Patents by Inventor Linfang Zhu
Linfang Zhu 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: 20240076511Abstract: The present invention relates to inkjet ink compositions that take advantage of solvent mixtures containing an ester, a ketone, and optionally an alcohol, in order to provide ink compositions that have suitable qualities for inkjet printing. Preferred ink compositions include a C1-C3 alkyl ester of C1-C3 carboxylic acid, a C3-C7 ketone, and optionally a C2-C3 alkyl alcohol.Type: ApplicationFiled: November 10, 2023Publication date: March 7, 2024Inventors: David Majewski, Zheng Xue, Linfang Zhu, John Folkers, Hanyan Meng
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Publication number: 20240043707Abstract: The invention relates to a high adhesion ink with good abrasion resistance, useful for inkjet printing. These inks include a first resin comprising a polymer comprising vinyl chloride or a polymer comprising vinyl acetate, the first resin having a weight average molecular weight between about 20 kDa and about 80 kDa, a second resin comprising a tackifier resin with a weight average molecular weight between about 200 Da and about 2.5 kDa, and a third resin with a weight average molecular weight between about 500 Da and about 40 kDa.Type: ApplicationFiled: December 9, 2021Publication date: February 8, 2024Applicant: Videojet Technologies Inc.Inventors: Zheng Xue, Stormi Tindall, Michael Kozee, Linfang Zhu
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Publication number: 20230242777Abstract: Embodiment of the present invention relate to a continuous inkjet ink composition which uses a higher order ketone solvent or solvents (ketones having 5 or more carbon atoms) in place or more hazardous solvents such as methyl ethyl ketone and a secondary solvent with a higher derived no effect inhalation level greater than 200 mg/m3 such as ethanol. These ink compositions contain a combination of resins including a cellulose resin and a polyurethane resin or an acrylic resin, with an optional third resin. A colorant (i.e., a dye, preferably a conductive dye) also is included.Type: ApplicationFiled: February 1, 2022Publication date: August 3, 2023Inventors: Zheng Xue, Michael Kozee, Linfang Zhu
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Patent number: 11702558Abstract: This specification discloses non-aqueous solvent, pigmented ink formulations that are suitable for the electronic and aerospace industries and form printed marks that are resistant to smearing and dissolution by organic solvents commonly used in overcoatings in this industry and others. These ink formulations are based on use of an acidic resin with an inherent acid value of at least about 25 mg KOH/g, preferably at least partially neutralized by a quaternary ammonium hydroxide and/or alcohol amine acid neutralizing or modifying agent.Type: GrantFiled: September 25, 2020Date of Patent: July 18, 2023Inventors: Wei Weng, Fengfei Xiao, Godwin Deng, Linfang Zhu
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Publication number: 20220315795Abstract: The present invention is a thermal inkjet ink that provides good reliability at a wide range of industrial print conditions from both low temperature to high temperature environments across a broad range of humidities. It is particularly advantageous in low-temperature applications, for example, printing at temperatures down to 5° C. or lower continuously for 8 hours without developing print defects which can lead to unreadable codes; and, in the meantime also maintains other critical functional aspects including contrast, wetting, decap time, dry time, adhesion, ink cartridge stability, etc. The inks contain one or more binder resins that exhibit a hydroxyl number or acid number of at least 100 mg KOH/g; one or more terpene phenolic resins; one or more volatile organic solvents; and one or more dyes, and optionally further components.Type: ApplicationFiled: April 30, 2020Publication date: October 6, 2022Inventors: Zheng Xue, Stormi Tindall, Vanessa Demarco, Michael Kozee, Linfang Zhu
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Publication number: 20220098429Abstract: This specification discloses non-aqueous solvent, pigmented ink formulations that are suitable for the electronic and aerospace industries and form printed marks that are resistant to smearing and dissolution by organic solvents commonly used in overcoatings in this industry and others. These ink formulations are based on use of an acidic resin with an inherent acid value of at least about 25 mg KOH/g, preferably at least partially neutralized by a quaternary ammonium hydroxide and/or alcohol amine acid neutralizing or modifying agent.Type: ApplicationFiled: September 25, 2020Publication date: March 31, 2022Inventors: Wei Weng, Fengfei Xiao, Godwin Deng, Linfang Zhu
