Patents by Inventor Jayprakash C. Bhatt
Jayprakash C. Bhatt 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: 20190153252Abstract: The present disclosure is drawn to ink compositions including an aqueous liquid vehicle, from 2 wt % to 7 wt % self-dispersed pigment dispersed in the aqueous liquid vehicle, and from 0.1 wt % to 1 wt % monovalent salt. The self-dispersed pigment to monovalent salt weight ratio in the ink composition can be from 3:1 to 35:1.Type: ApplicationFiled: October 6, 2016Publication date: May 23, 2019Applicant: Hewlett-Packard Development Company, L.P.Inventors: Larrie DEARDUFF, Jayprakash C. BHATT, Milton Neill JACKSON
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Patent number: 10294382Abstract: The present disclosure is drawn to a dispersed magenta pigment blend, including a first pigment including Pigment Violet 19 and Pigment Red 122, or Pigment Red 282; and a second pigment including Pigment Red 150. The weight ratio of the first pigment to the second pigment can be from 50:50 to 80:20 by pigment solids content.Type: GrantFiled: May 31, 2018Date of Patent: May 21, 2019Assignee: Hewlett-Packard Development Company, L.P.Inventors: Larrie Deardurff, Jr., Jayprakash C. Bhatt, Cory J. Ruud, Sterling Chaffins, Matthew Thornberry
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Patent number: 10294381Abstract: The present disclosure is drawn to a pigment-based inkjet ink and methods. The inkjet ink includes water; from 2 wt % to 9 wt % pigment solids; from 0.05 wt % to 2 wt % of an acetylenic diol non-ionic surfactant; from 0.05 wt % to 2 wt % of a second surfactant. The second surfactant can be a polysorbate having at least 50% lipophilic oleic acid groups and having an HLB value of less than 15, or a C12-C18 polyoxyethylene glycol ether having an ethylene oxide number less than 20, or a perfluoropolyether including a polyethylene glycol primary alcohol or diol. The inkjet ink also includes from 5 wt % to 50 wt % of an organic solvent system comprising triethylene glycol and a cyclic amide.Type: GrantFiled: June 4, 2014Date of Patent: May 21, 2019Assignee: Hewlett-Packard Development Company, L.P.Inventors: Sterling Chaffins, Kevin P. DeKam, Jayprakash C. Bhatt, Larrie Deardurff, Cory J. Ruud, Matthew Thornberry
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Publication number: 20180298213Abstract: The present disclosure is drawn to ink compositions including from 1 wt % to 8 wt % pigment load, and a polymer dispersant associated with pigment, the polymer dispersant having hydrophilic moieties and hydrophobic moieties, a molecular weight ranging from 5,000 Mw to 25,000 Mw, and an acid number from about 40 to about 180. The polymer dispersant to pigment weight ratio can be less than 0.33.Type: ApplicationFiled: January 22, 2016Publication date: October 18, 2018Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Jayprakash C. Bhatt, Palitha Wickramanayake
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Publication number: 20180273784Abstract: The present disclosure is drawn to a dispersed magenta pigment blend, including a first pigment including Pigment Violet 19 and Pigment Red 122, or Pigment Red 282; and a second pigment including Pigment Red 150. The weight ratio of the first pigment to the second pigment can be from 50:50 to 80:20 by pigment solids content.Type: ApplicationFiled: May 31, 2018Publication date: September 27, 2018Applicant: Hewlett-Packard Development Company, L.P.Inventors: Larrie Deardurff, Jayprakash C. Bhatt, Cory J. Ruud, Sterling Chaffins, Matthew Thornberry
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Patent number: 10047233Abstract: The present disclosure is drawn to a magenta pigment blend, a magenta ink, and a method of formulation a magenta pigment blend. The magenta pigment blend can be a first pigment including a solid solution of Pigment Violet 19 and Pigment Red 122, or Pigment Red 282; and a second pigment including Pigment Red 150. The weight ratio of the first pigment to the second pigment can be from 50:50 to 80:20 by pigment solids content.Type: GrantFiled: June 4, 2014Date of Patent: August 14, 2018Assignee: Hewlett-Packard Development Company, L.P.Inventors: Larrie Deardurff, Jayprakash C. Bhatt, Cory J. Ruud, Sterling Chaffins, Matthew Thornberry
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Patent number: 10040959Abstract: The present disclosure is drawn to inkjet inks and related methods. The inkjet ink includes water, from 5 wt % to 50 wt % of an organic solvent system, from 2 wt % to 9 wt % pigment solids, from 0.1 wt % to 3 wt % polyurethane binder, and from 0.4 wt % to 1.5 wt % of an oleyl or stearyl type polyoxyethylene glycol ether surfactant.Type: GrantFiled: June 4, 2014Date of Patent: August 7, 2018Assignee: Hewlett-Packard Development Company, L.P.Inventors: Larrie Deardurff, Jayprakash C. Bhatt, Sterling Chaffins, Cory J. Ruud
