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公开(公告)号：US11325380B2
公开(公告)日：2022-05-10
申请号：US16605255
申请日：2018-07-17
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Pavel Kornilovich , Alexander Govyadinov , John Lahmann , Paul J. Benning
Abstract: An example device includes a first droplet ejector including a first nozzle to eject droplets of a first fluid, and a first target medium positioned relative to the first droplet ejector to receive the droplets of the first fluid from the first droplet ejector. The example device further includes a second droplet ejector in fluid communication with the first target medium to receive a second fluid from the first target medium. The second droplet ejector includes a second nozzle to eject droplets of the second fluid.
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公开(公告)号：US11280755B2
公开(公告)日：2022-03-22
申请号：US16608322
申请日：2018-04-26
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Sarah Gish , Tod Woodford , Alexander Govyadinov
IPC: G01N27/327 , C25D5/02 , G01N27/30 , C23C18/42 , G01N27/333
Abstract: An example device includes a processor to connect to an electrode disposed within a microfluidic volume and to connect a second electrode that includes a surface of silver metal disposed within the microfluidic volume. The processor is to apply an electrical potential between the electrode and the second electrode when the microfluidic volume contains a fluid that contains chloride ions to form a layer of silver chloride on the surface of the second electrode. The processor is further to cease application of the electrical potential and operate the second electrode as a reference electrode in a measurement process performed within the microfluidic volume.
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公开(公告)号：US11278889B2
公开(公告)日：2022-03-22
申请号：US16616944
申请日：2017-07-18
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Jeremy Harlan Donaldson , Stephen Lee Frey , Alexander Govyadinov
IPC: B01L3/00
Abstract: A sample test device is provided that includes a body having an insertion surface spaced apart from a distal end portion and a fluid manipulating assembly disposed in the distal end portion. A mixing receptacle is defined in the fluid manipulating assembly and provides a volume to mix a test mixture. A plunger is disposed in the body and creates a positive air pressure in the mixing receptacle when inserted into the body. A test die is disposed in the fluid manipulation assembly and a fluid path extends from the mixing receptacle to the test die. Activation of the plunger creates a positive pressure in the mixing receptacle to force the test mixture to flow from the mixing receptacle to the test die.
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公开(公告)号：US20220080422A1
公开(公告)日：2022-03-17
申请号：US17417615
申请日：2019-02-12
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Viktor Shkolnikov , Alexander Govyadinov
IPC: B01L3/00
Abstract: The present disclosure relates to a microfluidic particle concentrator that includes an inlet microchannel, a filtering chamber fluidly connected to the inlet microchannel to receive a sample fluid, and a mechanical filter positioned in the filtering chamber. The particle concentrator also includes a filter outlet microchannel fluidly connected to the filtering chamber to receive a particle-ablated fluid formed by passing through the mechanical filter, a particle outlet microchannel fluidly connected to the filtering chamber to receive a particle-concentrated fluid including a plurality of particles not permitted to pass through the mechanical filter, and a fluid movement network including multiple pumps. The multiple fluid pumps generate sample fluid flow through the inlet microchannel and into the filtering chamber, particle-ablated fluid flow from the mechanical filter into the filter outlet microchannel, and particle-concentrated fluid from the filtering chamber into the particle outlet microchannel.
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公开(公告)号：US20220080421A1
公开(公告)日：2022-03-17
申请号：US17414155
申请日：2019-05-13
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Viktor Shkolnikov , Alexander Govyadinov , Diane R. Hammerstad
Abstract: A system includes a microchannel analysis region, a first fluid actuation device, a second fluid actuation device, a sensor, and a controller. The first fluid actuation device is at a first end of the microchannel analysis region. The second fluid actuation device is at a second end of the microchannel analysis region opposite to the first end. The sensor is within the microchannel analysis region between the first fluid actuation device and the second fluid actuation device. The sensor measures an impedance of a fluid within the microchannel analysis region. The controller activates the first fluid actuation device to generate a first pressure wave in the fluid and activates the second fluid actuation device to generate a second pressure wave in the fluid. The first pressure wave and the second pressure wave converge at the sensor.
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Patent Agency Ranking
公开(公告)号：US20220065815A1
公开(公告)日：2022-03-03
申请号：US17415388
申请日：2019-05-07
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Tod Woodford , Alexander Govyadinov , Brian J. Keefe , Diane R. Hammerstad
IPC: G01N27/49 , G01N27/327 , B01L3/00
Abstract: In one example in accordance with the present disclosure, a fluid analysis device is described. The fluid analysis device includes a chamber to receive a number of fluids. At least one fluid includes an electrochemical label with a unique electrochemical response to an applied electrical potential. A multi-electrode sensor of the fluid analysis device is disposed within the chamber and detects electrical signals within the chamber. The fluid analysis device also includes a controller coupled to the multi-electrode sensor. The controller applies an electrical potential across multiple electrodes of the multi-electrode sensor and identifies, from the electrical signal detected by the multi-electrode sensor, fluids currently in the chamber based on the unique electrochemical responses of associated electrochemical labels.
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公开(公告)号：US11230097B2
公开(公告)日：2022-01-25
申请号：US16834546
申请日：2020-03-30
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Alexander Govyadinov , Paul A. Richards , Chris Bakker
Abstract: A fluid ejection device includes a fluid slot, at least one fluid ejection chamber communicated with the fluid slot, a drop ejecting element within the at least one fluid ejection chamber, a fluid circulation channel communicated with the fluid slot and the at least one fluid ejection chamber, and a fluid circulating element communicated with the fluid circulation channel. The fluid circulating element is to provide on-demand circulation of fluid from the fluid slot through the fluid circulation channel and the at least one fluid ejection chamber.
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公开(公告)号：US20210331468A1
公开(公告)日：2021-10-28
申请号：US16605255
申请日：2018-07-17
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Pavel Kornilovich , Alexander Govyadinov , John Lahmann , Paul J. Benning
Abstract: An example device includes a first droplet ejector including a first nozzle to eject droplets of a first fluid, and a first target medium positioned relative to the first droplet ejector to receive the droplets of the first fluid from the first droplet ejector. The example device further includes a second droplet ejector in fluid communication with the first target medium to receive a second fluid from the first target medium. The second droplet ejector includes a second nozzle to eject droplets of the second fluid.
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公开(公告)号：US20210190616A1
公开(公告)日：2021-06-24
申请号：US16074349
申请日：2016-04-20
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Ning Ge , Alexander Govyadinov , Anita Rogacs , Viktor Shkolnikov
Abstract: A microfluidic pressure sensor may include a reference chamber, a sensed volume, a microfluidic channel connecting an interior of the reference chamber to an interior of the sensed volume, a volume of liquid contained and movable within the microfluidic channel while occluding the microfluidic channel and a sensor to output signals indicating positioning of the volume of liquid along the microfluidic channel. Positioning of the volume of liquid along microfluidic channel indicates a pressure of the sensed volume.
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公开(公告)号：US20210031192A1
公开(公告)日：2021-02-04
申请号：US16768857
申请日：2018-03-12
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Pavel Kornilovich , Ross Warner , Alexander Govyadinov
IPC: B01L3/00
Abstract: A microfluidic device may include a die package. The die package may include at least on fluidic die and an overmold material overmolding the fluidic die. The microfluidic device may also include a mesofluidic plate coupled to the die package. The mesofluidic plate includes at least one mesofluidic channel formed therein to fluidically couple the fluidic die.
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