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Patent number: 11208569Abstract: Embodiments of the invention relate to ink compositions suitable for applications in the printing industry, for example continuous inkjet printing, including ultra-high speed continuous inkjet printing. The ink compositions use volatile organic solvents, a colorant, and one or more binder resins including a resin that is a phenolic resole resin, wherein the ink composition is free of methanol, halogens, halogenated compounds and bisphenol-A. A phenolic resole resin of the ink composition preferably contains less than 0.1% by weight of free formaldehyde. The one or more binder resins including the phenolic resole resin may be present in an amount that is from about 5% to about 30% by weight of the ink composition.Type: GrantFiled: October 15, 2018Date of Patent: December 28, 2021Assignee: VIDEOJET TECHNOLOGIES INC.Inventors: Wei Weng, Fengfei Xiao, Godwin Deng, Linfang Zhu
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Publication number: 20210238434Abstract: The invention provides stable nucleic acid-tagged ink compositions suitable for printing an ink mark on an object as an identifier or for authentication of goods, and methods of marking an article with such a mark. These ink compositions contain a specific nucleic acid of known length and sequence that can be deposited on an article by inkjet printing or thermal transfer printing to produce a mark, which may be visible or invisible, covert or overt. These ink products are stable and can accurately deliver an amount of nucleic acid tag that can be removed or sampled and analyzed by known DNA analytical methods to detect the specific nucleic acid on the marked article but which cannot be identified without previous knowledge of the nucleic acid sequence in the mark. The invention also provides methods of applying these tagged marks using inkjet printers and printer systems, and the systems for using the tagged ink compositions.Type: ApplicationFiled: June 6, 2019Publication date: August 5, 2021Inventors: Michael KOZEE, Linfang ZHU, Zheng XUE, Lawrence JUNG
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Publication number: 20200332136Abstract: Embodiments of the invention relate to ink compositions suitable for applications in the printing industry, for example continuous inkjet printing, including ultra-high speed continuous inkjet printing. The ink compositions use volatile organic solvents, a colorant, and one or more binder resins including a resin that is a phenolic resole resin, wherein the ink composition is free of methanol, halogens, halogenated compounds and bisphenol-A. A phenolic resole resin of the ink composition preferably contains less than 0.1% by weight of free formaldehyde. The one or more binder resins including the phenolic resole resin may be present in an amount that is from about 5% to about 30% by weight of the ink composition.Type: ApplicationFiled: October 15, 2018Publication date: October 22, 2020Inventors: Wei Weng, Fengfei Xiao, Godwin Deng, Linfang Zhu
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Publication number: 20200079967Abstract: Embodiments of the invention relate to ink compositions suitable for applications in the printing industry, for example continuous inkjet printing, including ultra-high speed continuous inkjet printing. The ink compositions use volatile C5 ketone (pentanone) solvents (e.g., 2-pentanone, 3-pentanone, or 3-methyl-2-butanone) as a major solvent or the only solvent, and also include a binder resin and a colorant, but preferably contain substantially no acetone, methanol, or methyl ethyl ketone, or other solvents listed on the Japan ISHL class II organic solvents list. Preferred ink compositions can contain up to 30% ethanol, n-propanol, or other solvents not listed on the Japan ISHL class II organic solvents list, but preferably contain substantially no ethanol.Type: ApplicationFiled: April 12, 2018Publication date: March 12, 2020Inventors: Fengfei Xiao, Godwin Deng, Linfang Zhu
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Patent number: 10435574Abstract: A thermal ink jet ink composition include a volatile organic solvent, a binder resin, a dye, a humectant in an amount from 1% to 40% by weight of the ink composition, and an additive for extending the decap time. The additive is present in an amount greater than 0.1% by weight of the thermal ink jet ink composition. The additive is selected from fluorinated surfactants, ionic surfactants, and nonionic surfactants.Type: GrantFiled: December 21, 2015Date of Patent: October 8, 2019Assignee: VIDEOJET TECHNOLOGIES INC.Inventors: Anthony Selmeczy, Kyle Harvey, Casey Robertson, Linfang Zhu
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Patent number: 9988545Abstract: A thermal ink jet ink composition includes one or more volatile organic solvents, wherein the one or more volatile organic solvents are selected from C1-C4 alcohols, C3-C6 ketones, C3-C6 esters, C4-C8 ethers, and mixtures thereof; one or more binder resins; and one or more dyes. The ink composition is suitable for use in a thermal ink jet printer and the ink composition has a slow rate of kogation such that it is capable of being printed at least 10 million drops per nozzle from the thermal ink jet printer before drop weight of the ink composition is reduced by more than 10%.Type: GrantFiled: April 28, 2017Date of Patent: June 5, 2018Assignee: Videojet Technologies Inc.Inventors: Casey Robertson, Anthony Selmeczy, Linfang Zhu
