Patents by Inventor Jeffrey A Nielsen

Jeffrey A Nielsen 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: 11402400
    Abstract: A system for partitioning a liquid sample, the system including: an ejection device, the ejection device including an array of nozzles, wherein adjacent nozzles are separated by a constant distance in a first axis; and a microfluidics device including: a plurality of intake ports to receive a deposited droplet, wherein pairs of intake ports are separated by the same constant distance in the same first axis such that adjacent nozzles can simultaneously eject droplets to different intake ports.
    Type: Grant
    Filed: October 13, 2017
    Date of Patent: August 2, 2022
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Viktor Shkolnikov, Adam Higgins, Jeffrey A. Nielsen
  • Patent number: 11383230
    Abstract: A digital dispense apparatus includes at least one fluid dispense device, at least one reservoir fluidically connected to the at least one fluid dispense device, a monolithic carrier structure carrying the at least one fluid dispense device and reservoir, the monolithic carrier forming fluid routing between the reservoir and the fluid dispense device.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: July 12, 2022
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Jeffrey A. Nielsen, Michael W. Cumbie, Devin Alexander Mourey, Silam J. Choy, Kenneth Ward, Christie Dudenhoefer
  • Publication number: 20220203349
    Abstract: Aspects of the present disclosure relate to evaporation compensation in fluidic devices. An example apparatus for evaporation compensation includes an assessment circuit to determine an amount of evaporation of a volume dispensed in a microwell of a fluidic device. The amount of evaporation may be determined based on the volume in the microwell, and an amount of time after dispensing the volume in the microwell. A compensation circuit may determine, based on the amount of evaporation, a compensation factor for the microwell including an amount of a normalizing fluid to compensate for the amount of evaporation. The compensation circuit may also create a normalization profile for the fluidic device, including an association between the fluidic device and the compensation factor. A dispensing circuit may dispense the normalizing fluid in the microwell according to the normalization profile.
    Type: Application
    Filed: July 31, 2019
    Publication date: June 30, 2022
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Jeffrey A. NIELSEN, Roberto A. PUGLIESE
  • Publication number: 20220194078
    Abstract: In one example in accordance with the present disclosure, a fluid ejection system is described. The fluid ejection system includes a frame to retain a number of fluid ejection devices. Each fluid ejection device includes a reservoir disposed on a first side of the frame and a fluid ejection die disposed on an opposite side of the frame. Each fluid ejection die includes 1) a fluid feed slot formed in a substrate to receive fluid from the reservoir, 2) an array of nozzles formed in the substrate to eject fluid, and 3) an ejection adjustment system to selectively adjust an amount of fluid ejected from the fluid ejection devices.
    Type: Application
    Filed: September 30, 2019
    Publication date: June 23, 2022
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Jeffrey A. Nielsen, Matthew David Smith, Roberto A. Pugliese
  • Patent number: 11364726
    Abstract: An example fluid dispensing system includes a printhead assembly comprising a printhead to dispense a given fluid in a printing process; and a first memory storing an identifier of the given fluid. The example fluid dispensing system further includes an accessory to interact with the printhead in a cleaning process or a storage process. The example fluid dispensing system further includes a second memory that is located with the accessory. The example fluid dispensing system further includes a read-write device to: read the identifier of the given fluid from the first memory; read the second memory; and, when the second memory does not store a fluid identifier, write the identifier of the given fluid to the second memory.
    Type: Grant
    Filed: December 26, 2018
    Date of Patent: June 21, 2022
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Jeffrey A. Nielsen
  • Patent number: 11364492
    Abstract: A digital dispense apparatus comprising a plurality of fluid dispense devices, at least one reservoir connected to the plurality of fluid dispense devices to deliver fluid to the plurality of fluid dispense devices, at least one contact pad array, and a single monolithic carrier structure.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: June 21, 2022
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Jeffrey A. Nielsen, Michael W. Cumbie, Devin Alexander Mourey, Silam J. Choy, Christie Dudenhoefer, Kenneth Ward
  • Patent number: 11366125
    Abstract: Examples described herein also provide a substrate conveyance system. The substrate conveyance system may include a conveyor surface to convey a number of substrates, and a number of apertures defined in the conveyor surface between the substrates as positioned on the conveyor surface. The location of the apertures is based on a location at which at least one reagent module dispenses a reagent.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: June 21, 2022
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Jeffrey A. Nielsen, Christie Dudenhoefer
  • Publication number: 20220168773
    Abstract: An alignment system, in an example, may include a substrate comprising at least one nanowell, at least one fluid ejection device comprising at least one die, the at least one die comprising as least one nozzle, and an alignment device to align the at least one nozzle to the at least one nanowell.
