Patents by Inventor Richard W Seaver

Richard W Seaver 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: 20240181449
    Abstract: A microfluidic device includes a first channel, second channels, and a transition channel splitting the first channel into the second channels. The transition has a first end fluidically connected to the first channel and a second end fluidically connected to the second channels. The transition channel expands in width from a width of the first channel at the first end to no less than a sum of widths of the second channels at the second end so as to promote fluid flow from the first channel to the second channels.
    Type: Application
    Filed: April 6, 2021
    Publication date: June 6, 2024
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Carson DENISON, Pavel KORNILOVICH, Richard W. SEAVER, Anand Samuel JEBAKUMAR, Erik D. TORNIANEN, Alexander GOVYADINOV
  • Publication number: 20240165617
    Abstract: A microfluidic device includes a first channel having a first width and a second channel having a second width greater than the first width. The microfluidic device includes a transition channel having a first end fluidically connected to the first channel and a second end fluidically connected to the second channel. The transition channel expands in width from the first width to the second width so as to promote fluid flow from the first channel to the second channel.
    Type: Application
    Filed: April 6, 2021
    Publication date: May 23, 2024
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Erik D. TORNIANEN, Carson DENISON, Richard W. SEAVER, Anand Samuel JEBAKUMAR, Pavel KORNILOVICH, Alexander GOVYADINOV
  • Publication number: 20240082839
    Abstract: A microfluidic device includes a chamber having sidewalls, a floor, a ceiling, and an inlet. The microfluidic device includes pillars extending from the floor to the ceiling of the chamber. Each pillar has an orientation relative to the inlet defined by a leading surface and a trailing corner opposite the leading corner. The trailing corner has an angle less than a threshold angle that is based on a fluidic contact angle. The orientations of the pillars relative to the inlet promote fluid flow from the inlet throughout the chamber without trapping gas at the sidewalls of the chamber.
    Type: Application
    Filed: January 22, 2021
    Publication date: March 14, 2024
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Carson DENISON, Erik D. TORNIAINEN, Richard W. SEAVER, Pavel KORNILOVICH, Alexander GOVYADINOV, Anand Samuel JEBAKUMAR
  • Patent number: 11911731
    Abstract: An immiscible droplet generation system may include a chip, a microfluidic channel integrated into the chip, an input to the microfluidic channel through which the microfluidic channel is to be filled with a first fluid that is to be moved through the microfluidic channel and a droplet generator. The droplet generator is integrated into the chip to generate a droplet of a second fluid, immiscible within the first fluid, and to inject the droplet into the first fluid in the microfluidic channel.
    Type: Grant
    Filed: October 21, 2016
    Date of Patent: February 27, 2024
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Erik D. Torniainen, Alexander N. Govyadinov, Pavel Kornilovich, David P. Markel, Richard W. Seaver
  • Publication number: 20230381783
    Abstract: In one example in accordance with the present disclosure, a device for conducting a reaction with a fluid sample is described. The device includes: a microfluidic channel; a number of heating elements along the microfluidic channel; and an inertial pump at each of opposite ends of the microfluidic channel to oscillate the fluid sample along the microfluidic channel.
    Type: Application
    Filed: October 19, 2020
    Publication date: November 30, 2023
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Carson Denison, Erik D. Torniainen, Richard W. Seaver
  • Publication number: 20230381723
    Abstract: An example microfluidic mixer can include an inlet microfluidic channel portion and a fluid splitting channel portion including an overpass microfluidic channel to receive fluid from a first side of the inlet microfluidic channel portion and an underpass microfluidic channel to receive fluid from a second side of the inlet microfluidic channel portion, where the underpass microfluidic channel extends under the overpass microfluidic channel such that the channels overlap at their respective downstream ends. A fluid recombining channel portion is downstream of the fluid splitting portion and includes an angled recombining surface having an acute angle with respect to a direction of fluid flow, where the angled recombining surface is between the downstream ends of the overpass and underpass microfluidic channels. An outlet microfluidic channel portion is fluidly connected downstream from the fluid recombining channel portion.
