Patents by Inventor Rada Nuchimov
Rada Nuchimov 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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Publication number: 20230125335Abstract: Herein is described a light-emitting electrochemical cell comprising: a first electrode and a second electrode; a light-emitting layer disposed between the first and second electrodes and comprising a printed electrostatic ink comprising a thermoplastic resin having dispersed therein an electroluminescent material. Also described herein is a method of making an electrostatic ink, the method comprising: providing a carrier fluid (i) in which is dispersed a molten or a dissolved thermoplastic polymer resin and (ii) containing particles of an electroluminescent material suspended therein; effecting precipitation of the polymer resin from the carrier fluid onto the electroluminescent material to form particles comprising the electroluminescent material with a coating comprising the thermoplastic resin in solid form thereon. Also described herein is an electrostatic ink comprising: chargeable particles comprising an electroluminescent material having a coating of a thermoplastic resin thereon.Type: ApplicationFiled: April 9, 2020Publication date: April 27, 2023Inventors: Samer Farran, Yaron Grinwald, Rada Nuchimov, Ofir Bros
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Publication number: 20220206407Abstract: Described herein is a liquid electrostatic ink composition comprising a liquid carrier; and chargeable toner particles comprising a resin and an aluminium-based color-shifting pigment. Also described herein is a method of printing comprising: printing onto a substrate a liquid electrostatic ink composition comprising: a liquid carrier; and chargeable toner particles comprising a resin and an aluminium-based color-shifting pigment, and a printed article comprising a print substrate having printed thereon the electrostatic ink composition.Type: ApplicationFiled: July 31, 2019Publication date: June 30, 2022Applicant: Hewlett-Packard Development Company, L.P.Inventors: Olga Kagan, Vladislav KAPLOUN, Rada NUCHIMOV, Michael KOKOTOV, Yaron GRINWALD, Albert TEISHEV, Ofir BROS, Samer FARRAN
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Patent number: 11236248Abstract: A method for producing a conductive liquid electrophotographic ink composition is described, the method comprising: heating a polymer resin in a carrier fluid to dissolve the polymer resin; adding conductive metallic pigment particles to be coated to the carrier fluid; cooling the carrier fluid to effect precipitation of the polymer resin from the carrier fluid such that a coating of the resin is at least partially formed on the conductive metallic pigment particles; reheating the suspension of partially coated conductive metallic pigment particles in the carrier fluid; and cooling the carrier fluid at a controlled rate to effect precipitation of the polymer resin from the carrier fluid such that a coating of the resin is formed on the conductive metallic pigment particles, thereby producing the conductive liquid electrophotographic ink composition.Type: GrantFiled: March 4, 2016Date of Patent: February 1, 2022Assignee: HP Indigo B.V.Inventors: Olga Kagan, Yaron Grinwald, Rada Nuchimov, Shiran Zabar, Eyal Negreanu, Guy Nesher
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Patent number: 10761445Abstract: According to an example, a resin, a carrier liquid, and a pearlescent pigment may be mixed to form a liquid electrophotographic ink.Type: GrantFiled: March 24, 2016Date of Patent: September 1, 2020Assignee: HP Indigo B.V.Inventors: Olga Kagan, Emad Masoud, Yana Reznick, Rada Nuchimov, Danny Feldman, Haim Cohen, Shiran Zabar, Yaron Grinwald, Michael Kokotov
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Patent number: 10591838Abstract: Disclosed herein is an electrostatic ink composition. The composition may comprise a carrier liquid, which has suspended therein: thermochromic pigment particles having a layer of thermoplastic resin thereon. Method for forming electrostatic ink composition and a substrate having the electrostatic ink composition printed thereon are also disclosed herein.Type: GrantFiled: March 18, 2016Date of Patent: March 17, 2020Assignee: HP Indigo B.V.Inventors: Olga Kagan, Danny Feldman, Rada Nuchimov, Yaron Grinwald, Shiran Zabar, Gleb Romantcov
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Publication number: 20190018332Abstract: According to an example, a resin, a carrier liquid, and a pearlescent pigment may be mixed to form a liquid electrophotographic ink.Type: ApplicationFiled: March 24, 2016Publication date: January 17, 2019Applicant: HP Indigo B.V.Inventors: Olga KAGAN, Emad MASOUD, Yana REZNICK, Rada NUCHIMOV, Danny FELDMAN, Haim COHEN, Shiran ZABAR, Yaron GRINWALD, Michael KOKOTOV
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Publication number: 20190016907Abstract: Disclosed herein is an electrostatic ink composition. The composition may comprise a carrier liquid, which has suspended therein: thermochromic pigment particles having a layer of thermoplastic resin thereon. Method for forming electrostatic ink composition and a substrate having the electrostatic ink composition printed thereon are also disclosed herein.Type: ApplicationFiled: March 18, 2016Publication date: January 17, 2019Applicant: HP Indigo B.V.Inventors: Olga KAGAN, Danny FELDMAN, Rada NUCHIMOV, Yaron GRINWALD, Shiran ZABAR, Gleb ROMANTCOV