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Publication number: 20180194958Abstract: The present disclosure is drawn to ink compositions comprising from 1 wt % to 8 wt % of a colored pigment and a polymeric dispersant. The polymeric dispersant can be associated with the pigment and the weight ratio of the polymeric dispersant to pigment can be less than 0.33. The polymeric dispersant can have hydrophilic moieties and hydrophobic moieties and an acid number from about 40 to about 180. The ink composition can have an effective charge stabilization from about 0.3 to about 1.8 that is calculated based on a product of the acid number of the polymeric dispersant, the polymer dispersant to pigment weight ratio, and the pigment load in the ink.Type: ApplicationFiled: October 14, 2015Publication date: July 12, 2018Applicant: Hewlett-Packard Development Company, L.P.Inventors: Jayprakash C. Bhatt, Palitha Wickramanayake
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Patent number: 9925811Abstract: Methods, apparatus, systems and articles of manufacture to control operation of a printer based on whether a marker is detected in a pigment ink are disclosed. Example apparatus include an optical sensor to detect a marker in a vehicle component of the pigment ink. The vehicle is depleted of a pigment component. The apparatus also includes a controller to control operation of the printer based on whether the marker is detected. The apparatus can also include an authorizer to determine whether the printer in which the pigment ink is installed is authorized to use the pigment ink having the marker. The controller of the apparatus is to control operation of the printer by transmitting a control signal to a print head processor to halt printing operations. The apparatus can additionally include a filter to deplete the vehicle component of the pigment component.Type: GrantFiled: July 31, 2014Date of Patent: March 27, 2018Assignee: Hewlett-Packard Development Company, L.P.Inventors: Steven B Elgee, Jefferson P Ward, Jayprakash C Bhatt
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Publication number: 20170183523Abstract: The present disclosure is drawn to a magenta pigment blend, a magenta ink, and a method of formulation a magenta pigment blend. The magenta pigment blend can be a first pigment including a solid solution of Pigment Violet 19 and Pigment Red 122, or Pigment Red 282; and a second pig-ment including Pigment Red 150. The weight ratio of the first pigment to the second pigment can be from 50:50 to 80:20 by pigment solids content.Type: ApplicationFiled: June 4, 2014Publication date: June 29, 2017Inventors: Larrie Deardurff, Jayprakash C. Bhatt, Cory J. Ruud, Sterling Chaffins, Matthew Thornberry
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Publication number: 20170183522Abstract: The present disclosure is drawn to a pigment-based inkjet ink and methods. The inkjet ink includes water; from 2 wt % to 9 wt % pigment solids; from 0.05 wt % to 2 wt % of an acetylenic diol non-ionic surfactant; from 0.05 wt % to 2 wt % of a second surfactant. The second surfactant can be a polysorbate having at least 50% lipophilic oleic acid groups and having an HLB value of less than 15, or a C12-C18 polyoxyethylene glycol ether having an ethylene oxide number less than 20, or a perfluoropolyether including a polyethylene glycol primary alcohol or diol. The inkjet ink also includes from 5 wt % to 50 wt % of an organic solvent system comprising triethylene glycol and a cyclic amide.Type: ApplicationFiled: June 4, 2014Publication date: June 29, 2017Applicant: Hewlett-Packard Development Company, L.P.Inventors: Sterling CHAFFINS, JR., Kevin P. DEKAM, Jayprakash C. BHATT, Larrie DEARDURFF, Cory J. RUUD, Matthew THORNBERRY
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Publication number: 20170066940Abstract: The present disclosure is drawn to inkjet inks and related methods. The inkjet ink includes water, from 5 wt % to 50 wt % of an organic solvent system, from 2 wt % to 9 wt % pigment solids, from 0.1 wt % to 3 wt % polyurethane binder, and from 0.4 wt % to 1.5 wt % of an oleyl or stearyl type polyoxyethylene glycol ether surfactant.Type: ApplicationFiled: June 4, 2014Publication date: March 9, 2017Inventors: Larrie Deardurff, Jayprakash C. Bhatt, Sterling Chaffins, Cory J. Ruud
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Publication number: 20170057267Abstract: Methods, apparatus, systems and articles of manufacture to control operation of a printer based on whether a marker is detected in a pigment ink are disclosed. Example apparatus include an optical sensor to detect a marker in a vehicle component of the pigment ink. The vehicle is depleted of a pigment component. The apparatus also includes a controller to control operation of the printer based on whether the marker is detected. The apparatus can also include an authorizer to determine whether the printer in which the pigment ink is installed is authorized to use the pigment ink having the marker. The controller of the apparatus is to control operation of the printer by transmitting a control signal to a print head processor to halt printing operations. The apparatus can additionally include a filter to deplete the vehicle component of the pigment component.Type: ApplicationFiled: July 31, 2014Publication date: March 2, 2017Inventors: Steven B Elgee, Jefferson P Ward, Jayprakash C Bhatt
