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).
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Patent number: 11203017Abstract: 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: GrantFiled: July 26, 2016Date of Patent: December 21, 2021Assignee: 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
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Publication number: 20210339537Abstract: 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: ApplicationFiled: December 26, 2018Publication date: November 4, 2021Inventor: Jeffrey A. Nielsen
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Publication number: 20210311081Abstract: 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: ApplicationFiled: November 2, 2018Publication date: October 7, 2021Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: David H. Ochs, Kenneth Ward, Jeffrey A. Nielsen
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Patent number: 11110714Abstract: 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: GrantFiled: August 28, 2017Date of Patent: September 7, 2021Assignee: Hewlett-Packard Development Company, L.P.Inventors: Jeffrey A. Nielsen, Michael W. Cumbie, Chien-Hua Chen
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Publication number: 20210165007Abstract: 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: ApplicationFiled: June 4, 2018Publication date: June 3, 2021Applicant: Hewlett-Packard Development Company, L.P.Inventors: Jeffrey A. NIELSEN, Christie DUDENHOEFER, Debora J. THOMAS, Roberto A. PUGLIESE, Diane R. HAMMERSTAD
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Patent number: 11007529Abstract: 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: GrantFiled: July 26, 2016Date of Patent: May 18, 2021Assignee: 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
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Publication number: 20210138470Abstract: 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: ApplicationFiled: October 24, 2017Publication date: May 13, 2021Inventors: Viktor Shkolnikov, Michael W. Cumbie, Jeffrey A. Nielsen
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Publication number: 20210096147Abstract: 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: ApplicationFiled: July 18, 2017Publication date: April 1, 2021Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Christie Dudenhoefer, Jeffrey A. Nielsen, Diane R. Hammerstad, Heather B. Louderback
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Publication number: 20210088540Abstract: In example implementations, a method is provided. The method may be executed by a processor of a fluid dispensing apparatus. The method includes detecting a pause signal due to a surface load error. Corrective actions are initiated in response to the pause signal. A continue signal is received after the corrective actions are completed and a correct microplate is loaded into the fluid dispensing apparatus. Fluids are then dispensed into wells of the correct microplate.Type: ApplicationFiled: September 27, 2017Publication date: March 25, 2021Inventors: David H. OCHS, Jeffrey A. NIELSEN, Christie DUDENHOEFER
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Publication number: 20210069744Abstract: 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: ApplicationFiled: January 30, 2018Publication date: March 11, 2021Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Roberto A. Pugliese, Jeffrey A. Nielsen, Christie Dudenhoefer, Craig Olbrich, Debora J. Thomas
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Publication number: 20210069705Abstract: 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: ApplicationFiled: April 3, 2018Publication date: March 11, 2021Inventors: Jeffrey A. Nielsen, Debora J. Thomas, Kathryn Cyr
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Publication number: 20210060542Abstract: Examples disclosed herein relate to a device. Examples devices include a dispense routine engine to determine a first dispense routine for a first compound in a first chamber and a second compound in a second chamber. The dispense routine engine to determine a second dispense routine for the first compound and the second compound in response to a cancel chamber request for the second chamber and a chamber designation request for the second compound in a third chamber. Example devices include a dispense engine to control the dispense device to cancel dispensing of the second compound from the second chamber and to dispense at least a portion of the first compound from the first chamber and at least a portion of the second compound from the third chamber according to the second dispense routine.Type: ApplicationFiled: September 27, 2017Publication date: March 4, 2021Inventors: David OCHS, Jeffrey A. NIELSEN
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Publication number: 20210011043Abstract: A reagent substrate may include a reagent sample deposition area on which a sample of a reagent is deposited, and a number of diagnostic regions on which a diagnostic sample of the reagent is deposited for verification of deposition of the diagnostic sample. A reagent dispensing system may include a conveyor surface to convey a number of substrates, at least one reagent module located in-line with respect to the conveyor surface where the reagent module includes at least one reagent dispensing device to dispense a reagent on the substrates, and at least one optical sensor to verify the dispensing of the reagent at a number of diagnostic regions of the substrate.Type: ApplicationFiled: July 18, 2017Publication date: January 14, 2021Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Suzanne Mirashrafi, Christie Dudenhoefer, Heather B. Louderback, Craig Olbrich, Dennis R. Esterberg, Jeffrey A. Nielsen
