
    Inventors: Pavel KORNILOVICH, Alexander GOVYADINOV, David P. MARKEL, Erik D. TORNIAINEN
  • Publication number: 20190143327
    Abstract: A microfluidic filtering system may include a first microfluidic channel, a first pump to move fluid along the first microfluidic channel in a first direction, a second microfluidic channel, a second pump to move fluid along the second microfluidic channel in a second direction opposite to the first direction and a filter channel extending between and interconnecting the first microfluidic channel and the second microfluidic channel.
    Type: Application
    Filed: July 15, 2016
    Publication date: May 16, 2019
    Inventors: Pavel KORNILOVICH, Alexander GOVYADINOV, David P. MARKEL, Erik D. TORNIAINEN
  • Patent number: 10286366
    Abstract: In one embodiment, a microfluidic mixing device includes a mixing channel, a fluid inlet chamber to pass fluids into the mixing channel, an axis-asymmetric mixing actuator integrated within the channel to cause fluid displacements that mix the fluids as they flow through the channel, and an outlet chamber to receive the mixed fluids.
    Type: Grant
    Filed: September 24, 2012
    Date of Patent: May 14, 2019
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Alexander Govyadinov, Erik D. Torniainen, David P. Markel, Pavel Kornilovich
  • Publication number: 20190134987
    Abstract: A fluid ejection device includes a fluid slot, two laterally adjacent fluid ejection chambers each having a drop ejecting element therein, a fluid circulation path communicated with the fluid slot and each of the two laterally adjacent fluid ejection chambers, and a fluid circulating element within the fluid circulation path, with the fluid circulating element laterally adjacent at least one of the two laterally adjacent fluid ejection chambers, and the two laterally adjacent fluid ejection chambers to substantially simultaneously eject drops of fluid therefrom such that the drops of fluid are to coalesce during flight.
    Type: Application
    Filed: July 29, 2016
    Publication date: May 9, 2019
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Nicholas McGuinness, Alexander Govyadinov, Tsuyoshi Yamashita, Erik D Torniainen, David P Markel
  • Patent number: 10272691
    Abstract: A network of microfluidic channels may include at least three loops interconnected at a junction. Each of the loops may include a fluid channel having a length extending from the junction to a second end; and a fluid actuator along the fluid channel and located at a first distance from junction along the length of the fluid channel and at a second distance less than the first distance from the second end. Activation of the fluid actuator of selected ones of the at least three loops may selectively produce net fluid flow in different directions about the loops. In one implementation, a fluid channel having a fluid actuator may have a bridging portion that extends over another fluid channel.
    Type: Grant
    Filed: July 8, 2016
    Date of Patent: April 30, 2019
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Pavel Kornilovich, Alexander Govyadinov, David P. Markel, Erik D. Torniainen
  • Publication number: 20190111680
    Abstract: A fluid ejection die includes a substrate including an array of nozzles.
    Type: Application
    Filed: June 29, 2016
    Publication date: April 18, 2019
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Michael W Cumbie, Chien-Hua Chen, Erik D. Torniainen
  • Patent number: 10252527
    Abstract: 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: Grant
    Filed: December 7, 2017
    Date of Patent: April 9, 2019
    Assignee: 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
  • Publication number: 20190054469
    Abstract: In an example implementation, a method of microfluidic filtering includes activating a first fluid pump within a microfluidic channel to cause a forward flow of fluid through the microfluidic channel and through a filter of a filter loop. The filter loop intersects the microfluidic channel at a loop entry and at a loop exit. The method includes activating a second fluid pump to cause a reverse flow of fluid through the filter.
    Type: Application
    Filed: April 28, 2016
    Publication date: February 21, 2019
    Inventors: Erik D. Torniainen, Nick McGuinness, David P. Markel, Alexander Govyadinov
  • Patent number: 10207516
    Abstract: A fluid ejection device includes a fluid slot, a first fluid ejection chamber communicated with the fluid slot and including a first drop ejecting element, a second fluid ejection chamber including a second drop ejecting element, and a fluid circulation path including a first portion communicated with the fluid slot and the second fluid ejection chamber, and a second portion communicated with the first fluid ejection chamber and the second fluid ejection chamber, with the fluid circulation path including a fluid circulating element within the first portion.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: February 19, 2019
    Assignee: HEWLETT PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Alexander Govyadinov, Tsuyoshi Yamashita, Erik D Torniainen
  • Publication number: 20190048309
    Abstract: In an example implementation, a method of cell lysis includes moving cell fluid from a first reservoir through a microfluidic channel toward a second reservoir, activating a lysing element multiple times as a cell from the cell fluid passes through the microfluidic channel, and moving lysate fluid that results from the activating through the microfluidic channel and into the second reservoir.
