Patents by Inventor Diane R. Hammerstad

Diane R. Hammerstad 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).

  • Publication number: 20210238537
    Abstract: In one example in accordance with the present disclosure, a conductivity-based lysis monitor is described. The lysis monitoring device includes a lysing chamber to receive a cell to be lysed and at least one lysing device to rupture a cell membrane. At least one pair of electrodes are disposed in the lysing chamber to detect a level of conductivity in the lysing chamber. A controller of the device determines when the cell membrane has ruptured based on detected levels of conductivity in the lysing chamber.
    Type: Application
    Filed: August 10, 2018
    Publication date: August 5, 2021
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Alexander Govyadinov, Diane R. Hammerstad, Viktor Shkolnikov
  • 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
  • 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
  • Publication number: 20210069708
    Abstract: A microfluidic flow sensor may include a substrate having a microfluidic channel, a bubble generator to introduce a bubble into fluid that is directed through the microfluidic channel and a sensor element along the microfluidic channel and spaced from the bubble generator. The sensor element outputs a signal based upon a sensed passage of the bubble with respect to the sensor element. Portions of the microfluidic channel proximate the sensor element have a first size and wherein the bubble generated by the bubble generator is to have a second size greater than one half the first size.
    Type: Application
    Filed: February 12, 2018
    Publication date: March 11, 2021
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Alexander N. GOVYADINOV, Pavel KORNILOVICH, Diane R. HAMMERSTAD
  • Publication number: 20210072274
    Abstract: A microfluidic flow sensor may include a substrate having a microfluidic channel, an inert particle source to supply a fluid carrying an inert particle to the microfluidic channel and a sensor element along the microfluidic channel and spaced from the inert particle source. The sensor element outputs a signal based upon a sensed passage of the inert particle with respect to the sensor element. Portions of the microfluidic channel proximate the sensor element have a first size and wherein the inert particle provided by the inert particle source is to have a second size greater than one half the first size.
    Type: Application
    Filed: February 12, 2018
    Publication date: March 11, 2021
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Alexander N. GOVYADINOV, Pavel KORNILOVICH, Diane R. HAMMERSTAD
  • Publication number: 20210053278
    Abstract: In one example, a processor readable medium having instructions thereon that when executed cause an additive manufacturing machine to vary operating characteristics of a fusing laser beam at multiple different voxel locations in a layer of build material according to an energy dosage to be applied at each voxel location in an object slice, including multiple different energy dosages for corresponding multiple different voxel locations in the slice.
    Type: Application
    Filed: March 29, 2017
    Publication date: February 25, 2021
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Cary G. ADDINGTON, David A. CHAMPION, Mohammed S. SHAARAWI, James McKINNELL, Diane R. HAMMERSTAD
  • Publication number: 20200224145
    Abstract: An electroporation system may include a well plate, a dispenser and a dispenser-well positioning system. The well plate may include wells, each of the wells including an interior, a first electrode adjacent the interior and a second electrode adjacent the interior and spaced from the first electrode. The first electrode and the second electrode are to apply an electrostatic field across the well. The dispenser is to dispense a cell having a diameter into each of the wells. The dispenser-well positioning system is to align each well and the dispenser such that the dispenser dispenses the cell into each well at a location spaced from the first electrode and the second electrode by a distance of at least 5 times the diameter of the cell.
    Type: Application
    Filed: September 23, 2017
    Publication date: July 16, 2020
    Inventors: Viktor Shkolnikov, Diane R. Hammerstad, Michael W. Cumbie
  • Publication number: 20200191815
    Abstract: A reagent dispensing system, in an example, may include a processing device, a data storage device coupled to the processing device, a plurality of swappable reagent modules, each swappable reagent module comprising a plurality of reagent dispensing cartridges, and a module frame coupling the reagent cartridges to one another.
    Type: Application
    Filed: July 18, 2017
    Publication date: June 18, 2020
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Dennis R. Esterberg, Craig Olbrich, Christie Dudenhoefer, Diane R. Hammerstad, Heather B. Louderback, Suzanne Mirashrafi
  • Publication number: 20200041532
    Abstract: A reagent deposition area of a reagent dispensing system may include a dispersion bar located above a conveyor system, and a reagent module coupled to the dispersion bar. The reagent module may include at least one reagent dispensing device to dispense a number of reagents on a substrate carried on the conveyor system, and a module frame electrically and mechanically coupling the reagent dispensing device to the reagent dispensing system. The dispersion bar moves the reagent module in two coordinate directions planar with the surface of the substrate.
    Type: Application
    Filed: July 18, 2017
    Publication date: February 6, 2020
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Heather B. Louderback, Diane R. Hammerstad, Jeffrey A. Nielsen
  • Publication number: 20190299176
    Abstract: Examples include microfluidic devices. Example microfluidic devices comprise a first microfluidic channel, a second microfluidic channel, and microfluidic output channel fluidly coupled to the first microfluidic channel and the second microfluidic channel via a fluid junction. The example device comprises a first fluid actuator disposed in the first microfluidic channel to actuate to thereby pump a first fluid into the microfluidic output channel, and the example device comprises a second fluid actuator disposed in the second microfluidic channel to actuate to pump a second fluid into the microfluidic output channel. The first fluid actuator and the second fluid actuator are to actuate to thereby pump a fluid mixture of the first fluid and the second fluid into the microfluidic output channel.
