Patents by Inventor Lloyd A. Lobo

Lloyd A. Lobo 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: 9371613
    Abstract: The present method is directed to an on-site process for conveying an emulsion of one or more substantially water-free fluids or compositions to a brownstock washing process. This enables real-time adjustment of wash aids and other process aids thus improving the overall operation of brownstock washing.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: June 21, 2016
    Assignee: Solenis Technologies, L.P.
    Inventors: Lloyd A Lobo, Todd S Bolton, Michael Mitchell, Kraig R Kent
  • Publication number: 20130220003
    Abstract: A method and an apparatus for measuring the depositability of particulate contaminants present in a pulp or paper mill fluid stream and evaluating interactions of such particulate contaminants with other contaminants collects the particulate contaminants on a suitable substrate, such as a plastic film coated with an adhesive or coated with organic contaminate, placed in contact with the pulp or paper mill fluid stream for at least five minutes up to several hours. The amount of contaminants collected on the substrate is quantified and evaluated by taking one or more scanned images of the substrate with a resolution of at least 2,000 dots per inch (DPI) and analyzing the scanned images with image analysis technique.
    Type: Application
    Filed: February 24, 2012
    Publication date: August 29, 2013
    Inventors: Mark Laurint, Lloyd Lobo, Catherine L. Kelly
  • Patent number: 8506757
    Abstract: Disclosed herein are hydrophobically-modified poly(aminoamides) useful as fixative detackifiers for stickies and pitch control in papermaking processes. These polymers are prepared via modification of amine-containing water-soluble poly(aminoamides) with reactive functional group-containing hydrophobic compounds. In particular, poly(aminoamides) may be modified, under appropriate reaction conditions, with long chain alkyl glycidyl ether, AKD (alkyl ketene dimer), ASA (alkyl succinyl anhydride), or Quab (3-chloro-2-hydroxypropyl-N,N,N-dimethylalkyl ammonium chloride). These novel polymers are effective in inhibiting deposition of organic contaminants in pulp and papermaking systems.
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: August 13, 2013
    Assignee: Hercules Incorporated
    Inventors: Qu-Ming Gu, Lloyd A. Lobo, Erin A. S. Doherty, Huai N. Cheng
  • Patent number: 8160305
    Abstract: A method and an apparatus for measuring the depositability of particulate contaminants present in a pulp or paper mill fluid stream and evaluating interactions of such particulate contaminants with other contaminants collects the particulate contaminants on a suitable substrate, such as a plastic film coated with an adhesive or coated with organic contaminate, placed in contact with the pulp or paper mill fluid stream for at least five minutes up to several hours. The amount of contaminants collected on the substrate is quantified and evaluated by taking one or more scanned images of the substrate with a resolution of at least 2,000 dots per inch (DPI) and analyzing the scanned images with image analysis technique.
    Type: Grant
    Filed: November 24, 2008
    Date of Patent: April 17, 2012
    Assignee: Hercules Incorporated
    Inventors: Mark Laurint, Lloyd Lobo, Catherine Kelly
  • Publication number: 20100147476
    Abstract: Disclosed herein are hydrophobically-modified poly(aminoamides) useful as fixative detackifiers for stickies and pitch control in papermaking processes. These polymers are prepared via modification of amine-containing water-soluble poly(aminoamides) with reactive functional group-containing hydrophobic compounds. In particular, poly(aminoamides) may be modified, under appropriate reaction conditions, with long chain alkyl glycidyl ether, AKD (alkyl ketene dimer), ASA (alkyl succinyl anhydride), or Quab (3-chloro-2-hydroxypropyl-N,N,N-dimethylalkyl ammonium chloride). These novel polymers are effective in inhibiting deposition of organic contaminants in pulp and papermaking systems.
    Type: Application
    Filed: November 18, 2009
    Publication date: June 17, 2010
    Inventors: Qu-Ming GU, Lloyd A. Lobo, Erin A. S. Doherty, Huai N. Cheng
  • Patent number: 7696270
    Abstract: The present invention is method of manufacturing a wax dispersion. The method includes forming a solution of a solvent and a dispersant, the dispersant being a polymer of partially or fully hydrogenated styrene butadiene wherein the styrene to butadiene ratio is from 20 to 90. Wax is added to the solution to form a slurry. The particle size of the wax is reduced through communition of the slurry. The wax dispersion can be sued for the manufacture of toner particles.
    Type: Grant
    Filed: June 22, 2006
    Date of Patent: April 13, 2010
    Assignee: Eastman Kodak Company
    Inventors: Lloyd A. Lobo, Lori A. VanEpps
  • Patent number: 7687213
    Abstract: The present invention provides a custom color toner having a first particle size. Colored particles are attached to the surface of the base toner in an amount sufficient to provide a predetermined color to the base toner. The colored particles have a second particle size less than the first particle size.
