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

IPC: B01L3/00 ,  C12M3/06 ,  C12M1/34 ,  B01L7/00 ,  C12Q1/686

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.

公开(公告)号：US10780705B2

公开(公告)日：2020-09-22

申请号：US16095478

申请日：2016-07-29

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Nicholas McGuinness ,  Alexander Govyadinov ,  Tsuyoshi Yamashita ,  Erik D Torniainen ,  David P Markel

IPC: B41J2/18 ,  B41J2/14 ,  B41J2/175

Abstract: A fluid ejection device includes a fluid slot, two laterally adjacent fluid ejection chambers each having a drop ejecting element therein, a fluid circulation path communicated with the fluid slot and each of the two laterally adjacent fluid ejection chambers, and a fluid circulating element within the fluid circulation path, with the fluid circulating element laterally adjacent at least one of the two laterally adjacent fluid ejection chambers, and the two laterally adjacent fluid ejection chambers to substantially simultaneously eject drops of fluid therefrom such that the drops of fluid are to coalesce during flight.

公开(公告)号：US20180214866A1

公开(公告)日：2018-08-02

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

IPC: B01L3/00 ,  C12M3/06 ,  C12M1/34

CPC classification number: B01L3/50273 ,  B01L3/502784 ,  B01L7/52 ,  B01L2300/0861 ,  B01L2300/0864 ,  B01L2300/087 ,  B01L2300/0896 ,  B01L2300/1827 ,  B01L2400/0442 ,  B01L2400/0481 ,  C12M23/16 ,  C12M41/12 ,  C12Q1/686

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.

公开(公告)号：US20170276259A1

公开(公告)日：2017-09-28

申请号：US15503664

申请日：2014-08-15

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Alexander Govyadinov ,  Erik D Torniainen ,  David P Markel ,  Pavel Kornilovich

IPC: F16K99/00 ,  F04F7/00 ,  F04B53/10 ,  B01L3/00

CPC classification number: F16K99/0021 ,  B01L3/50273 ,  B01L3/502738 ,  B01L2300/023 ,  B01L2300/0864 ,  B01L2400/0442 ,  B01L2400/0622 ,  F04B53/10 ,  F04F7/00 ,  F16K99/0042 ,  F16K99/0055 ,  F16K2099/0084

Abstract: In an example implementation, a method of controlling a microfluidic valve includes activating a first inertial pump at a first frequency, and a second inertial pump at a second frequency to create a first fluid flow pattern within a microfluidic valve. The method also includes adjusting at least one of the first frequency and the second frequency to change the first fluid flow pattern to a second fluid flow pattern.

公开(公告)号：US10197188B2

公开(公告)日：2019-02-05

申请号：US15503664

申请日：2014-08-15

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Alexander Govyadinov ,  Erik D Torniainen ,  David P Markel ,  Pavel Kornilovich

IPC: B01L3/00 ,  F04B53/10 ,  F04F7/00 ,  F16K99/00 ,  F17D1/00

Abstract: In an example implementation, a method of controlling a microfluidic valve includes activating a first inertial pump at a first frequency, and a second inertial pump at a second frequency to create a first fluid flow pattern within a microfluidic valve. The method also includes adjusting at least one of the first frequency and the second frequency to change the first fluid flow pattern to a second fluid flow pattern.

公开(公告)号：US20180023995A1

公开(公告)日：2018-01-25

申请号：US15546780

申请日：2015-04-30

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Alexander Govyadinov ,  Erik D Torniainen ,  Pavel Kornilovich ,  David P Markel

IPC: G01F25/00 ,  B41J2/05 ,  B05B12/00 ,  G01F1/696 ,  B05B17/04

CPC classification number: G01F25/0007 ,  B05B12/00 ,  B05B12/004 ,  B05B17/04 ,  B41J2/0456 ,  B41J2/04563 ,  B41J2/0458 ,  B41J2/04581 ,  B41J2/05 ,  B41J2/08 ,  B41J2/11 ,  B41J2/125 ,  B41J2/14153 ,  B41J2/14201 ,  G01F1/68 ,  G01F1/696 ,  G01F25/00 ,  G01F25/0023

Abstract: A droplet of fluid having a predetermined drop weight is ejected from a microfluidic channel. Electrical signals are received from a sensor in the microfluidic channel, wherein the electrical signals vary in response to the ejection of the droplet of fluid. The electrical signals of the sensor are calibrated to a rate of flow of fluid through the microfluidic channel based on a number of droplets ejected and the predetermined drop weight of each droplet.

公开(公告)号：US11059290B2

公开(公告)日：2021-07-13

申请号：US16095575

申请日：2016-07-29

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Alexander Govyadinov ,  Tsuyoshi Yamashita ,  Nicholas McGuinness ,  David P Markel ,  Erik D Tornianen

IPC: B41J2/14 ,  B41J2/21

Abstract: A fluid ejection device includes a fluid slot, three laterally adjacent fluid ejection chambers each having a drop ejecting element therein, a fluid circulation path communicated with each of the three laterally adjacent fluid ejection chambers, and a fluid circulating element within the fluid circulation path, with at least two laterally adjacent fluid ejection chambers of the three laterally adjacent fluid ejection chambers to substantially simultaneously eject drops of fluid therefrom such that the drops of fluid are to coalesce during flight.

公开(公告)号：US20190134987A1

公开(公告)日：2019-05-09

申请号：US16095478

申请日：2016-07-29

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Nicholas McGuinness ,  Alexander Govyadinov ,  Tsuyoshi Yamashita ,  Erik D Torniainen ,  David P Markel

IPC: B41J2/18

Abstract: A fluid ejection device includes a fluid slot, two laterally adjacent fluid ejection chambers each having a drop ejecting element therein, a fluid circulation path communicated with the fluid slot and each of the two laterally adjacent fluid ejection chambers, and a fluid circulating element within the fluid circulation path, with the fluid circulating element laterally adjacent at least one of the two laterally adjacent fluid ejection chambers, and the two laterally adjacent fluid ejection chambers to substantially simultaneously eject drops of fluid therefrom such that the drops of fluid are to coalesce during flight.

公开(公告)号：US11260668B2

公开(公告)日：2022-03-01

申请号：US17065831

申请日：2020-10-08

Applicant: Hewlett-Packard Development Company, L.P.

Inventor： Alexander Govyadinov ,  Erik D Torniainen ,  David P Markel

IPC: B41J2/18 ,  B41J2/14 ,  B41J2/175 ,  F04B19/00 ,  F04B19/20 ,  F04B19/24 ,  B01L3/00

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 firs channel and the second end of the second channel and a fifth channel extending between and connecting the third channel and the fourth channel.

公开(公告)号：US20200031135A1

公开(公告)日：2020-01-30

申请号：US16337579

申请日：2017-01-23

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Tsuyoshi Yamashita ,  Alexander Govyadinov ,  Nick McGuinness ,  Erik D Torniainen ,  David P Markel

IPC: B41J2/18

Abstract: A fluid ejection device includes a fluid slot, two laterally adjacent fluid ejection chambers each communicated with the fluid slot and having a drop ejecting element therein, and a fluid circulation path communicated with each of the two laterally adjacent fluid ejection chambers and having a fluid circulating element therein, with the two laterally adjacent fluid ejection chambers to concurrently eject drops of fluid therefrom such that the drops of fluid are to coalesce during flight.