    Type: Application
    Filed: February 15, 2022
    Publication date: June 2, 2022
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Roberto A. Pugliese, Jeffrey A. Nielsen, Christie Dudenhoefer, Craig Olbrich, Debora J. Thomas
  • Publication number: 20220146544
    Abstract: Aspects of the present disclosure relate to evaporation compensation in fluidic devices. An example apparatus for evaporation compensation includes an assessment circuit to determine an amount of evaporation of a volume dispensed in a microwell of a fluidic device. The amount of evaporation may be determined based on the volume in the microwell, and an amount of time after dispensing the volume in the microwell. A compensation circuit may determine, based on the amount of evaporation, a compensation factor for the microwell including an amount of a normalizing fluid to compensate for the amount of evaporation. The compensation circuit may also create a normalization profile for the fluidic device, including an association between the fluidic device and the compensation factor. A dispensing circuit may dispense the normalizing fluid in the microwell according to the normalization profile.
    Type: Application
    Filed: July 31, 2019
    Publication date: May 12, 2022
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Diane R. Hammerstad, Jeffrey A. Nielsen, Christie Dudenhoefer, Matthew Smith
  • Patent number: 11278928
    Abstract: An alignment system, in an example, may include a substrate comprising at least one nanowell, at least one fluid ejection device comprising at least one die, the at least one die comprising as least one nozzle, and an alignment device to align the at least one nozzle to the at least one nanowell.
    Type: Grant
    Filed: January 30, 2018
    Date of Patent: March 22, 2022
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Roberto A. Pugliese, Jeffrey A. Nielsen, Christie Dudenhoefer, Craig Olbrich, Debora J. Thomas
  • Patent number: 11278888
    Abstract: An example device includes a first microfluidic channel in communication with a fluid reservoir to receive cell-containing fluid from the fluid reservoir. The device further includes a second microfluidic channel in communication with the fluid reservoir to receive cell-containing fluid from the fluid reservoir. The device further includes a first sensor disposed at the first microfluidic channel, a second sensor disposed at the second microfluidic channel, a first dispense nozzle disposed at an end of the first microfluidic channel, and a second dispense nozzle disposed at an end of the second microfluidic channel. The first microfluidic channel is shaped to convey cells of a first size range, and the second microfluidic channel is shaped to convey cells of a second size range that is different from the first size range.
    Type: Grant
    Filed: April 3, 2018
    Date of Patent: March 22, 2022
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Jeffrey A. Nielsen, Debora J. Thomas, Kathryn Cyr
  • Patent number: 11253850
    Abstract: An apparatus includes a pipette dispenser to control dispensing of a volume to a dispensing location. A tip is operatively coupled to the pipette dispenser. The tip includes an electromechanical print head to dispense the volume from the pipette dispenser to the dispensing location based on a command from the pipette dispenser that indicates an amount of the volume to be dispensed from the print head.
    Type: Grant
    Filed: July 14, 2016
    Date of Patent: February 22, 2022
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Matthew David Smith, Christie Dudenhoefer, Jeffrey A. Nielsen, Kenneth Ward, Hilary Ely
  • Patent number: 11203017
    Abstract: According to an example, a microfluidic apparatus may include a channel, a foyer, in which the foyer is in fluid communication with the channel and in which the channel has a smaller width than the foyer, a sensor to sense a property of a fluid passing through the channel, a nozzle in fluid communication with the foyer, and an actuator positioned in line with the nozzle. The microfluidic apparatus may also include a controller to determine whether the sensed property of the fluid meets a predetermined condition and to perform a predefined action in response to the sensed property of the fluid meeting the predetermined condition.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: December 21, 2021
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Jeffrey A Nielsen, Manish Giri, Chantelle Domingue, Kenneth Ward, Christie Dudenhoefer, Matthew David Smith, Joshua M. Yu, Diane R. Hammerstad, Hilary Ely
  • Publication number: 20210339537
    Abstract: An example fluid dispensing system includes a printhead assembly comprising a printhead to dispense a given fluid in a printing process; and a first memory storing an identifier of the given fluid. The example fluid dispensing system further includes an accessory to interact with the printhead in a cleaning process or a storage process. The example fluid dispensing system further includes a second memory that is located with the accessory. The example fluid dispensing system further includes a read-write device to: read the identifier of the given fluid from the first memory; read the second memory; and, when the second memory does not store a fluid identifier, write the identifier of the given fluid to the second memory.
