Patents by Inventor John L. Pawlak

John L. Pawlak 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: 10702453
    Abstract: An exemplary method of printing medications on digestible substrates is described. Single component nonmagnetic toners with active pharmaceutical ingredients (API) embedded or “dissolved” in the toner are used. The binders for the toner are digestible. The “printing” process includes loading the single component non-magnetic toners from a sump to a donor roll and developing them either directly onto the substrate or through the use of an intermediate member. Traditional xerographic charge and exposure can be used to make the tablet “imprints”. Dosage is controlled through “solid area” or halftone development (when charge and exposure are used). The “printed” first layer may undergo cold or warm pressure fusing. This medicament layer is then subjected to another station to “print” a second layer of medical “tablet”. Multiple stations may be used to build up a complete personalized tablet. Optionally, a final station prints protective overcoat materials to finalize the “tablet”.
    Type: Grant
    Filed: November 14, 2012
    Date of Patent: July 7, 2020
    Assignee: Xerox Corporation
    Inventors: Shu Chang, John L. Pawlak, Michael L. Grande
  • Patent number: 9428622
    Abstract: A phase inversion emulsification process includes dissolving a polyester resin and a styrene/acrylate resin in an organic solvent to provide a solution, neutralizing the solution with a neutralizing agent, forming an emulsion by adding water after the neutralizing step and removing a portion of the organic solvent from the emulsion to provide a latex.
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: August 30, 2016
    Assignee: XEROX CORPORATION
    Inventors: Yanjia Zuo, Shigeng Li, Chieh-Min Cheng, John L. Pawlak
  • Patent number: 9280076
    Abstract: A toner includes a core including a homogenized mixture of a first polyester latex, a styrene/acrylate latex, and a compatibilizing agent latex that includes a graft polyester-styrene/acrylate copolymer and a shell that includes a polyester latex. A process includes (1) homogenizing a mixture to form a plurality of core particles, the mixture including a first polyester latex, a styrene/acrylate latex, and a compatibilizing agent latex comprising a graft polyester-styrene/acrylate copolymer and (2) adding a shell polyester latex to the plurality of core particles to form a plurality of core-shell structures.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: March 8, 2016
    Assignee: XEROX CORPORATION
    Inventors: Shigeng Li, Christopher Michael Wolfe, Yanjia Zuo, Randy Pheav Tin, John L. Pawlak, Jay Lee Schneider, Peter Nguyen, Jordan Frank, Chieh-Min Cheng
  • Patent number: 9280075
    Abstract: A process includes dissolving a styrene/acrylate resin in an organic solvent to form a first solution, dissolving at least one polyester resin in the first solution to form a second solution, neutralizing the second solution with a base to provide a neutralized solution, and adding a sufficient amount of water to the neutralized solution to form an emulsion. A latex particle includes a polyester resin and a styrene/acrylate resin dispersed within the latex particle, the surface of the latex particle is substantially the polyester resin. A toner includes a plurality of toner particles prepared from a latex, the particles of the latex including a polyester resin and a styrene/acrylate resin dispersed within each latex particle, the surface of each latex particle is substantially the polyester resin.
    Type: Grant
    Filed: October 29, 2014
    Date of Patent: March 8, 2016
    Assignee: XEROX CORPORATION
    Inventors: Yanjia Zuo, Yulin Wang, Shigeng Li, Peter Nguyen, Chieh-Min Cheng, John L. Pawlak
  • Patent number: 9187605
    Abstract: A process includes dissolving a polyester resin in an organic solvent to form a solution, the polyester resin has a latex-destabilizing cation, removing substantially all of the latex-destabilizing cation, neutralizing the solution of the polyester resin, adding a sufficient amount of water to the neutralized solution form an emulsion, and removing a portion of the organic solvent from the emulsion to form a latex of the polyester resin.
    Type: Grant
    Filed: July 18, 2013
    Date of Patent: November 17, 2015
    Assignee: XEROX CORPORATION
    Inventors: Yulin Wang, Karen Moffat, John L. Pawlak, Kevin F. Marcell, Steven M. Malachowski
  • Publication number: 20150025174
    Abstract: A process includes dissolving a polyester resin in an organic solvent to form a solution, the polyester resin has a latex-destabilizing cation, removing substantially all of the latex-destabilizing cation, neutralizing the solution of the polyester resin, adding a sufficient amount of water to the neutralized solution form an emulsion, and removing a portion of the organic solvent from the emulsion to form a latex of the polyester resin.