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Patent number: 9068096Abstract: An ink is disclosed. The ink composition includes an ink vehicle, a colorant, and a fluorosurfactant, wherein the fluorosurfactant is a polymer having the general formula: wherein p is any integer, q is any integer, Z1 and Z2 are each fluorine or any functional group, and R1, R2, R3 are each fluorine, any alkyl group, or any functional group, and wherein R1, R2, R3, Z1, and Z2 are not all fluorine and the fluorosurfactant lowers the surface tension of the ink vehicle. A method for improving a property of an ink is also disclosed.Type: GrantFiled: July 28, 2011Date of Patent: June 30, 2015Assignee: Hewlett-Packard Development Company, L.P.Inventors: Sterling Chaffins, Kevin P. DeKam, Jayprakash C Bhatt, Mehrgan Khavari
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Patent number: 8795422Abstract: The present disclosure includes naphthalocyanine dyes or fused naphthalocyanine dyes represented by one of the general structures I to XV; inkjet ink formulations including the naphthalocyanine dyes; and a detection system (300) including the dyes.Type: GrantFiled: August 31, 2009Date of Patent: August 5, 2014Assignee: Hewlett-Packard Development Company, L.P.Inventors: Sivapackia Ganapathiappan, Jayprakash C. Bhatt
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Patent number: 8784955Abstract: A printed article with metallic luster and gold-like appearance that encompasses a printable media on which a printed feature has been formed with an ink composition. The ink composition contains iron oxide pigment particles that have an average particle 5 size in the range of about 3 to about 300 nm and the printable media contains a bottom supporting substrate and an ink-absorbing layer with pore diameters that are smaller than the average size of the iron oxide pigment particles. In such printed article, the ink composition forms onto the printable media a printed feature that has a thickness that is below about 300 nm.Type: GrantFiled: October 22, 2010Date of Patent: July 22, 2014Assignee: Hewlett-Packard Development Company, L.P.Inventors: Vladek Kasperchik, Jayprakash C. Bhatt, Vladimir Jakubek
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Patent number: 8778073Abstract: A phthalocyanine dye with extended conjugation includes one or both of a phthalocyanine component and a naphthalocyanine component and at least one water soluble substituent on an aryl group of the phthalocyanine dye. The extended conjugation of the phthalocyanine dye includes at least one benzene moiety of the component being one of (a) joined to an aryl group either indirectly using an alkylene linkage or directly, (b) joined to a benzene moiety of another of the components to form an oligomer of the components, and (c) a combination of (a) and (b). The extended conjugation shifts absorption of the phthalocyanine dye to greater than 800 nm.Type: GrantFiled: October 30, 2008Date of Patent: July 15, 2014Assignee: Hewlett-Packard Development Company, L.P.Inventors: Sivapackia Ganapathiappan, Zhang-Lin Zhou, Jayprakash C. Bhatt
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Publication number: 20140137766Abstract: An ink is disclosed. The ink composition includes an ink vehicle, a colorant, and a fluorosurfactant, wherein the fluorosurfactant is a polymer having the general formula: wherein p is any integer, q is any integer, Z1 and Z2 are each fluorine or any functional group, and R1, R2, R3 are each fluorine, any alkyl group, or any functional group, and wherein R1, R2, R3, Z1, and Z2 are not all fluorine and the fluorosurfactant lowers the surface tension of the ink vehicle. A method for improving a property of an ink is also disclosed.Type: ApplicationFiled: July 28, 2011Publication date: May 22, 2014Inventors: Sterling Chaffins, Kevin P. DeKam, Jayprakash C. Bhatt, Mehrgan Khavari
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Patent number: 8685154Abstract: The methods and compositions of the present invention provide an ink jet ink having a colorant, an aqueous vehicle, and water stable and water soluble phthalocyanine and/or naphthalocyanine dye chromophores.Type: GrantFiled: August 12, 2008Date of Patent: April 1, 2014Assignee: Hewlett-Packard Development Company, L.P.Inventors: Sivapackia Ganapathiappan, Zhang-Lin Zhou, Jayprakash C. Bhatt
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Patent number: 8668966Abstract: A method for producing printed articles that encompasses providing a first ink composition that contains metal oxide particles with an average particle size in the range of about 3 to about 300 nm; providing a second ink composition that contains colored pigments dispersed in an ink vehicle; providing a printable media having a bottom supporting substrate and an ink-absorbing layer with pore diameters that are smaller than the size of the metal oxide pigment particles and colored pigments; and sequentially applying, on the same print area, the first and the second ink compositions onto said printable media. Also disclosed herein are the printed articles obtained according to the present method.Type: GrantFiled: January 18, 2012Date of Patent: March 11, 2014Assignee: Hewlett-Packard Development Company, L.P.Inventors: Vladek Kasperchik, Vladimir Jakubek, Jayprakash C. Bhatt