Patents by Inventor Yael Kowal
Yael Kowal 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).
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Patent number: 11815852Abstract: Herein is described a liquid electrophotographic ink composition including a carrier liquid and a resin including an acid copolymer and an acrylate copolymer, wherein the acrylate copolymer includes at least about 30 wt. % of the alkyl (meth)acrylate monomer.Type: GrantFiled: April 17, 2018Date of Patent: November 14, 2023Assignee: Hewlett-Packard Development Company, L.P.Inventors: Eyal Cohen, Albert Teishev, Reut Avigdor, Yael Kowal-Blau, Tal Rosenthal, Anatoly Sobolevsky
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Patent number: 11442373Abstract: An electrostatic ink composition comprising a carrier liquid; a first resin comprising a copolymer of an alkylene monomer and a methacrylic acid monomer; and a second resin comprising a copolymer of an alkylene monomer and an acrylic acid monomer, wherein the second resin constitutes at least 35 wt. % of the total amount of resin is disclosed.Type: GrantFiled: July 10, 2017Date of Patent: September 13, 2022Assignee: HP Indigo B.V.Inventors: Hanit Marom Tchaicheeyan, Albert Teishev, Igor Shutyi, Yael Kowal-Blau, Matan Schneider
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Patent number: 11333988Abstract: Provided in one example herein is a liquid electrophotographic varnish composition. The composition includes resin particles each including a polymeric resin mixture, which includes a first polymeric resin including an ethylene-based polymer; and a second polymeric resin including a polyamide. The composition also includes a carrier fluid.Type: GrantFiled: June 23, 2015Date of Patent: May 17, 2022Assignee: HP Indigo B.V.Inventors: Getahun Biadglin, Guy Nesher, Ilanit Mor, Haim Cohen, Tony Azzam, Samer Farran, Yael Kowal-Blau, Albert Teishev
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Publication number: 20220066346Abstract: Disclosed herein is a liquid electrophotographic ink composition comprising a first resin comprising a copolymer of an alkylene monomer and a methacrylic acid monomer; a second resin comprising a copolymer of an alkylene monomer and from about 5 wt. % to about 11 wt. % of an acrylic acid monomer; and a colorant in an amount of at least 20 wt. % of the solids of the electrophotographic ink composition. Also disclosed herein is a method of producing a printed substrate from the liquid electrophotographic ink composition.Type: ApplicationFiled: April 30, 2019Publication date: March 3, 2022Applicant: Hewlett-Packard Development Company, L.P.Inventors: Reut Avigdor, Yael Kowal-Blau, Tal Rosenthal, Eyal Cohen, Albert Teishev
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Publication number: 20210088925Abstract: An electrostatic ink composition comprising a carrier liquid; a first resin comprising a copolymer of an alkylene monomer and a methacrylic acid monomer; and a second resin comprising a copolymer of an alkylene monomer and an acrylic acid monomer, wherein the second resin constitutes at least 35 wt. % of the total amount of resin is disclosed.Type: ApplicationFiled: July 10, 2017Publication date: March 25, 2021Inventors: Hanit Marom Tchaicheeyan, Albert Teishev, Igor Shutyi, Yael Kowal-Blau, Matan Schneider
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Publication number: 20200341401Abstract: Herein is described a liquid electrophotographic ink composition including a carrier liquid and a resin including an acid copolymer and an acrylate copolymer, wherein the acrylate copolymer includes at least about 30 wt. % of the alkyl (meth)acrylate monomer.Type: ApplicationFiled: April 17, 2018Publication date: October 29, 2020Applicant: Hewlett-Packard Development Company, L.P.Inventors: Eyal COHEN, Albert TEISHEV, Reut AVIGDOR, Yael KOWAL-BLAU, Tal ROSENTHAL, Anatoly SOBOLEVSKY
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Patent number: 10437167Abstract: Provided in one example herein is a liquid electrophotographic ink composition. The composition includes a charge director, a non-polar carrier fluid comprising a polymer; and ink particles each including a polymeric resin and a pigment dispersed in the resin. The ink composition also includes a tackifier.Type: GrantFiled: July 31, 2015Date of Patent: October 8, 2019Assignee: HP Indigo B.V.Inventors: Reut Avigdor, Tehila Ben-Ezra, Yael Kowal-Blau, Yaron Grinwald, Albert Teishev, Eyal Shelef