    Type: Application
    Filed: December 26, 2018
    Publication date: November 4, 2021
    Inventor: Jeffrey A. Nielsen
  • Publication number: 20210311081
    Abstract: A system for dispensing liquid onto a substrate, the system including: a liquid ejector to dispensing liquid droplets onto the substrate; and a motion controller to provide relative motion between the liquid ejector and the substrate, wherein the order of droplet dispensing is randomized relative to deposition locations on the substrate for a first plurality of the dispensed droplets.
    Type: Application
    Filed: November 2, 2018
    Publication date: October 7, 2021
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: David H. Ochs, Kenneth Ward, Jeffrey A. Nielsen
  • Patent number: 11110714
    Abstract: An apparatus includes a print head coupled to a substrate to dispense fluid from the substrate in response to a command. A reservoir coupled to the substrate transports the fluid to the print head. A preloaded storage container mounted on the reservoir stores the fluid and provides the fluid to the reservoir in response to pressure applied to the container.
    Type: Grant
    Filed: August 28, 2017
    Date of Patent: September 7, 2021
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Jeffrey A. Nielsen, Michael W. Cumbie, Chien-Hua Chen
  • Publication number: 20210165007
    Abstract: In one example in accordance with the present disclosure, a fluidic die is described. The fluidic die includes a plurality of ejection subassemblies. Each ejection subassembly includes an ejection chamber to hold a volume of fluid and an opening through which the volume of fluid is ejected via a fluid actuator. A pitch of the ejection subassemblies aligns with a spatial arrangement of nanowells in an array of nanowells on a substrate.
    Type: Application
    Filed: June 4, 2018
    Publication date: June 3, 2021
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Jeffrey A. NIELSEN, Christie DUDENHOEFER, Debora J. THOMAS, Roberto A. PUGLIESE, Diane R. HAMMERSTAD
  • Patent number: 11007529
    Abstract: According to an example, a microfluidic apparatus may include a fluid slot, a foyer in fluid communication with the fluid slot via a channel having a relatively smaller width than the foyer, a sensor to detect a presence of a particle of interest in a fluid passing through the channel, a nozzle in fluid communication with the foyer, and an actuator positioned in line with the nozzle. The microfluidic apparatus may also include a controller to receive information from the sensor, determine, from the received information, whether a particle of interest has passed through the channel, and control the actuator to expel fluid in the foyer through the nozzle based upon the determination.
    Type: Grant
    Filed: July 26, 2016
    Date of Patent: May 18, 2021
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Jeffrey A Nielsen, Manish Giri, Chantelle Domingue, Kenneth Ward, Christie Dudenhoefer, Matthew David Smith, Joshua M. Yu, Hilary Ely
  • Publication number: 20210138470
    Abstract: A fluid dispenser may include a fluid ejector to eject fluid in a direction and a capillary pick up to wick fluid to the fluid ejector with capillary action. The capillary pick up may project beyond the fluid ejector in the direction.
    Type: Application
    Filed: October 24, 2017
    Publication date: May 13, 2021
    Inventors: Viktor Shkolnikov, Michael W. Cumbie, Jeffrey A. Nielsen
  • Publication number: 20210096147
    Abstract: A reagent module may include a first reagent dispensing device to dispense a first range of volumes of a first reagent, and a second reagent dispensing device to dispense a second range of volumes of a second reagent where the second range of volumes is more voluminous relative to the first range of volumes. The reagent dispensing system may further include a third reagent dispensing device to dispense a third range of volumes of a third reagent where the third range of volumes is more voluminous relative to the second range of volumes.
    Type: Application
    Filed: July 18, 2017
    Publication date: April 1, 2021
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Christie Dudenhoefer, Jeffrey A. Nielsen, Diane R. Hammerstad, Heather B. Louderback