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公开(公告)号：US10913039B2
公开(公告)日：2021-02-09
申请号：US16300975
申请日：2016-07-06
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Alexander Govyadinov , Pavel Kornilovich , Erik D. Torniainen , David P. Markel
Abstract: One example provides a microfluidic mixing device that includes a main fluidic channel to provide main fluidic channel flow and a number of I-shaped secondary channels extending outwardly from a portion of the main fluidic channel. A number of inertial pumps are located within the I-shaped secondary channels to create serpentine flows in the direction of the main fluidic channel flow or create vorticity-inducing counterflow in the main fluidic channel.
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公开(公告)号：US20210001337A1
公开(公告)日：2021-01-07
申请号：US16605706
申请日：2018-03-27
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Viktor Shkolnikov , Alexander Govyadinov , Pavel Kornilovich , Erik D. Torniainen
IPC: B01L3/00
Abstract: An example system includes an input channel having a first end and a second end to receive particles through the first end, a separation chamber, at least two output channels, and an integrated pump to facilitate flow through the separation chamber. The separation chamber is in fluid communication with the second end of the input channel. The separation chamber has a passive separation structure, the passive separation structure including an array of columns spaced apart to facilitate separation of particles in a flow based on a size of the particles. Each output channel is in fluid communication with the separation chamber to receive separated particles. The integrated pump is positioned within at least one of the input channel or one of the at least two output channels.
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公开(公告)号：US10859074B2
公开(公告)日：2020-12-08
申请号：US16094433
申请日：2016-07-22
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Alexander Govyadinov
Abstract: According to an example, a microfluidic device may include a transport channel having an inlet and an outlet and a plurality of pump loops extending along the transport channel. Each of the plurality of pump loops may include a first branch, a second branch, and a connecting section connecting the first branch and the second branch. The first branch may include a first opening and the second branch may include a second opening, in which the first opening and the second opening are in direct fluid communication with the transport channel. The pump loops may also each include an actuator positioned in the first branch, in which the actuators in the pump loops are to be activated to induce a traveling wave that is to transport the fluid through the transport channel from the inlet to the outlet.
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公开(公告)号：US10857536B2
公开(公告)日：2020-12-08
申请号：US15748456
申请日：2016-01-08
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Erik D Torniainen , Alexander Govyadinov , Pavel Kornilovich , David P Markel
Abstract: Examples include polymerase chain reaction (PCR) devices. Example PCR devices comprise a fluid input, a fluid output, and a set of microfluidic channels that fluidly connect the fluid input and the fluid output. 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, and the at least one heating element is to pump fluid to the reaction chamber and from the reaction chamber of each microfluidic channel.
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公开(公告)号：US10807376B2
公开(公告)日：2020-10-20
申请号：US16217008
申请日：2018-12-11
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Alexander Govyadinov , Erik D. Torniainen , David P. Markel
Abstract: A fluid ejection device may include a first channel having a first end and a second end, a first drop ejector along the first channel, a second channel having a first end and a second end, a second drop ejector along the second channel, a third channel extending between and connecting the first end of the first channel and the first end of the second channel, a fourth channel extending between and connecting the second end of the first channel and the second end of the second channel and a fifth channel extending between and connecting the third channel and the fourth channel.
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Patent Agency Ranking
公开(公告)号：US10717274B2
公开(公告)日：2020-07-21
申请号：US16685818
申请日：2019-11-15
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Alexander Govyadinov , Paul A. Richards
Abstract: A fluid ejection device includes a fluid slot, a fluid ejection chamber communicated with the fluid slot, a drop ejecting element within the fluid ejection chamber, a fluid circulation channel communicated at one end with the fluid slot and communicated at another end with the fluid ejection chamber, a fluid circulating element within the fluid circulation channel, and a channel wall separating the fluid ejection chamber and the fluid circulation channel. The fluid circulation channel includes a channel loop, and a width of the channel wall is based on a width of the channel loop and a width of the fluid ejection chamber.
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公开(公告)号：US20200164371A1
公开(公告)日：2020-05-28
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：US10589269B2
公开(公告)日：2020-03-17
申请号：US15547751
申请日：2015-01-30
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Alexander Govyadinov , Erik D Torniainen , Pavel Kornilovich
Abstract: A device for microfluidic transport includes a first fluid reservoir, a second fluid reservoir spaced from the first fluid reservoir, a main fluid channel communicated with the first fluid reservoir and the second fluid reservoir, an auxiliary fluid channel communicated with the main fluid channel, and a fluid actuator within the auxiliary fluid channel asymmetric to the main fluid channel such that operation of the fluidic actuator is to induce fluid flow in the main fluid channel from the first reservoir toward the second reservoir.
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公开(公告)号：US10459241B2
公开(公告)日：2019-10-29
申请号：US15307759
申请日：2014-04-30
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Charles M Santori , Alexander Govyadinov
IPC: G02B27/42 , G02B21/00 , G02B21/06 , F21V8/00 , G03H1/04 , G01N21/05 , G02B21/36 , H04N5/225 , G03H1/08 , G03H1/02 , G03H1/22 , G03H1/26 , G03H1/00
Abstract: Imaging apparatus and methods using diffraction-based illumination are disclosed. An example apparatus includes a diffraction grating to redirect light from a light source toward a sample to thereby illuminate the sample. The example apparatus also includes an image sensor to detect a diffraction pattern created by the illuminated sample.
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公开(公告)号：US10449776B2
公开(公告)日：2019-10-22
申请号：US16125701
申请日：2018-09-08
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Alexander Govyadinov , Adam L. Ghozeil , Boon Bing Ng , Patrick Leonard , Raymond Connolly
Abstract: A print head has a fluid slot and a sensing chamber having a first port connected to the fluid slot and a second port. The sensing chamber contains an ink level sensor. A circulation passage extends from the fluid slot and is fluidly coupled to the second port. A fluid pump circulates fluid through the circulation passage.
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