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公开(公告)号：US20150116406A1
公开(公告)日：2015-04-30
申请号：US14588821
申请日：2015-01-02
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Kenneth Ward , Alexander Govyadinov
IPC: B41J2/045
CPC classification number: B41J2/04581 , B41J2/0451 , B41J2/0456 , B41J2/04561 , B41J2/0458 , B41J2/2142 , G01N35/1016 , G01N2035/1034
Abstract: Drop detection are disclosed. An example liquid dispensing device includes a controller to control dispensing of a first drop from a first orifice and a second drop from a second orifice, a sensor to monitor the first orifice to detect at least one of a presence or an absence of a drop from the first orifice and, in response to the sensor detecting an absence of the first drop, the controller is to classify the first orifice as at least one of occluded or non-functioning.
Abstract translation: 公开了跌落检测。 示例性液体分配装置包括控制器，用于控制从第一孔口分出第一液滴和从第二孔口分出第二液滴;传感器，用于监测第一孔口，以检测滴液的存在或不存在 所述第一孔口，并且响应于所述传感器检测到不存在所述第一液滴，所述控制器将所述第一孔口分类为闭塞或不起作用的至少一个。
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公开(公告)号：US20140078213A1
公开(公告)日：2014-03-20
申请号：US14119026
申请日：2011-05-27
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Alexander Govyadinov , Brett E. Dahlgren , Anton Nicholas Clarkson , Steven H. Walker , Daniel Burger , Trudy Benjamin
CPC classification number: B41J2/07 , B41J2/04561 , B41J2/0458 , B41J2/155 , B41J2/165 , B41J2/2142 , B41J2202/20 , G01N21/84
Abstract: In one example, a drop detector includes a light source for illuminating drops passing through a drop zone, multiple light detectors near the light source for detecting light scattered off drops passing through the drop zone, and multiple lenses each configured to focus light from the drop zone on one of the light detectors. In one example, each light detector is arranged in the same plane with all of the other light detectors. In one example, the lenses are configured to focus light from two different spaces in the drop zone on different detectors or groups of detectors. In one example, the lenses are configured to focus light from a single space in the drop zone on multiple detectors.
Abstract translation: 在一个示例中，液滴检测器包括用于照射通过液滴区的液滴的光源，靠近光源的多个光检测器，用于检测通过落下区域的液滴散射的光;以及多个透镜，每个透镜被配置为聚焦来自液滴的光 一个光检测器上的区域。 在一个示例中，每个光检测器与所有其它光检测器布置在同一平面中。 在一个示例中，透镜被配置为将来自放置区域中的两个不同空间的光聚焦在不同的检测器或检测器组上。 在一个示例中，透镜被配置为聚焦来自多个检测器上的放置区域中的单个空间的光。
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公开(公告)号：US20240390907A1
公开(公告)日：2024-11-28
申请号：US18202827
申请日：2023-05-26
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Viktor Shkolnikov , Alexander Govyadinov
IPC: B01L3/00
Abstract: Microfluidic systems are provided for the detection and analysis of cell systems that can include a set of reservoirs, the set of reservoirs including a reagent reservoir and an immiscible fluid reservoir, an incubation region having an inlet and an outlet, a set of independent fluidic networks, the set of independent fluidic networks including a first fluidic network and a second fluidic network that is not fluidically connected to the first fluidic network, wherein the first fluidic network (1) is fed by the set of reservoirs, (2) includes a droplet generator, and (3) connects to the inlet of the incubation region, and wherein the second fluidic network is connected to the outlet of the incubation region.
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公开(公告)号：US12102998B2
公开(公告)日：2024-10-01
申请号：US17297219
申请日：2019-02-01
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Alexander Govyadinov , Viktor Shkolnikov
IPC: B01L3/00 , B01F23/00 , B01F23/41 , B01F101/23 , B01L7/00 , B23Q17/24 , C08J3/075 , C08K3/16 , C08K3/22 , C08K3/32 , C12Q1/18 , G01N15/01 , G01N15/14 , G01N15/149 , G01N21/64 , G01N27/411 , G01N33/50
CPC classification number: B01L3/502715 , B01L3/50273 , B01L3/502761 , B01L7/52 , G01N15/1484 , B01L2200/0652 , B01L2200/0689 , B01L2200/12 , B01L2200/147 , B01L2300/0663 , B01L2300/1827 , B01L2400/0442 , G01N15/01 , G01N15/149 , G01N2015/1493
Abstract: In one example in accordance with the present disclosure, a cell sorting device is described. The cell sorting device includes a microfluidic channel to serially transport individual cells from a volume of cells along a flow path. A sensor disposed in the microfluidic channel distinguishes between a cell to be analyzed and waste fluid. The cell sorting device includes at least two fluid transport devices disposed within the microfluidic channel. The at least two fluid transport devices include a cell ejector to, responsive to detection of a cell to be analyzed, eject the cell to be analyzed from the cell sorting device and a waste transport device to direct the waste fluid to a waste reservoir.
