Patents by Inventor Lisa Hahn

Lisa Hahn 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: 7084103
    Abstract: The invention described herein is a phenolic having a structure represented by formula (I): wherein n is an integer of 20 to 200, R1 is an unsaturated hydrocarbon chain, and R2 is selected from the group consisting of a hydrogen atom and —OCH2CH2O(CH2CH2O)nCH2CH2OH. Also described are methods of preparing the compound, pigment dispersions containing the compound, ink and paint compositions containing the compound and methods related thereto.
    Type: Grant
    Filed: June 26, 2003
    Date of Patent: August 1, 2006
    Assignee: Palmer International, Inc.
    Inventors: Perry Springsted, Lisa Hahn, Gregory P. Tzap
  • Publication number: 20050245630
    Abstract: The present invention relates generally to radiation-curable ink formulations, and particularly, but not by way of limitation, to a family of radiation-curable ink formulations specifically for lithographic printing applications. The inventive ink formulations are based on multifunctional acrylate resins formed by the reaction of acrylate monomers and oligomers with ?-keto esters (e.g., acetoacetates), ?-diketones (e.g., 2,4-pentanedione), ?-keto amides (e.g., acetoacetanilide, acetoacetamide), and/or other ?-dicarbonyl compounds that can participate in Michael addition reactions.
    Type: Application
    Filed: April 30, 2004
    Publication date: November 3, 2005
    Applicant: Ashland Inc.
    Inventors: Sridevi Narayan-Sarathy, Lisa Hahn
  • Publication number: 20050080162
    Abstract: The present invention relates generally to radiation-curable ink formulations, and particularly, but not by way of limitation, to a family of radiation-curable ink formulations specifically for flexographic and screen printing applications. The inventive ink formulations are based on multifunctional acrylate resins formed by the reaction of acrylate monomers and oligomers with ?-keto esters (e.g., acetoacetates), ?-diketones (e.g., 2,4-pentanedione), ?-keto amides (e.g., acetoacetanilide, acetoacetamide), and/or other ?-dicarbonyl compounds that can participate in Michael addition reactions.
    Type: Application
    Filed: October 14, 2003
    Publication date: April 14, 2005
    Applicant: Ashland Inc.
    Inventors: Sridevi Narayan-Sarathy, Lisa Hahn
  • Publication number: 20050080202
    Abstract: The invention detailed herein comprises a family of multifunctional acrylate oligomers which are useful as pigment grinding vehicles for use in radiation-curable coating formulations. The multifunctional acrylate resins are formed by the reaction of acrylate monomers and oligomers with ?-keto esters (e.g., acetoacetates), ?-diketones (e.g., 2,4-pentanedione), ?-keto amides (e.g., acetoacetanilide, acetoacetamide), and/or other ?-dicarbonyl compounds or Michael “donors” that can participate in the Michael addition reaction. These resin vehicles have a built-in chromophore that enables ink formulations made from their dispersions to cure under standard UV-cure conditions with significantly less photoinitiator than commercial formulations. The resins also exhibit excellent pigment wetting characteristics and can be designed to function as a single dispersion vehicle for different pigments and different ink applications such as screen, flexographic, and lithographic printing.
    Type: Application
    Filed: October 14, 2003
    Publication date: April 14, 2005
    Applicant: Ashland Inc.
    Inventors: Sridevi Narayan-Sarathy, Lisa Hahn, Michael Gould