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Publication number: 20180002554Abstract: A thermal ink jet ink composition include a volatile organic solvent, a binder resin, a dye, a humectant in an amount from 1% to 40% by weight of the ink composition, and an additive for extending the decap time. The additive is present in an amount greater than 0.1% by weight of the thermal ink jet ink composition. The additive is selected from fluorinated surfactants, ionic surfactants, and nonionic surfactants.Type: ApplicationFiled: December 21, 2015Publication date: January 4, 2018Inventors: Anthony SELMECZY, Kyle HARVEY, Casey ROBERTSON, Linfang ZHU
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Patent number: 9752039Abstract: A thermal ink jet ink composition includes at least 50% by weight volatile organic solvent selected from C1-C4 alcohols, C3-C6 ketones, C3-C6 esters, C4-C8 ethers, and mixtures thereof; a colorant; a humectant present in an amount from about 1% to about 30% by weight; from 0.3% to 8% by weight of a binder resin; and not more than 5% by weight water; wherein the ink composition is compatible with components of a thermal ink jet printer.Type: GrantFiled: October 28, 2015Date of Patent: September 5, 2017Assignee: Videojet Technologies Inc.Inventors: Kyle Harvey, Michael Kozee, Linfang Zhu, Casey Robertson, Anthony Selmeczy
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Publication number: 20170240757Abstract: A thermal ink jet ink composition includes one or more volatile organic solvents, wherein the one or more volatile organic solvents are selected from C1-C4 alcohols, C3-C6 ketones, C3-C6 esters, C4-C8 ethers, and mixtures thereof; one or more binder resins; and one or more dyes. The ink composition is suitable for use in a thermal ink jet printer and the ink composition has a slow rate of kogation such that it is capable of being printed at least 10 million drops per nozzle from the thermal ink jet printer before drop weight of the ink composition is reduced by more than 10%.Type: ApplicationFiled: April 28, 2017Publication date: August 24, 2017Inventors: Casey ROBERTSON, Anthony SELMECZY, Linfang ZHU
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Patent number: 9662920Abstract: A method of printing a security code on an article includes applying droplets of an ink composition with an ink jet printer to a surface of an article to print an encrypted code. The ink composition includes an organic solvent, a binder resin, and a luminescent dye.Type: GrantFiled: December 16, 2015Date of Patent: May 30, 2017Assignee: Videojet Technologies Inc.Inventors: Michael Kozee, Jeffrey Pierce, Michael Sullivan, Linfang Zhu
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Patent number: 9631103Abstract: An ink jet ink composition includes an organic solvent in an amount between 60% and 95% by weight of the ink composition, a binder resin, a stabilizing agent, which may be provided by the binder resin, and a pH sensitive dye. An image formed by the ink composition changes from a first color to a second color when exposed to water, wherein the first color is different than the second color.Type: GrantFiled: June 19, 2013Date of Patent: April 25, 2017Assignee: Videojet Technologies Inc.Inventors: Michael Kozee, Linfang Zhu
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Publication number: 20160101639Abstract: A method of printing a security code on an article includes applying droplets of an ink composition with an ink jet printer to a surface of an article to print an encrypted code. The ink composition includes an organic solvent, a binder resin, and a luminescent dye.Type: ApplicationFiled: December 16, 2015Publication date: April 14, 2016Inventors: Michael KOZEE, Jeffrey PIERCE, Michael SULLIVAN, Linfang ZHU
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Patent number: 9296911Abstract: A thermal ink jet ink composition include a volatile organic solvent, a binder resin, a dye, a humectant in an amount from 1% to 40% by weight of the ink composition, and an additive for extending the decap time. The additive is present in an amount greater than 0.01% by weight of the thermal ink jet ink composition. The additive is selected from fluorinated surfactants, ionic surfactants, and nonionic surfactants.Type: GrantFiled: December 23, 2014Date of Patent: March 29, 2016Assignee: Videojet Technologies Inc.Inventors: Anthony Selmeczy, Kyle Harvey, Casey Robertson, Linfang Zhu
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Publication number: 20160046817Abstract: A thermal ink jet ink composition includes at least 50% by weight volatile organic solvent selected from C1-C4 alcohols, C3-C6 ketones, C3-C6 esters, C4-C8 ethers, and mixtures thereof; a colorant; a humectant present in an amount from about 1% to about 30% by weight; from 0.3% to 8% by weight of a binder resin; and not more than 5% by weight water; wherein the ink composition is compatible with components of a thermal ink jet printer.Type: ApplicationFiled: October 28, 2015Publication date: February 18, 2016Inventors: Kyle Harvey, Michael Kozee, Linfang Zhu, Casey Robertson, Anthony Selmeczy