    Type: Grant
    Filed: August 28, 2006
    Date of Patent: March 30, 2010
    Assignee: Eastman Kodak Company
    Inventors: Lloyd A. Lobo, Eric C. Stelter
  • Patent number: 7655375
    Abstract: The present invention is a method for the preparation of electrostatographic toner including the following steps. A polymer material is dissolved in an organic solvent to form an organic phase. The organic phase is dispersed in an aqueous phase that includes a particulate stabilizer and a salt including an anion selected from chloride, oxychloride, sulfate, perchlorate, nitrate, dihydrogen phosphate, lactate, trifluoromethylsulfonate, and trifluromethylhydrate and a cation selected from aluminum, iron (III), tin (II) and zirconium (IV), to form a dispersion. The dispersion is homogenized. The organic solvent is evaporated from the dispersion and the resultant product is recovered, washed and dried. In an alternate method the salt is added directly to the dispersion.
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: February 2, 2010
    Assignee: Eastman Kodak Company
    Inventors: Xiqiang Yang, Dinesh Tyagi, Lloyd A. Lobo, Patrick M. Lambert, Sandra G. Taft
  • Patent number: 7550244
    Abstract: The present invention provides a method for the preparation of a UV curable electrostatographic toner. The process includes the steps of dispersing a polymeric material and a UV curable material and a UV photoinitiator in an organic solvent to form an organic phase. The organic phase is dispersed in an aqueous phase containing a particulate stabilizer to form a dispersion. The dispersion is homogenized and the organic solvent is removed from the dispersed particles in the dispersion which are then recovered.
    Type: Grant
    Filed: June 14, 2006
    Date of Patent: June 23, 2009
    Assignee: Eastman Kodak Company
    Inventors: Xin Jin, Lloyd A. Lobo, Dinesh Tyagi
  • Patent number: 7550240
    Abstract: This invention relates to electrophotographic elements containing a layer formed from coating compositions containing a mixture of polymeric binders, including a polyvinyl butyral and a polyester ionomer and a crystalline mixture of unsubstituted titanyl phthalocyanine pigment, titanyl phthalocyanine pigments or mixtures thereof dispersed in the mixture. More particularly the invention relates to electrophotographic elements containing photoconductive layers which are especially useful for forming a photoconductive layer that is very uniform and highly absorptive at relatively thin coverage with good inter layer adhesion. The electrophotographic elements produced using this coating composition are particularly suited for high quality applications such as providing copy images with very low grain.
    Type: Grant
    Filed: May 28, 2004
    Date of Patent: June 23, 2009
    Assignee: Eastman Kodak Company
    Inventors: Michel F. Molaire, Jane R. Cowdery-Corvan, Lloyd Lobo, Theodore Zubil, Edward T. Miskinis, Dennis R. Fronheiser
  • Publication number: 20090141963
    Abstract: A method and an apparatus for measuring the depositability of particulate contaminants present in a pulp or paper mill fluid stream and evaluating interactions of such particulate contaminants with other contaminants collects the particulate contaminants on a suitable substrate, such as a plastic film coated with an adhesive or coated with organic contaminate, placed in contact with the pulp or paper mill fluid stream for at least five minutes up to several hours. The amount of contaminants collected on the substrate is quantified and evaluated by taking one or more scanned images of the substrate with a resolution of at least 2,000 dots per inch (DPI) and analyzing the scanned images with image analysis technique.
    Type: Application
    Filed: November 24, 2008
    Publication date: June 4, 2009
    Applicant: Hercules Inc.
    Inventors: Mark Laurint, Lloyd Lobo, Catherine L. Kelly
  • Publication number: 20080145780
    Abstract: The present invention is a method for the preparation of electrostatographic toner including the following steps. A polymer material is dissolved in an organic solvent to form an organic phase. The organic phase is dispersed in an aqueous phase that includes a particulate stabilizer and a salt including an anion selected from chloride, oxychloride, sulfate, perchlorate, nitrate, dihydrogen phosphate, lactate, trifluoromethylsulfonate, and trifluromethylhydrate and a cation selected from aluminum, iron (III), tin (II) and zirconium (IV), to form a dispersion. The dispersion is homogenized. The organic solvent is evaporated from the dispersion and the resultant product is recovered, washed and dried. In an alternate method the salt is added directly to the dispersion.
    Type: Application
    Filed: December 15, 2006
    Publication date: June 19, 2008
    Inventors: Xiqiang Yang, Dinesh Tyagi, Lloyd A. Lobo, Patrick M. Lambert, Sandra G. Taft
  • Publication number: 20080050667
    Abstract: The present invention provides a custom color toner having a first particle size. Colored particles are attached to the surface of the base toner in an amount sufficient to provide a predetermined color to the base toner. The colored particles have a second particle size less than the first particle size.
    Type: Application
    Filed: August 28, 2006
    Publication date: February 28, 2008
    Inventors: Lloyd A. Lobo, Eric C. Stelter
  • Publication number: 20070299191
    Abstract: The present invention is method of manufacturing a wax dispersion. The method includes forming a solution of a solvent and a dispersant, the dispersant being a polymer of partially or fully hydrogenated styrene butadiene wherein the styrene to butadiene ratio is from 20 to 90. Wax is added to the solution to form a slurry. The particle size of the wax is reduced through communition of the slurry. The wax dispersion can be sued for the manufacture of toner particles.