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Patent number: 10353325Abstract: The present disclosure relates to a liquid electrophotographic composition comprising: a polymer resin comprising a side group comprising a cross-linkable moiety; and a carrier liquid.Type: GrantFiled: January 21, 2015Date of Patent: July 16, 2019Assignee: HP Indigo B.V.Inventors: Tony Azzam, Ilanit Mor, Samer Farran, Giries Kadis, Guy Nesher, Getahun Biadglin, Haim Cohen, Benjamin Dayan, Yael Kowal-Blau, Albert Teishev, Nurit Carmel-Barnea
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Patent number: 10197931Abstract: A transparent electrophotographic varnish composition comprises a charge adjuvant and inorganic filler particles. A method of manufacturing an electrophotographic varnish composition comprises heating a thermoplastic resin mixture until the resin has melted; cooling the resin mixture to form resin particles; contacting the resin particles with a charge adjuvant and inorganic filler particles to form composite particles or a mixture of particles; and combining the composite particles or particulate mixture with a carrier fluid to form the electrophotographic varnish composition. A liquid electrophotographic printing system and a print substrate are also provided.Type: GrantFiled: October 24, 2014Date of Patent: February 5, 2019Assignee: HP Indigo B.V.Inventors: Haim Cohen, Guy Nesher, Getahun Biadglin, Tony Azzam, Ilanit Mor, Samer Farran, Yael Kowal-Blau
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Patent number: 10168629Abstract: A liquid electrophotographic varnish composition comprising: a polymer resin; an epoxy-based cross-linking agent; a solid catalyst comprising at least one amine group; and a carrier liquid.Type: GrantFiled: January 19, 2015Date of Patent: January 1, 2019Assignee: HP Indigo B.V.Inventors: Tony Azzam, Ilanit Mor, Samer Farran, Albert Teishev, Guy Nesher, Getahun Biadglin, Haim Cohen, Benjamin Dayan, Yael Kowal-Blau, Eyal Shelef
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Patent number: 10139742Abstract: An electrophotographic varnish composition that comprises, in a liquid carrier, a polymeric resin; an epoxy-based cross-linking agent, a mono-epoxy diluent and a metal catalyst and/or a photo-initiator. Also described herein is a method for making such electrophotographic varnish composition.Type: GrantFiled: February 11, 2015Date of Patent: November 27, 2018Assignee: HP Indigo B.V.Inventors: Tony Azzam, Ilanit Mor, Samer Farran, Guy Nesher, Getahun Biadglin, Haim Cohen, Yael Kowal-Blau, Albert Teishev, Nurit Carmel-Barnea
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Publication number: 20180267439Abstract: The present disclosure relates to a liquid electrophotographic composition comprising: a polymer resin comprising a side group comprising a cross-linkable moiety; and a carrier liquid.Type: ApplicationFiled: January 21, 2015Publication date: September 20, 2018Inventors: Tony Azzam, Ilanit Mor, Samer Farran, Giries Kadis, Guy Nesher, Getahun Biadglin, Haim Cohen, Benjamin Dayan, Yael Kowal-Blau, Albert Teishev, Nurit Carmel-Barnea
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Publication number: 20180120725Abstract: Provided in one example herein is a liquid electrophotographic ink composition. The composition includes a charge director, a non-polar carrier fluid comprising a polymer; and ink particles each including a polymeric resin and a pigment dispersed in the resin. The ink composition also includes a tackifier.Type: ApplicationFiled: July 31, 2015Publication date: May 3, 2018Inventors: Reut Avigdor, Tehila Ben-Ezra, Yael Kowal-Blau, Yaron Grinwald, Albert Teishev, Eyal Shelef
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Publication number: 20180120717Abstract: Provided in one example herein is a liquid electrophotographic varnish composition. The composition includes resin particles each including a polymeric resin mixture, which includes a first polymeric resin including an ethylene-based polymer; and a second polymeric resin including a polyamide. The composition also includes a carrier fluid.Type: ApplicationFiled: June 23, 2015Publication date: May 3, 2018Applicant: HP INDIGO B.V.Inventors: Getahun Biadglin, Guy Nesher, Ilanit Mor, Haim Cohen, Tony Azzam, Samer Farran, Yael Kowal-Blau, Albert Teishev