    Type: Application
    Filed: May 27, 2022
    Publication date: November 30, 2023
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Carson Denison, Richard W. SEAVER, Erik D. TORNIAINEN, Pavel KORNILOVICH, Alexander GOVYADINOV, Anand Samuel JEBAKUMAR, Oumnia EL FAJRI
  • Publication number: 20230356229
    Abstract: In one example in accordance with the present disclosure, a thermal cycling device is described. The thermal cycling device includes a fluid chamber to retain a fluid. A heating element is disposed around multiple sides of a cross-sectional perimeter of the fluid chamber and an insulator is disposed around multiple sides of a cross-sectional perimeter of the heating element. The thermal cycling device also includes a conductive body disposed around multiple sides of a cross-sectional perimeter of the insulator.
    Type: Application
    Filed: March 30, 2020
    Publication date: November 9, 2023
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Carson Denison, Erik D. Torniainen, Richard W. Seaver
  • Publication number: 20230330673
    Abstract: An example microfluidic structure can include a first microfluidic channel segment in a first elevation plane, a second microfluidic channel segment in a second elevation plane, and a transverse microfluidic channel segment connecting the first microfluidic channel segment to the second microfluidic channel segment. An angled exterior wall segment can be at the transverse microfluidic channel segment. The angled exterior wall segment can be angled in the first or second elevation plane at an acute angle with respect to a direction of fluid flow through the first or second microfluidic channel segment. A fluid cross-sectional area can increase in the fluid flow direction along the angled exterior wall segment.
    Type: Application
    Filed: April 15, 2022
    Publication date: October 19, 2023
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Oumnia El Fajri, Richard W. SEAVER, Erik D. TORNIAINEN, Anand Samuel JEBAKUMAR, Pavel KORNILOVICH, Alexander GOVYADINOV, Carson DENISON
  • Publication number: 20230330675
    Abstract: An example microfluidic structure can include a first microfluidic channel segment in a first elevation plane, a second microfluidic channel segment in a second elevation plane, and a transverse microfluidic channel segment connecting the first microfluidic channel segment to the second microfluidic channel segment. An interior pillar can be positioned at the transverse microfluidic channel segment. The interior pillar can have a tapered downstream edge. The tapered downstream edge can be angled in the first or second elevation plane at an acute angle. A fluid cross-sectional area can increase in the fluid flow direction along the tapered downstream edge.
    Type: Application
    Filed: April 15, 2022
    Publication date: October 19, 2023
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Oumnia El Fajri, Richard W. SEAVER, Erik D. TORNIAINEN, Anand Samuel JEBAKUMAR, Pavel KORNILOVICH, Alexander GOVYADINOV, Carson DENISON
  • Publication number: 20190299169
    Abstract: An immiscible droplet generation system may include a chip, a microfluidic channel integrated into the chip, an input to the microfluidic channel through which the microfluidic channel is to be filled with a first fluid that is to be moved through the microfluidic channel and a droplet generator. The droplet generator is integrated into the chip to generate a droplet of a second fluid, immiscible within the first fluid, and to inject the droplet into the first fluid in the microfluidic channel.
    Type: Application
    Filed: October 21, 2016
    Publication date: October 3, 2019
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Erik D. TORNIAINEN, Alexander N. GOVYADINOV, Pavel KORNILOVICH, David P. MARKEL, Richard W. SEAVER
  • Patent number: 10343398
    Abstract: An inkjet material dispenser system includes a printhead member. According to one exemplary embodiment, the printhead member includes at least one drop ejector including an insulating stack layer and a top orifice surface defining an orifice, wherein a ratio of a diameter of the orifice to a height of the insulating stack layer (O/L ratio) is at least 1.0.
    Type: Grant
    Filed: February 14, 2018
    Date of Patent: July 9, 2019
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Jeffrey A. Nielsen, Craig Olbrich, Richard W. Seaver, David R. Otis, Jr.
  • Patent number: 10029259
    Abstract: A slot extender includes a reservoir. The reservoir includes a reservoir floor defining a drain opening, a continuous reservoir sidewall extending from the reservoir floor, and a concave fillet running along at least a portion where the reservoir sidewall joins the reservoir floor. The concave fillet has a variable radius.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: July 24, 2018
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Dennis R Esterberg, Frank D Derryberry, Richard W Seaver, Christie Dudenhoefer
  • Publication number: 20180186150
    Abstract: An inkjet material dispenser system includes a printhead member. According to one exemplary embodiment, the printhead member includes at least one drop ejector including an insulating stack layer and a top orifice surface defining an orifice, wherein a ratio of a diameter of the orifice to a height of the insulating stack layer (O/L ratio) is at least 1.0.