    Type: Application
    Filed: July 18, 2013
    Publication date: January 22, 2015
    Inventors: Yulin Wang, Karen Moffat, John L. Pawlak, Kevin F. Marcell, Steven M. Malachowski
  • Publication number: 20140134320
    Abstract: An exemplary method of printing medications on digestible substrates is described. Single component nonmagnetic toners with active pharmaceutical ingredients (API) embedded or “dissolved” in the toner are used. The binders for the toner are digestible. The “printing” process includes loading the single component non-magnetic toners from a sump to a donor roll and developing them either directly onto the substrate or through the use of an intermediate member. Traditional xerographic charge and exposure can be used to make the tablet “imprints”. Dosage is controlled through “solid area” or halftone development (when charge and exposure are used). The “printed” first layer may undergo cold or warm pressure fusing. This medicament layer is then subjected to another station to “print” a second layer of medical “tablet”. Multiple stations may be used to build up a complete personalized tablet. Optionally, a final station prints protective overcoat materials to finalize the “tablet”.
    Type: Application
    Filed: November 14, 2012
    Publication date: May 15, 2014
    Applicant: Xerox Corporation
    Inventors: Shu Chang, John L. Pawlak, Michael L. Grande
  • Patent number: 8293444
    Abstract: A toner that includes at least one polyester resin wherein the amount of free polyvalent acid monomer in the polyester resin is less than 4 mg/gram, and wherein the percentage of the at least one polyester resin with a MW less than 1500 is less than about 10%.
    Type: Grant
    Filed: June 24, 2009
    Date of Patent: October 23, 2012
    Assignee: Xerox Corporation
    Inventors: John L. Pawlak, Timothy L. Lincoln, William H. Hollenbaugh, Jr., Yuhua Tong, Brendan H. Williamson
  • Publication number: 20120189956
    Abstract: The present disclosure provides processes for producing toners. In embodiments, alkyl or alkyl ether sulfates are used in a solvent-free toner production process as surfactants to provide for higher parent particle charge without adversely affecting particle size, distribution control and circularity of the toner particles. The present disclosure also provides a new formulation and process for the emulsification of polyester resins to form nano-scale particles dispersed in water (latex) without the use of organic solvents by an extrusion process.
    Type: Application
    Filed: January 26, 2011
    Publication date: July 26, 2012
    Applicant: XEROX CORPORATION
    Inventors: Allan K. Chen, Santiago Faucher, John L. Pawlak, Joo T. Chung, Shigang S. Qiu, Michael S. Hawkins, Edward G. Zwartz, Abdisamed Sheik-Qasim, Melanie Lynn Davis
  • Patent number: 8168699
    Abstract: Various solvent-assisted extrusion processes are disclosed that are suitable for forming high yield, low coarse content, polyester latexes that may be utilized in forming a toner.
    Type: Grant
    Filed: June 21, 2010
    Date of Patent: May 1, 2012
    Assignee: Xerox Corporation
    Inventors: Timothy L. Lincoln, John L. Pawlak, Brian J. Andaya, Joo T. Chung, Joseph L. Leonardo, Santiago Faucher, Shigang Qiu
  • Patent number: 8133649
    Abstract: Toner particles are provided which may, in embodiments, include a high molecular weight branched or cross-linked polyester to decrease image gloss and to increase toner elasticity to prevent surface additives impaction. In embodiments, the toner particles may have a core-shell configuration, with the high molecular weight polyester in the core, the shell, or both.
    Type: Grant
    Filed: December 1, 2008
    Date of Patent: March 13, 2012
    Assignee: Xerox Corporation
    Inventors: Maria N. V. McDougall, Ke Zhou, Edward G. Zwartz, Daryl W. Vanbesien, John L. Pawlak, Paul J. Gerroir, Suxia Yang, Richard P. N. Veregin, Karen Ann Moffat
  • Publication number: 20110313079
    Abstract: Various solvent-assisted extrusion processes are disclosed that are suitable for forming high yield, low coarse content, polyester latexes that may be utilized in forming a toner.
    Type: Application
    Filed: June 21, 2010
    Publication date: December 22, 2011
    Applicant: XEROX CORPORATION
    Inventors: Timothy L. Lincoln, John L. Pawlak, Brian J. Andaya, Joo T. Chung, Joseph L. Leonardo, Santiago Faucher, Shigang Qiu
  • Publication number: 20110121599
    Abstract: An HVAC system includes a housing defining an auxiliary aperture, an occupant aperture, a circulation aperture, an inlet opening, a drip aperture, having at least one treatment device disposed therein, and defines a pre-treatment space between the inlet opening and the treatment device. An instrument panel has a façade and a backside opposite the façade and defines a passage extending from the façade to the backside and terminates at the housing. An auxiliary article module is disposed in the passage, abuts the housing and has walls defining an auxiliary article compartment, an auxiliary hole, an outer circulation hole, and a drip hole. The holes and their corresponding apertures are aligned and abutting for receiving air and liquid between the housing and the auxiliary article compartment. A circulation duct extends between the circulation aperture and the pre-treatment space for carrying air therebetween.