    Type: Application
    Filed: April 22, 2016
    Publication date: February 14, 2019
    Inventors: Alexander Govyadinov, Erik D. Torniainen, David P. Markel, Pavel Kornilovich
  • Patent number: 10197188
    Abstract: In an example implementation, a method of controlling a microfluidic valve includes activating a first inertial pump at a first frequency, and a second inertial pump at a second frequency to create a first fluid flow pattern within a microfluidic valve. The method also includes adjusting at least one of the first frequency and the second frequency to change the first fluid flow pattern to a second fluid flow pattern.
    Type: Grant
    Filed: August 15, 2014
    Date of Patent: February 5, 2019
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Alexander Govyadinov, Erik D Torniainen, David P Markel, Pavel Kornilovich
  • Publication number: 20190023010
    Abstract: 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: Application
    Filed: September 24, 2018
    Publication date: January 24, 2019
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: James A. Feinn, Albert Nagao, Thomas R. Strand, David R. Thomas, Erik D. Torniainen, Lawrence H. White
  • Patent number: 10173435
    Abstract: A fluid ejection device including, at least, one recirculation system is disclosed. Such recirculation system contains, at least, one drop generator, recirculation channels that include an inlet channel, an outlet channel and a connection channel and a fluid feedhole that communicates with the drop generator via the inlet channel and the outlet channel of the recirculation channel. The recirculation channels can be asymmetrical with reference to the drop generator.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: January 8, 2019
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Alexander Govyadinov, Erik D. Torniainen, David P. Markel
  • Publication number: 20190001335
    Abstract: Examples include polymerase chain reaction (PCR) devices. Example PCR devices comprise a fluid input, ejection nozzles, and a set of microfluidic channels that fluidly connect the fluid input and the ejection nozzles. Each microfluidic channel comprises a reaction chamber, and examples further comprise at least one heating element, where the at least one heating element is positioned in the reaction chamber of each microfluidic channel. The at least one heating element is to heat fluid in the reaction chamber of each fluid channel. The device may eject fluid via the ejection nozzles.
    Type: Application
    Filed: January 8, 2016
    Publication date: January 3, 2019
    Inventors: Erik D. TORNIAINEN, Alexander GOVYADINOV, Pavel KORNILOVICH, David P. MARKEL
  • Patent number: 10132303
    Abstract: In one embodiment, a method of generating net fluid flow in a microfluidic network includes, with a fluid actuator integrated asymmetrically within a microfluidic channel, generating compressive and tensile fluid displacements that are temporally asymmetric in duration.
    Type: Grant
    Filed: February 15, 2011
    Date of Patent: November 20, 2018
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Alexander Govyadinov, Erik D Torniainen, Pavel Kornilovich, David P Markel
  • Patent number: 10112408
    Abstract: A fluid ejection die has a substrate through which an array of fluid feed holes is formed. The fluid feed holes are separated by ribs. Each fluid feed hole is to guide fluid to an array of drop generators.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: October 30, 2018
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Chien Hua Chen, Michael W Cumbie, Erik D Torniainen
  • Publication number: 20180290458
    Abstract: A fluid recirculation channel for dispensing a plurality of fluid drop weights includes a number of sub-channels. The sub-channels include at least one pump channel, and a plurality of drop generator channels fluidically coupled to the at least one pump channel. The fluid recirculation channel further includes a number of pump generators incorporated into the at least one pump channel, a number of drop generators incorporated into drop generator channels, and a plurality of nozzles defined within the drop generator channels, the nozzles being at least as numerous as the number of drop generators.
    Type: Application
    Filed: July 14, 2015
    Publication date: October 11, 2018
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Alexander Govyadinov, Ron Burns, Erik D. Torniainen, Galen P. Cook, David P. Markel, Garrard Hume, Chris Bakker
  • Publication number: 20180272340
    Abstract: Example fluidic channels for microfluidic devices are disclosed. In examples disclosed herein, an example microfluidic device includes a body having a microfluidic network. The microfluidic network includes a main fluid channel to transport a biological fluid from a first cavity of the microfluidic network to a second cavity of the microfluidic network. An auxiliary fluid channel is in fluid communication with to the main fluid channel. The auxiliary fluid channel has a first end and a second end. The first end is in fluid communication with the main fluid channel and the second end is spaced from the main fluid channel. A fluid actuator is positioned in the auxiliary fluid channel to induce fluid flow in the main fluid channel.
    Type: Application
    Filed: September 25, 2015
    Publication date: September 27, 2018
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Alexander Govyadinov, Erik D. Torniainen, Pavel Kornilovich, David P. Markel
  • Patent number: 10076914
    Abstract: A fluid ejection die has a substrate through which an array of fluid feed holes is formed. The fluid feed holes are separated by ribs. Each fluid feed hole is to guide fluid to an array of drop generators.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: September 18, 2018
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Chien Hua Chen, Michael W Cumbie, Erik D Torniainen