    Type: Application
    Filed: February 14, 2018
    Publication date: July 5, 2018
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Jeffrey A. Nielsen, Craig Olbrich, Richard W. Seaver, David R. Otis, JR.
  • Patent number: 9944074
    Abstract: An inkjet material dispenser system includes a printhead member. According to one exemplary embodiment, the printhead member includes at least one drop ejector including an insulating stack layer and a top orifice surface defining an orifice, wherein a ratio of a diameter of the orifice to a height of the insulating stack layer (O/L ratio) is at least 1.0.
    Type: Grant
    Filed: August 15, 2006
    Date of Patent: April 17, 2018
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Jeffrey A. Nielsen, Craig A. Olbrich, Richard W. Seaver, David R. Otis
  • Publication number: 20170312750
    Abstract: A slot extender includes a reservoir. The reservoir includes a reservoir floor defining a drain opening, a continuous reservoir sidewall extending from the reservoir floor, and a concave fillet running along at least a portion where the reservoir sidewall joins the reservoir floor. The concave fillet has a variable radius.
    Type: Application
    Filed: July 14, 2017
    Publication date: November 2, 2017
    Inventors: Dennis R. ESTERBERG, Frank D. DERRYBERRY, Richard W. SEAVER, Christie DUDENHOEFER
  • Patent number: 9776186
    Abstract: A slot extender includes a reservoir. The reservoir includes a reservoir floor defining a drain opening, a continuous reservoir sidewall extending from the reservoir floor, and a concave fillet running along at least a portion where the reservoir sidewall joins the reservoir floor. The concave fillet has a variable radius.
    Type: Grant
    Filed: January 8, 2013
    Date of Patent: October 3, 2017
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Dennis R Esterberg, Frank D Derryberry, Richard W Seaver, Christie Dudenhoefer
  • Publication number: 20150336100
    Abstract: A slot extender includes a reservoir. The reservoir includes a reservoir floor defining a drain opening, a continuous reservoir sidewall extending from the reservoir floor, and a concave fillet running along at least a portion where the reservoir sidewall joins the reservoir floor. The concave fillet has a variable radius.
    Type: Application
    Filed: January 8, 2013
    Publication date: November 26, 2015
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Dennis R ESTERBERG, Frank D DERRYBERRY, Richard W SEAVER, Christie DUDENHOEFER
  • Patent number: 8240828
    Abstract: A fluid ejection cartridge includes a body, having fluid passageways at a first spacing, a die, having fluid passage-ways at a second closer spacing, and an interposer, bonded to the body at a first surface and plasma bonded to the die at a second surface. The interposer includes fluid passageways between the first and second surfaces, which are substantially aligned with the respective passageways of the body and the die.
    Type: Grant
    Filed: January 9, 2008
    Date of Patent: August 14, 2012
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Alok Sharan, Manishi Giri, Siddhartha Bhowmik, Richard W Seaver
  • Publication number: 20100271445
    Abstract: A fluid ejection cartridge includes a body, having fluid passageways at a first spacing, a die, having fluid passage-ways at a second closer spacing, and an interposer, bonded to the body at a first surface and plasma bonded to the die at a second surface. The interposer includes fluid passageways between the first and second surfaces, which are substantially aligned with the respective passageways of the body and the die.
    Type: Application
    Filed: January 9, 2008
    Publication date: October 28, 2010
    Inventors: Alok Sharan, Manishi Giri, Siddhartha Bhowmik, Richard W. Seaver
  • Publication number: 20080043065
    Abstract: An inkjet material dispenser system includes a printhead member. According to one exemplary embodiment, the printhead member includes at least one drop ejector including an insulating stack layer and a top orifice surface defining an orifice, wherein a ratio of a diameter of the orifice to a height of the insulating stack layer (O/L ratio) is at least 1.0.
    Type: Application
    Filed: August 15, 2006
    Publication date: February 21, 2008
    Inventors: Jeffrey A. Nielsen, Craig A. Olbrich, Richard W. Seaver, David R. Otis