    Type: Application
    Filed: June 22, 2006
    Publication date: December 27, 2007
    Inventors: Lloyd A. Lobo, Lori A. VanEpps
  • Publication number: 20070292800
    Abstract: The present invention provides a method for the preparation of a UV curable electrostatographic toner. The process includes the steps of dispersing a polymeric material and a UV curable material and a UV photoinitiator in an organic solvent to form an organic phase. The organic phase is dispersed in an aqueous phase containing a particulate stabilizer to form a dispersion. The dispersion is homogenized and the organic solvent is removed from the dispersed particles in the dispersion which are then recovered.
    Type: Application
    Filed: June 14, 2006
    Publication date: December 20, 2007
    Inventors: Xin Jin, Lloyd A. Lobo, Dinesh Tyagi
  • Patent number: 7273570
    Abstract: The present invention is a method of manufacturing polymer particles. The method includes providing an oil in water emulsion, wherein the oil phase comprises a volatile solvent and at least one water insoluble polymer. The volatile solvent has a solubility of not more than 10% in water and the water insoluble polymer has a weight average molecular weight of at least 2000. The water insoluble polymer is soluble in the volatile solvent. The emulsion is supplied to a rotating surface of a rotating surface reactor. The temperature of the rotating surface is maintained at the boiling point of said solvent or greater. The rotating surface of the reactor spins at a speed sufficient to cause the emulsion to spread over the rotating surface as a continuously flowing thin film wherein a vapor phase containing the volatile solvent is removed. The water insoluble polymer particles are then collected as a slurry of polymer particles and water.
    Type: Grant
    Filed: July 8, 2005
    Date of Patent: September 25, 2007
    Assignee: Eastman Kodak Company
    Inventors: Stewart W. Blair, Lloyd A. Lobo, Tomas G. McHugh
  • Publication number: 20070149652
    Abstract: The present invention is a method of making polymeric particles having a predetermined and controlled size and size distribution. The method includes dissolving a polymer in a solvent to form a solution wherein the solvent is substantially immiscible with water. A suspension of small droplets of the solution is formed in water containing a water soluble promoter and a stabilizer comprising a surfactant free copolymer by high shear agitation. The stabilizer includes (i) about 55 to about 95 percent by weight, based on total monomer weight, of an addition polymerizable p-tert-butyl styrene and/or (ii) about 5 to about 45 percent by weight, based on total monomer weight, of an addition polymerizable ionic monomer. The solvent is removed from the droplets and the solidified polymer particles are separated from the water. The present invention as provides polymer particles having a core of polymer coated with a layer of smaller particles of a copolymer of the stabilizer described in the method.
    Type: Application
    Filed: December 28, 2005
    Publication date: June 28, 2007
    Inventors: Hichang Yoon, Tina Barbata, Lloyd Lobo
  • Publication number: 20070007677
    Abstract: The present invention is a method of manufacturing polymer particles. The method includes providing an oil in water emulsion, wherein the oil phase comprises a volatile solvent and at least one water insoluble polymer. The volatile solvent has a solubility of not more than 10% in water and the water insoluble polymer has a weight average molecular weight of at least 2000. The water insoluble polymer is soluble in the volatile solvent. The emulsion is supplied to a rotating surface of a rotating surface reactor. The temperature of the rotating surface is maintained at the boiling point of said solvent or greater. The rotating surface of the reactor spins at a speed sufficient to cause the emulsion to spread over the rotating surface as a continuously flowing thin film wherein a vapor phase containing the volatile solvent is removed. The water insoluble polymer particles are then collected as a slurry of polymer particles and water.
    Type: Application
    Filed: July 8, 2005
    Publication date: January 11, 2007
    Inventors: Stewart Blair, Lloyd Lobo, Tomas McHugh
  • Publication number: 20060204885
    Abstract: A method for preparing a coating solution containing a cocrystallized titanyl phthalocyanine-titanyl fluorophthalocyanine, the method comprising: dry milling a charge-generation pigment or mixtures of charge-generation pigments; increasing the amorphousness of the pigment mixture as determined by X-ray crystallography using X-radiation characteristic of Cu K? at a wavelength of 1.
    Type: Application
    Filed: April 30, 2004
    Publication date: September 14, 2006
    Inventors: Michel Molaire, Lloyd Lobo
  • Publication number: 20050266330
    Abstract: This invention relates to electrophotographic elements containing a layer formed from coating compositions containing a mixture of polymeric binders, including a polyvinyl butyral and a polyester ionomer and a crystalline mixture of unsubstituted titanyl phthalocyanine pigment, titanyl phthalocyanine pigments or mixtures thereof dispersed in the mixture. More particularly the invention relates to electrophotographic elements containing photoconductive layers which are especially useful for forming a photoconductive layer that is very uniform and highly absorptive at relatively thin coverage with good inter layer adhesion. The electrophotographic elements produced using this coating composition are particularly suited for high quality applications such as providing copy images with very low grain.
    Type: Application
    Filed: May 28, 2004
    Publication date: December 1, 2005
    Inventors: Michel Molaire, Jane Cowdery-Corvan, Lloyd Lobo, Theodore Zubil, Edward Miskinis, Dennis Fronheiser