    Type: Application
    Filed: November 25, 2009
    Publication date: May 26, 2011
    Applicant: Delphi Technologies, Inc.
    Inventors: Gerald M. Goupil, JR., Mark W. Stevenson, John L. Pawlak, III
  • Publication number: 20100330486
    Abstract: A toner including at least one amorphous polyester, at least one crystalline polyester and at least one ester wax, wherein the linear polyester and the at least one ester wax have a difference in solubility parameter of from about 0.1 to about 1.7.
    Type: Application
    Filed: June 24, 2009
    Publication date: December 30, 2010
    Applicant: Xerox Corporation
    Inventors: Ke Zhou, Edward Graham Zwartz, Maria N.V. McDougall, John L. Pawlak, Paul Gerroir, Karen A. Moffat, Richard P.N. Veregin
  • Publication number: 20100330485
    Abstract: A toner that includes at least one polyester resin wherein the amount of free polyvalent acid monomer in the polyester resin is less than 4 mg/gram, and wherein the percentage of the at least one polyester resin with a Mw less than 1500 is less than about 10%.
    Type: Application
    Filed: June 24, 2009
    Publication date: December 30, 2010
    Applicant: Xerox Corporation
    Inventors: John L. PAWLAK, Timothy L. LINCOLN, William H. HOLLENBAUGH, JR., Yuhua TONG, Brendan H. WILLIAMSON
  • Publication number: 20100136472
    Abstract: Toner particles are provided which may, in embodiments, include a high molecular weight branched or cross-linked polyester to decrease image gloss and to increase toner elasticity to prevent surface additives impaction. In embodiments, the toner particles may have a core-shell configuration, with the high molecular weight polyester in the core, the shell, or both.
    Type: Application
    Filed: December 1, 2008
    Publication date: June 3, 2010
    Applicant: Xerox Corporation
    Inventors: Maria N.V. McDougall, Ke Zhou, Edward G. Zwartz, Daryl W. Vanbesien, John L. Pawlak, Paul J. Gerroir, Suxia Yang, Richard P.N. Veregin, Karen Ann Moffat
  • Publication number: 20080057232
    Abstract: The invention relates to an inkjet recording element that comprises, on a support, a porous hydrophilic image-receiving layer made by a subtractive method involving removal of water-insoluble polymeric latex from a coated non-porous layer to form the porous layer.
    Type: Application
    Filed: September 6, 2006
    Publication date: March 6, 2008
    Inventors: Jeffrey W. Leon, Hwei-Ling Yau, James R. Bennett, John L. Pawlak
  • Patent number: 7192680
    Abstract: This invention relates to a method of coating multiple layers on a support comprising a) taking a support; b) simultaneously coating on said support a chill settable layer and a non-chill settable layer; c) lowering the temperature of the layers to immobilize said layers; and d) drying said layers. It further relates to imaging elements made by this process.
    Type: Grant
    Filed: October 17, 2003
    Date of Patent: March 20, 2007
    Assignee: Eastman Kodak Company
    Inventors: Hwei-Ling Yau, James L. Johnston, Yongcai Wang, John L. Pawlak, Douglas H. Axtell
  • Patent number: 7166407
    Abstract: This invention relates to an imaging element comprising in order a support: a light sensitive image forming unit comprising microcapsules and a developer: an inner protective overcoat layer: and an outer protective overcoat layer.
    Type: Grant
    Filed: October 17, 2003
    Date of Patent: January 23, 2007
    Assignee: Eastman Kodak Company
    Inventors: Hwei-Ling Yau, John L. Pawlak, Douglas H. Axtell, James L. Johnston, Yongcai Wang
  • Patent number: 6816240
    Abstract: The present invention relates to an image-forming device for processing photosensitive media. The photosensitive media is of the type that includes microcapsules that encapsulate imaging material such as coloring material. The image-forming device includes a photobleaching system that is adapted to eliminate or minimize undesired coloration in a final print.
    Type: Grant
    Filed: July 17, 2003
    Date of Patent: November 9, 2004
    Assignee: Eastman Kodak Company
    Inventors: Alphonse D. Camp, John L. Pawlak