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Publication number: 20180074420Abstract: A transparent electrophotographic varnish composition comprises a charge adjuvant and inorganic filler particles. A method of manufacturing an electrophotographic varnish composition comprises heating a thermoplastic resin mixture until the resin has melted; cooling the resin mixture to form resin particles; contacting the resin particles with a charge adjuvant and inorganic filler particles to form composite particles or a mixture of particles; and combining the composite particles or particulate mixture with a carrier fluid to form the electrophotographic varnish composition. A liquid electrophotographic printing system and a print substrate are also provided.Type: ApplicationFiled: October 24, 2014Publication date: March 15, 2018Inventors: Haim Cohen, Guy Nesher, Getahun Biadglin, Tony Azzam, Ilanit Mor, Samer Farran, Yael Kowal-Blau
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Publication number: 20180017883Abstract: An electrophotographic varnish composition that comprises, in a liquid carrier, a polymeric resin; an epoxy-based cross-linking agent, a mono-epoxy diluent and a metal catalyst and/or a photo-initiator. Also described herein is a method for making such electrophotographic varnish composition.Type: ApplicationFiled: February 11, 2015Publication date: January 18, 2018Inventors: Tony Azzam, Ilanit Mor, Samer Farran, Guy Nesher, Getahun Biadglin, Haim Cohen, Yael Kowal-Blau, Albert Teishev, Nurit Carmel-Barnea
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Publication number: 20180004104Abstract: A liquid electrophotographic varnish composition comprising: a polymer resin; an epoxy-based cross-linking agent; a solid catalyst comprising at least one amine group; and a carrier liquid.Type: ApplicationFiled: January 19, 2015Publication date: January 4, 2018Inventors: Tony Azzam, Ilanit Mor, Samer Farran, Albert Teishev, Guy Nesher, Getahun Biadglin, Haim Cohen, Benjamin Dayan, Yael Kowal-Blau, Eyal Shelef
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Patent number: 9709915Abstract: Herein is disclosed an electrostatic ink composition comprising: a) chargeable particles comprising a resin; b) a charge director comprising a sulfosuccinate salt of the general formula M?Am, wherein M? is a metal, m is the valence of M?, and A is an ion of the general formula (I): (I) [R3—O—C(O)CH2CH(SO3)C(O)—O—R4]? wherein each of R3 and R4 is an alkyl group; and c) an optionally substituted naphthalene-sulfonate moiety. Also disclosed is a method of manufacturing an electrostatic ink composition and a printed medium having printed thereon an electrostatic ink composition.Type: GrantFiled: January 24, 2014Date of Patent: July 18, 2017Assignee: Hewlett-Parkard Indigo B.V.Inventors: Emad Masoud, Yael Kowal-Blau, Albert Teishev, Nurit Carmel-Barnea
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Patent number: 9523933Abstract: Methods of Printing and Electrostatic Ink Compositions Herein are disclosed electrostatic ink compositions, methods of printing and printed substrates. In some examples, the electrostatic ink composition comprises a carrier liquid, particles comprising a graft co-polymer comprising an acrylate polymer backbone onto which has been grafted polysiloxane side chains, wherein the particles are dispersed in the carrier liquid.Type: GrantFiled: November 20, 2012Date of Patent: December 20, 2016Assignee: Hewlett-Packard Indigo B.V.Inventors: Emad Masoud, Jr., Yael Kowal-Blau, Albert Teishev, Ilanit Mor, Nurit Carmel-Barnea, Julia Kornilov
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Publication number: 20160306287Abstract: Herein is disclosed an electrostatic ink composition comprising: a) chargeable particles comprising a resin; b) a charge director comprising a sulfosuccinate salt of the general formula M?Am, wherein M? is a metal, m is the valence of M?, and A is an ion of the general formula (I): (I) [R3—O—C(O)CH2CH(SO3)C(O)—O—R4]? wherein each of R3 and R4 is an alkyl group; and c) an optionally substituted naphthalene-sulfonate moiety. Also disclosed is a method of manufacturing an electrostatic ink composition and a printed medium having printed thereon an electrostatic ink composition.Type: ApplicationFiled: January 24, 2014Publication date: October 20, 2016Inventors: Emad Masoud, Yael Kowal-Blau, Albert Teishev, Nurit Carmel-Barnea