Patents by Inventor Zhang-Lin Zhou

Zhang-Lin Zhou 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).

  • Patent number: 10947401
    Abstract: An example of a liquid ink includes a colorant, a co-solvent, and a balance of water. The co-solvent includes a hydantoin having a general formula (I) or a general formula (II) wherein n is an integer greater than 2 and m is an integer equal to or greater than 2.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: March 16, 2021
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Zhang-Lin Zhou, Benjamin Abelovski
  • Patent number: 10920094
    Abstract: The present disclosure is drawn to a reactive polyurethane dispersion including a polymer strand having a polymer backbone that has two ends terminating at a first capping unit and a second capping unit. The polymer backbone can include polymerized monomers including a reactive diol and a diisocyanate. The reactive diol can be an acrylate-containing diol, a methacrylate-containing diol, a styrene-containing diol, or combination thereof. The first capping unit can be a styrene-containing monoalcohol reacted with an isocyanate group of the diisocyanate. The second capping unit can be an ionic stabilizing group.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: February 16, 2021
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Zhang-Lin Zhou, Rodney David Stramel, Qianhan Yang
  • Patent number: 10920074
    Abstract: The present disclosure is drawn to reactive polyurethane dispersions. In one example, a reactive polyurethane dispersion can include a polymer strand having a polymer backbone that has two ends terminating at a first capping unit and a second capping unit. The polymer backbone can include polymerized monomers including a reactive diol and a diisocyanate. The reactive diol can be an acrylate-containing diol, a methacrylate-containing diol, an acrylamide-containing diol, a methacrylamide-containing diol, or combination thereof. The first capping unit can be an acrylamide-containing monoalcohol or methacrylamide-containing monoalcohol reacted with an isocyanate group of the diisocyanate. The second capping unit can be an ionic stabilizing group.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: February 16, 2021
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Zhang-Lin Zhou, Rodney David Stramel, Gregg A. Lane
  • Patent number: 10907057
    Abstract: The present disclosure is drawn to a reactive polyurethane dispersion including a polymer strand having a polymer backbone that has two ends terminating at a first capping unit and a second capping unit. The polymer backbone can include polymerized monomers including a reactive diol and a blend of two or more diisocyanates. The reactive diol can be an acrylate-containing diol, a methacrylate-containing diol, or combination thereof. The first capping unit can be an acrylate-containing monoalcohol or methacrylate-containing monoalcohol reacted with an isocyanate group of the diisocyanates. The second capping unit can be an ionic stabilizing group. The polymer backbone can be devoid of ionic stabilizing groups.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: February 2, 2021
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Zhang-Lin Zhou, Rodney David Stramel, Gregg A. Lane
  • Patent number: 10858380
    Abstract: The present disclosure is drawn to a photo active agent which includes a bisacylphosphinic compound in the form of an acid or salt having Structure I: where A and A? are independently aryl or from C2 to C8 lower alkyl; M is H, a monovalent cation, a divalent cation, or mixture thereof; n is 1 or 2; and q is 1 or 2. The photo active agent can be present in a composition that includes from 0.001 wt % to 5 wt % of a dialcohol phosphinic acid precursor or dialcohol phosphinic salt of the bisacylphosphinic compound of Structure I.
    Type: Grant
    Filed: April 3, 2017
    Date of Patent: December 8, 2020
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Zhang-Lin Zhou, Marisa Samoshin, Rodney David Stramel
  • Patent number: 10857825
    Abstract: The present disclosure relates to an Inkjet printing process that comprises inkjet printing an inkjet ink composition onto a substrate to form a printed inkjet ink layer. The inkjet ink composition comprises a colorant, a curable polyurethane dispersion, a photoinitiator and water, wherein the amount of curable polyurethane dispersed in the inkjet ink composition is 0.1 to 30 weight %. A radiation-curable overcoat composition is applied over the printed inkjet ink layer as an overcoat layer. The overcoat composition comprises a curable polyurethane dispersion, a photoinitiator and water. The printed inkjet ink layer is then cured on the substrate by exposing both the overcoat layer and inkjet ink layer on the substrate to radiation.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: December 8, 2020
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Zhang-Lin Zhou, Rodney David Stramel, Bor-Jiunn Niu
  • Patent number: 10858474