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Publication number: 20210008547Abstract: Examples disclosed herein relate to a device. Examples include a region selection engine to determine a plurality of regions on a well plate, a number of wells in each region, and a location of each well in each region; and a dispense engine to determine a quantity of DNA concentrate under 1 microliter to dispense in each well of the plurality of regions on the well plate, and the dispense engine to control a fluid dispensing device to eject the quantity of DNA concentrate into each well of each region of the well plate. In examples, a quantity of DNA fragments in the DNA concentrate is unknown.Type: ApplicationFiled: September 15, 2017Publication date: January 14, 2021Applicant: Hewlett-Packard Development Company, L.P.Inventors: Hilary ELY, Adam HIGGINS, Christie DUDENHOEFER, Jeffrey A. NIELSEN
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Publication number: 20210008875Abstract: A method may include measuring at least one physical parameter of at least one component of a plurality of components of a first fluid ejection die; and calculating an operating energy value to be used to operate the first fluid ejection die based on the at least one physical parameter of the at least one component.Type: ApplicationFiled: March 8, 2018Publication date: January 14, 2021Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Roberto A. Pugliese, Jeffrey A. Nielsen, Larry H. White, Christie Dudenhoefer
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Publication number: 20210011045Abstract: Examples disclosed herein relate to a device. Examples include a region selection engine to determine a plurality of regions on a well plate, a number of wells in each region, and a location of each well in each region; and a dispense engine to determine a quantity of DNA concentrate to dispense in each well of the plurality of regions on the well plate, and the dispense engine to control a fluid dispensing device to eject the quantity of DNA concentrate into each well of each region of the well plate. In examples, a quantity of DNA fragments in the DNA concentrate is unknown.Type: ApplicationFiled: September 15, 2017Publication date: January 14, 2021Applicant: Hewlett-Packard Development Company, L.P.Inventors: Hilary Ely, Adam HIGGINS, Christie DUDENHOEFER, Jeffrey A. NIELSEN
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Patent number: 10875238Abstract: Systems, methods, and computer readable medium to provide patterned layer deposition of liquid types to a plate surface in layers organized in layouts with sites of patterns aligned to a plate origin of the plate surface. At least one layer includes a layout defining a geometric layout of the plate surface.Type: GrantFiled: October 20, 2015Date of Patent: December 29, 2020Assignee: Hewlett-Packard Development Company, L.P.Inventors: David H. Ochs, Joshua M. Yu, Jeffrey A. Nielsen, Kenneth Ward, Christie Dudenhoefer
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Publication number: 20200368737Abstract: A fluid ejection system, in an example, includes at least one nozzle of at least one die from which a fluid is ejected and at least one nanowell at which the at least one nozzle ejects an amount of fluid. A method of dispensing a fluid, in an example, includes addressing at least one nanowell with at least one nozzle of at least one die, and depositing a fluid in the nanowell with the at least one nozzle.Type: ApplicationFiled: January 30, 2018Publication date: November 26, 2020Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Jeffrey A. Nielsen, Christie Dudenhoefer, Kenneth Ward
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Publication number: 20200326317Abstract: In one example in accordance with the present disclosure, a fluidic ejection system is described. The fluidic ejection system includes a frame to retain a number of fluidic ejection devices. The frame has a form factor to match a titration plate. The fluidic ejection system also includes the number of fluidic ejection devices disposed on the frame. Each fluidic ejection device includes a reservoir disposed on a first side of the frame and a fluidic ejection die disposed on an opposite side of the frame. Each fluidic ejection die includes an array of nozzles, with each nozzle including an ejection chamber, an opening, and a fluid actuator disposed within the ejection chamber.Type: ApplicationFiled: January 30, 2018Publication date: October 15, 2020Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Christie Dudenhoefer, Jeffrey A. Nielsen, Debora J. Thomas
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Patent number: 10800176Abstract: An example printhead assembly includes a housing, nozzles and a collapsible container within the housing to supply ink to the nozzles. The collapsible container includes a top wall, a bottom wall, first and second side walls that form an interior and a spring assembly within the interior. The first flexible wall includes a first amount of excess material. The second flexible wall includes a second amount of excess material less than the first amount of excess material such that motion of the first flexible wall of the collapsible container is constrained against movement to a lesser extent as compared to the second flexible wall. The first flexible wall faces the sensor. A sensor assembly is coupled to the housing and includes a sensor to provide a sensor signal indicating the amount of ink within the collapsible container.Type: GrantFiled: October 23, 2019Date of Patent: October 13, 2020Assignee: Hewlett-Packard Development Company, L.P.Inventors: Dennis R Esterberg, Matthew J Janssen, Jeffrey A Nielsen, Norman L Berger