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公开(公告)号：US20240288368A1
公开(公告)日：2024-08-29
申请号：US18564526
申请日：2021-05-28
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Viktor Shkolnikov , Alexander Govyadinov
CPC classification number: G01N21/6428 , G01N21/0332 , G01N21/05 , G01N33/5005 , G01N2021/0325 , G01N2021/052 , G01N2201/0636 , G01N2201/0638 , G01N2201/0806
Abstract: In one example in accordance with the present disclosure, a fluorescence detection system is described. The fluorescence detection system includes a microfluidic chamber to receive a sample containing a compound to be detected. The system also includes a light guide, a portion of which is adjacent the microfluidic chamber. The light guide refracts excitation light into the microfluidic chamber to excite fluorophores in the microfluidic chamber. The light guide has total internal reflection in those portions that are not adjacent the microfluidic chamber. The fluorescence detection system also includes a heating element to trigger a reaction in the microfluidic chamber, an illumination source to provide the excitation, and a detection system to detect fluorescence generated by the excitation of the fluorophores in the microfluidic chamber.
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Patent Agency Ranking
公开(公告)号：US11970011B2
公开(公告)日：2024-04-30
申请号：US17799420
申请日：2020-03-05
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Jacob Lum , Alexander Govyadinov
CPC classification number: B41J2/18 , B41J2/1404 , B41J2/14112 , B41J2/05 , B41J2202/12
Abstract: A fluid-ejection element of a fluid-ejection device includes a chamber layer having a pair of chambers fluidically disconnected from one another within the chamber layer. The fluid-ejection element includes a tophat layer over the chamber layer and fluidically connecting the chambers to define a fluid recirculation path between the chambers. The fluid-ejection element includes a nozzle common to both the chambers.
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公开(公告)号：US11815430B2
公开(公告)日：2023-11-14
申请号：US17059732
申请日：2019-02-22
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Alexander Govyadinov , Brett E. Dahlgren
CPC classification number: G01N21/6428 , B01L3/502715 , G01N21/645 , G01N27/00 , G01N27/27 , B01L2300/0627
Abstract: A nucleic acid detection device includes a microfluidic opening and a sensor stack. The sensor stack includes an electrochemical electrode and a photodetector. The electrochemical electrode is formed of a conductive material that is transparent to a fluorescent emission, the electrochemical electrode including a first side and an opposite second side, wherein the first side is exposed to the microfluidic opening. The photodetector is positioned relative to the second side of the electrochemical electrode to optically receive the fluorescent emission when passed through the electrochemical electrode.
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公开(公告)号：US20230279876A1
公开(公告)日：2023-09-07
申请号：US18196928
申请日：2023-05-12
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： Erik D. Torniainen , Alexander Govyadinov , Pavel Kornilovich , David P. Markel
CPC classification number: F04F7/00 , B01L3/50273 , B01L3/502738 , B81B1/006 , F04B53/10 , B01L2200/141 , B01L2200/16 , B01L2400/0605 , B81B2201/051 , B81B2203/0338
Abstract: The present disclosure is drawn to inertial pumps. An inertial pump can include a microfluidic channel, a fluid actuator located in the microfluidic channel, and a check valve located in the microfluidic channel. The check valve can include a moveable valve clement, a narrowed channel segment located upstream of the moveable valve element, and a blocking element formed in the microfluidic channel downstream of the moveable valve element. The narrowed channel segment can have a width less than a width of the moveable valve element so that the moveable valve element can block fluid flow through the check valve when the moveable valve element is positioned in the narrowed channel segment. The blocking element can be configured such that the blocking element constrains the moveable valve element within the check valve while also allowing fluid flow when the moveable valve element is positioned against the blocking element.
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公开(公告)号：US11547998B2
公开(公告)日：2023-01-10
申请号：US16768248
申请日：2018-08-30
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor： Alexander Govyadinov , Pavel Kornilovich
Abstract: An example device includes a microfluidic channel and a movable element retained in the microfluidic channel to move from a first position to a second position by fluid flow through the microfluidic channel. The device includes a sensor to take a sensor reading to determine fluid flow through the microfluidic channel. The device includes a microfluidic pump to return the movable element from the second position to the first position. The device includes a controller to actuate the microfluidic pump and to determine a flow rate of the fluid flow through the microfluidic channel based on the sensor reading.
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公开(公告)号：US11458679B2
公开(公告)日：2022-10-04
申请号：US15513965
申请日：2014-09-26
Applicant: Hewlett-Packard Development Company, L.P.
Inventor： James Elmer Abbott, Jr. , Alexander Govyadinov , Vladek Kasperchik , Krzysztof Nauka , Sivapackia Ganapathiappan , Lihua Zhao , Howard S. Tom, Jr. , Yan Zhao , Hou T. Ng
IPC: B29C64/165 , B33Y30/00 , B29C64/291 , B29C64/277 , B29C64/264 , B29C64/268 , B29C35/08 , B29C67/00 , B33Y10/00 , B29C64/205 , B29C64/209
Abstract: In one example, a lighting device for an additive manufacturing machine includes an array of light sources each to emit monochromatic light within a band of wavelengths that includes a peak light absorption of a liquid coalescing agent to be dispensed on to a build material.
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