    Abstract: The present disclosure is drawn to a reactive polyurethane dispersion including a polymer strand having a polymer backbone that has two ends terminating at a first capping unit and a second capping unit. The polymer backbone can include polymerized monomers including a reactive diol and a diisocyanate. The reactive diol can be an acrylate-containing diol, a methacrylate-containing diol, an allyl-containing diol, or combination thereof. The first capping unit can be an allyl-containing monoalcohol reacted with an isocyanate group of the diisocyanate. The second capping unit can be an ionic stabilizing group.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: December 8, 2020
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Zhang-Lin Zhou, Rodney David Stramel, Gregg A. Lane
  • Patent number: 10821760
    Abstract: The present disclosure relates to an inkjet printing process that comprises inkjet printing an inkjet ink composition onto a substrate to form a printed inkjet ink layer. The inkjet ink composition comprises a colorant, a curable polyurethane dispersion, a photoinitiator and water, wherein the amount of curable polyurethane dispersed in the inkjet ink composition is 0.1 to 30 weight %. A radiation-curable overcoat composition is inkjet printed over the printed inkjet ink layer as an overcoat layer. The overcoat composition comprises a curable polyurethane dispersion, a photoinitiator and water, wherein the amount of curable polyurethane dispersed in the overcoat composition is 0.1 to 30 weight %. The printed inkjet ink layer is cured by exposing both the printed inkjet ink layer and the overcoat layer on the substrate to radiation.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: November 3, 2020
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Zhang-Lin Zhou, Rodney David Stramel, Gregg A. Lane
  • Patent number: 10723896
    Abstract: The present disclosure relates to an inkjet printing process that comprises applying a radiation-curable primer composition onto a substrate to form a primer layer. The primer composition comprises a curable polyurethane dispersion, a photoinitiator and water. An inkjet ink composition is inkjet printed onto the primer layer as a printed inkjet ink layer. The inkjet ink composition comprises a colorant, a curable polyurethane dispersion, a photoinitiator and water. The curable polyurethane is dispersed in the inkjet ink composition in an amount of composition is 0.1 to 30 weight % of the inkjet ink composition. The printed inkjet ink layer is cured on the substrate by exposing both the primer layer and printed inkjet ink layer on the substrate to radiation.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: July 28, 2020
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Zhang-Lin Zhou, Rodney David Stramel, Tao Chen, Bor-Jiunn Niu, Gregg A. Lane
  • Patent number: 10723897
    Abstract: The present disclosure relates to an inkjet composition comprising a curable polyurethane dispersion and an aqueous carrier.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: July 28, 2020
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Zhang-Lin Zhou, Rodney David Stramel, Gregg A. Lane
  • Publication number: 20200190348
    Abstract: The present disclosure is drawn to inkjet inks, which can include an aqueous ink vehicle and a pigment particle having a block copolymer attached to a surface of the pigment particle. The block copolymer can be linked to the surface through a silyl coupling group. The block copolymer can include a steric stabilizing block formed by polymerizing a monomer having a sterically bulky group, and an ionic stabilizing block formed by polymerizing a monomer having an acidic group or a basic group.
    Type: Application
    Filed: September 19, 2017
    Publication date: June 18, 2020
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Zhang-Lin Zhou, Shao-Wei LI, Gregg A. LANE
  • Publication number: 20200164661
    Abstract: Herein is disclosed a method of transfer inkjet printing comprising jetting a radiation curable inkjet ink onto an intermediate transfer member of an inkjet printer to form an image; irradiating the radiation curable inkjet ink on the intermediate transfer member to form an at least partially cured image; and transferring the at least partially cured image to a substrate to form a printed substrate. Herein is also disclosed a transfer inkjet printing apparatus adapted, in use, to perform the method.
    Type: Application
    Filed: September 25, 2017
    Publication date: May 28, 2020
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Zhang-Lin Zhou, Rodney David Stramel, Gregg A. Lane, Shao-Wei Li, Brian J. Keefe
  • Publication number: 20200148806
    Abstract: The present disclosure is drawn to polyurethane dispersions. In one example, a polyurethane dispersion can include a polyurethane with a polymeric ionic side chain and a polymeric non-ionic side chain. The polyurethane can be formed of polymerized monomers including a diisocyanate, a first polymeric diol, and a second polymeric diol. The first polymeric diol can include a first polymer chain replacing a hydrogen atom of a thiol group of a 1-thioglycerol molecule. The first polymer chain can include a block of a polymerized ionic group-containing vinyl monomer. The second polymeric diol can include a second polymer chain replacing a hydrogen atom of a thiol group of a 1-thioglycerol molecule. The second polymer chain can include a block of a polymerized non-ionic vinyl monomer, and the second polymer chain can be devoid of ionic groups.
