Patents by Inventor David A. Gerstenhaber

David A. Gerstenhaber 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).

  • Publication number: 20230243102
    Abstract: A composition for improving softness of tissue and/or towel products includes lignocellulosic fibers; water; and a hydrophobic softener that includes the reaction product of: (1) at least one di- and/or poly-amine, (2) at least one chain extender having at least two carboxyl groups; and (3) at least one hydrophobic end-capper. The reaction product comprises a hydrophobic substitution of at least about 25 mole percent of the hydrophobic end-capper based on a total number of moles of active amine sites of the reaction product. In addition, a method of improving softness of tissue and/or towel products includes combining the lignocellulosic fibers, the water, and the hydrophobic softener; and creating the tissue and/or towel products.
    Type: Application
    Filed: January 31, 2023
    Publication date: August 3, 2023
    Applicant: SOLENIS TECHNOLOGIES, L.P.
    Inventors: Michael A. Evans, Clement L. Brungardt, Patrick R. Kovacs, David A. Gerstenhaber
  • Patent number: 11105046
    Abstract: The present disclosure provides for a composition and method of producing a creped paper and the creped paper products made using this method. The method includes treating the surface of a wet fibrous web and/or surface of a Yankee drum dryer or cylinder with compositions containing a combination of a polyaminosilicone/polyaminosilicone block copolymer/surfactant and optionally one or more creping aids.
    Type: Grant
    Filed: March 20, 2018
    Date of Patent: August 31, 2021
    Assignee: Solenis Technologies, L.P.
    Inventors: David A. Gerstenhaber, Timothy F. Patterson, Philip Michael Viger, Samuel Jeremy Mitton
  • Publication number: 20180274175
    Abstract: The present disclosure provides for a composition and method of producing a creped paper and the creped paper products made using this method. The method includes treating the surface of a wet fibrous web and/or surface of a Yankee drum dryer or cylinder with compositions containing a combination of a polyaminosilicone/polyaminosilicone block copolymer/surfactant and optionally one or more creping aids.
    Type: Application
    Filed: March 20, 2018
    Publication date: September 27, 2018
    Inventors: David A. Gerstenhaber, Timothy F. Patterson
  • Patent number: 7960497
    Abstract: The embodiments of the process of the present invention relate to the preparation of alkyl ketene dimers (AKD), where the process combines at least one polyamine with a fatty acid chloride in a molar ratio of less than one mole of polyamine to one mole of fatty acid chloride thereby forming an alkyl ketene dimer/amine salt that is subsequently separated into an organic dimer layer and an aqueous salt layer.
    Type: Grant
    Filed: January 3, 2007
    Date of Patent: June 14, 2011
    Assignee: Hercules Incorporated
    Inventor: David A. Gerstenhaber
  • Publication number: 20070173579
    Abstract: The embodiments of the process of the present invention relate to the preparation of alkyl ketene dimers (AKD), where the process combines at least one polyamine with a fatty acid chloride in a molar ratio of less than one mole of polyamine to one mole of fatty acid chloride thereby forming an alkyl ketene dimer/amine salt that is subsequently separated into an organic dimer layer and an aqueous salt layer.
    Type: Application
    Filed: January 3, 2007
    Publication date: July 26, 2007
    Inventor: David Gerstenhaber