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Publication number: 20180371279Abstract: A method for producing a conductive liquid electrophotographic ink composition is described, the method comprising: heating a polymer resin in a carrier fluid to dissolve the polymer resin; adding conductive metallic pigment particles to be coated to the carrier fluid; cooling the carrier fluid to effect precipitation of the polymer resin from the carrier fluid such that a coating of the resin is at least partially formed on the conductive metallic pigment particles; reheating the suspension of partially coated conductive metallic pigment particles in the carrier fluid; and cooling the carrier fluid at a controlled rate to effect precipitation of the polymer resin from the carrier fluid such that a coating of the resin is formed on the conductive metallic pigment particles, thereby producing the conductive liquid electrophotographic ink composition.Type: ApplicationFiled: March 4, 2016Publication date: December 27, 2018Applicant: HP Indigo B.V.Inventors: Olga KAGAN, Yaron GRINWALD, Rada NUCHIMOV, Shiran ZABAR, Eyal NEGREANU, Guy NESHER
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Patent number: 9874828Abstract: Herein is disclosed an electrostatic ink composition comprising a resin and a conductive pigment, wherein the resin comprises a co-polymer formed from an alkylene monomer, an acrylic ester monomer and a maleic anhydride monomer, wherein, in some examples, the acrylic ester monomer constitutes at least about 8 wt % of the co-polymer. Herein is also disclosed a print substrate having printed thereon an electrostatic ink comprising a resin and a conductive pigment, wherein the resin comprises a co-polymer formed from an alkylene monomer, an acrylic ester monomer and a maleic anhydride monomer, wherein, in some examples, the acrylic ester monomer constitutes at least about 8 wt % of the co-polymer.Type: GrantFiled: October 25, 2013Date of Patent: January 23, 2018Assignee: Hewlett-Packard Indigo B.V.Inventors: Reut Avigdor, Nurit Carmel-Barnea, Rada Nuchimov, Yaron Grinwald
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Publication number: 20170205724Abstract: There is provided an electrostatic ink composition comprising chargeable particles comprising a resin and a conductive pigment; a charge director comprising a sulfosuccinate salt of the general formula MAn, wherein M is a metal, n is the valence of M, and A is an ion of the general formula [R1—O—C(O)CH2CH(SO3)C(O)—O—R2] wherein each of R1 and R2 is an a Ikyl group; and a dispersant being or comprising a succinimide linked to a basic group. A method of manufacturing an electrostatic ink composition and a print medium are also described.Type: ApplicationFiled: July 18, 2014Publication date: July 20, 2017Inventors: Yaron Grinwald, Rada Nuchimov, Gil Bar-Haim
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Patent number: 9657189Abstract: There is provided a method of producing an electrostatic ink composition, the method comprising: mixing a resin, a liquid carrier, and a conductive metallic pigment having a coating of surfactant thereon, to form an electrostatic ink composition comprising the resin and the conductive metallic pigment dispersed in the liquid carrier. An electrostatic ink composition and a substrate are also described.Type: GrantFiled: May 31, 2012Date of Patent: May 23, 2017Assignee: Hewlett-Packard Indigo B.V.Inventors: Eyal Negreanu, Rada Nuchimov, Vladislav Kaploun, Gregory Katz, Inbar Adi, Yaron Grinwald, Reut Avigdor
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Publication number: 20160246204Abstract: Herein is disclosed an electrostatic ink composition comprising a resin and a conductive pigment, wherein the resin comprises a co-polymer formed from an alkylene monomer, an acrylic ester monomer and a maleic anhydride monomer, wherein, in some examples, the acrylic ester monomer constitutes at least about 8 wt % of the co-polymer. Herein is also disclosed a print substrate having printed thereon an electrostatic ink comprising a resin and a conductive pigment, wherein the resin comprises a co-polymer formed from an alkylene monomer, an acrylic ester monomer and a maleic anhydride monomer, wherein, in some examples, the acrylic ester monomer constitutes at least about 8 wt % of the co-polymer.Type: ApplicationFiled: October 25, 2013Publication date: August 25, 2016Inventors: Reut Avigdor, Nurit Carmel-Barnea, Rada Nuchimov, Yaron Grinwald
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Publication number: 20150064424Abstract: There is provided a method of producing an electrostatic ink composition, the method comprising: mixing a resin, a liquid carrier, and a conductive metallic pigment having a coating of surfactant thereon, to form an electrostatic ink composition comprising the resin and the conductive metallic pigment dispersed in the liquid carrier. An electrostatic ink composition and a substrate are also described.Type: ApplicationFiled: May 31, 2012Publication date: March 5, 2015Inventors: Eyal Negreanu, Rada Nuchimov, Vladislav Kaploun, Gregory Katz, Inbar Adi, Yaron Grinwald, Reut Avigdor