    Type: Application
    Filed: October 19, 2017
    Publication date: May 14, 2020
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Zhang-Lin Zhou, Shao-Wei Li, Gregg A. LANE
  • Publication number: 20200148902
    Abstract: The present disclosure is drawn to UV-curable inkjet inks, fluid sets, and printing systems. An example UV-curable inkjet ink can include water, a photo-initiator, from 8 wt % to 25 wt % organic co-solvent, and from 2 wt % to 20 wt % of a polyurethane. The polyurethane can include a polymer strand including a polymer backbone having two ends terminating at first and second capping units. The polymer backbone can be formed of polymerized monomers including a diisocyanate and a reactive diol selected from an acrylate-containing diol or a methacrylate-containing diol. The first capping unit can include an acrylate-containing monoalcohol, a methacrylate-containing monoalcohol, an allyl-containing monoalcohol, an allyl-containing monoamine, a styrene-containing monoalcohol, an acrylamide-containing monoalcohol, or a methacrylamide-containing monoalcohol reacted with an isocyanate group of the diisocyanate.
    Type: Application
    Filed: October 17, 2017
    Publication date: May 14, 2020
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: George SARKISIAN, Zhang-Lin ZHOU, Rodney David STRAMEL
  • Publication number: 20200140711
    Abstract: Herein is disclosed a method of transfer inkjet printing comprising applying a radiation curable primer onto an intermediate transfer member of an inkjet printer to form a radiation curable primer layer; jetting a radiation curable inkjet ink onto the radiation curable primer layer on the intermediate transfer member to form an image; irradiating the radiation curable inkjet ink and the radiation curable primer on the intermediate transfer member to form an at least partially cured image; and transferring the at least partially cured image to a substrate to form a printed substrate. Herein is also disclosed a transfer inkjet printer adapted, in use, to perform the method.
    Type: Application
    Filed: September 25, 2017
    Publication date: May 7, 2020
    Inventors: Zhang-Lin ZHOU, STRAMEL David Rodney, Gregg A. LANE, Yubai Bl, Brian J. KEEFE
  • Patent number: 10640599
    Abstract: The present disclosure is drawn to a reactive polyurethane dispersion including a polymer strand having a polymer backbone that has two ends terminating at a first capping unit and a second capping unit. The polymer backbone can include polymerized monomers including a reactive diol and a diisocyanate. The reactive diol can be an acrylate-containing diol, a methacrylate-containing diol, or combination thereof. The first capping unit can be an acrylate-containing monoalcohol or a methacrylate-containing monoalcohol reacted with an isocyanate group of the diisocyanate. The second capping unit can be 3-(cyclohexylamino)-1-propanesulfonic acid or 2-(cyclohexylamino)ethanesulfonic acid reacted with an isocyanate group of the diisocyanate.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: May 5, 2020
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Zhang-Lin Zhou, Rodney David Stramel, Gregg A. Lane
  • Publication number: 20200131380
    Abstract: Printable compositions comprising a liquid carrier; and a radiation curable polyurethane dispersed in the liquid carrier are described, as well as methods of preparing the printable compositions and methods of printing using the printable compositions.
    Type: Application
    Filed: September 25, 2017
    Publication date: April 30, 2020
    Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
    Inventors: Zhang-Lin Zhou, Gregg A. Lane, Rodney David Stramel, Qianhan Yang
  • Publication number: 20200123400
    Abstract: The present disclosure is drawn inkjet inks, which can include an aqueous ink vehicle and a pigment particle having a block copolymer attached to a surface of the pigment particle. The block copolymer can be linked to the surface through a nitrogen atom-containing coupling group bonded to the surface through the nitrogen atom. The block copolymer can include a steric stabilizing block formed by polymerizing a monomer having a sterically bulky group, and an ionic stabilizing block formed by polymerizing a monomer having an acidic group or a basic group.
    Type: Application
    Filed: September 19, 2017
    Publication date: April 23, 2020
    Applicant: Hewlett-Packard Development Company, L.P.
    Inventors: Zhang-Lin Zhou, Shao-Wei LI
  • Patent number: 10619007
    Abstract: The present disclosure is drawn to polymeric amine synergists, photo curable inks containing the polymeric amine synergists, and methods of making the photo curable inks. A polymeric amine synergist can include an aminobenzene modified with a polyether chain connecting to the aminobenzene through an amide linkage.
    Type: Grant
    Filed: January 27, 2015
    Date of Patent: April 14, 2020
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Zhang-Lin Zhou, Rodney David Stramel, Gregg A. Lane
  • Patent number: 10619065
    Abstract: The present disclosure is drawn to a photo active agent which includes a diphenyl(2,4,6-trimethylbenzoyl)phosphine oxide modified with a tertiary amine having a water solubilizing group attached to the tertiary amine.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: April 14, 2020
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Zhang-Lin Zhou