    Type: Application
    Filed: June 30, 2017
    Publication date: October 3, 2019
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: David MARKEL, Pavel KORNILOVICH, Erik D TORNIAINEN, Alexander GOVYADINOV, Viktor SHKOLNIKOV, Diane R HAMMERSTAD, Ning GE
  • Patent number: 10384450
    Abstract: In one example, an inkjet printhead includes a printhead die embedded in a molding having a channel therein through which fluid may flow directly to the die. The die contains multiple fluid ejectors and multiple fluid chambers each near an ejector. Each chamber has an inlet through which fluid from the channel may enter the chamber and an outlet through which fluid may be ejected from the chamber. A perimeter of the channel surrounds the inlets but is otherwise unconstrained in size by the size of the die.
    Type: Grant
    Filed: January 28, 2019
    Date of Patent: August 20, 2019
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Chien-Hua Chen, Michael W. Cumbie, Diane R. Hammerstad
  • Patent number: 10365226
    Abstract: Provided in one example is an apparatus, including a substrate supporting a microfluidic channel, a bubble jet inertial pump supported by the substrate adjacent the microfluidic channel to pump fluid through the microfluidic channel and an optical sensor on a first side of the microfluidic channel. A light emitter on a second side of the microfluidic channel is to pass light across the microfluidic channel to the optical sensor.
    Type: Grant
    Filed: April 30, 2015
    Date of Patent: July 30, 2019
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Alexander Govyadinov, Charles M. Santori, Anita Rogacs, Diane R. Hammerstad, Manish Giri
  • Patent number: 10348923
    Abstract: A printer is operable to implement one of a subscription configuration or trade use configuration. The printer can implement one of the subscription configuration or trade use configuration. When the subscription configuration is implemented, the printer restrictively controls, at least temporarily, use of the printing material resource that is installed on the printer. When the trade use configuration is implemented, the printer provides for less or no control over the use of the printing material resource.
    Type: Grant
    Filed: August 18, 2015
    Date of Patent: July 9, 2019
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Sovrin T Tolia, Rowdy K Webb, Philip A Mccoog, Diane R Hammerstad
  • Patent number: 10328694
    Abstract: A printed circuit board includes a recessed pocket. A fluid droplet ejection die is within recessed pocket.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: June 25, 2019
    Assignee: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Chien Hua Chen, Diane R Hammerstad, Randy Hoffman
  • Publication number: 20190151849
    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: Application
    Filed: July 26, 2016
    Publication date: May 23, 2019
    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: 20190152225
    Abstract: In one example, an inkjet printhead includes a printhead die embedded in a molding having a channel therein through which fluid may flow directly to the die. The die contains multiple fluid ejectors and multiple fluid chambers each near an ejector. Each chamber has an inlet through which fluid from the channel may enter the chamber and an outlet through which fluid may be ejected from the chamber. A perimeter of the channel surrounds the inlets but is otherwise unconstrained in size by the size of the die.
    Type: Application
    Filed: January 28, 2019
    Publication date: May 23, 2019
    Inventors: Chien-Hua Chen, Michael W. Cumbie, Diane R. Hammerstad
  • Publication number: 20190143316
    Abstract: An apparatus includes a media that includes an encoded pattern to indicate a location of each of a plurality of dispensing locations on a receiving area for a pipette dispenser. The encoded pattern is employed to guide the pipette dispenser to dispense a volume to a selected dispensing location from the plurality of dispensing locations based on a predetermined dispensing location on the receiving area.
    Type: Application
    Filed: July 13, 2016
    Publication date: May 16, 2019
    Inventors: Diane R. HAMMERSTAD, Matthew David SMITH, Hilary ELY
  • Patent number: 10232618
    Abstract: In one example, a fluid flow structure includes a fluid dispensing micro device embedded in a molding having a channel therein through which fluid may flow directly to the device. The device contains multiple fluid ejectors and multiple fluid chambers each near an ejector. Each chamber has an inlet through which fluid from the channel may enter the chamber and an outlet through which fluid may be ejected from the chamber. A perimeter of the channel surrounds the inlets but is otherwise unconstrained in size by the size of the device.
    Type: Grant
    Filed: January 9, 2018
    Date of Patent: March 19, 2019
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Chien-Hua Chen, Michael W. Cumbie, Diane R. Hammerstad
  • Publication number: 20190003097
    Abstract: Example implementations relate to a mixing chamber for laundry supplies. For example, an appliance may include a mixing chamber to receive at least one laundry supply and a processor coupled to the mixing chamber. The processor is to identify a user-specified setting associated with a laundry load, determine a characteristic of the laundry load, calculate an amount of the at least one laundry supply to apply to the laundry load based on the user-specified setting and the characteristic, and provide the amount of the at least one laundry supply to the mixing chamber, where the mixing chamber is to mix the amount of the at least one laundry supply.
    Type: Application
    Filed: April 8, 2016
    Publication date: January 3, 2019
    Applicant: Hewlett Packard Development Company
    Inventors: Michael W Cumbie, David Olsen, Diane R Hammerstad, Eric M Laplante
  • Publication number: 20180371666
    Abstract: Example implementations relate to the automatic ordering of laundry supplies. For example, an appliance may include a fluid detection sensor to detect an amount of laundry supplies present within the appliance, where the fluid detection sensor is to detect a first level of fluid in a first container in the appliance. The appliance may also include a processor coupled to the fluid detection sensor, where the processor is to compare the first level of the fluid to a predetermined threshold level and automatically send a request to order a new container when the first level of the fluid in the first container reaches the predetermined threshold level and where the request is sent over a network.
    Type: Application
    Filed: April 8, 2016
    Publication date: December 27, 2018
    Inventors: Eric M Laplante, Diane R Hammerstad, Michael W Cumbie, David Olsen