Patents by Inventor David Robert Zint

David Robert Zint 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: 6387856
    Abstract: Antimicrobial detergent compositions especially suitable for manual diswashing comprise 0.001-2% iodine ions complexed with an amphoteric surfactant, 5-90% uncomplexed surfactant selected from the group consisting of anionic surfactants, nonionic surfactants, amphoteric surfactants and mixture thereof, and 5-50% water. The detergent compositions have pH of 7-10. Preferably at least a portion of the iodine ions are added as an iodine in the form of a compound selected from the group consisting of KI, NaI, KOI, NaOI and Ca(0I)2.
    Type: Grant
    Filed: March 19, 2001
    Date of Patent: May 14, 2002
    Assignee: Procter & Gamble Company
    Inventors: Kofi Ofosu-Asante, Jeffrey Edward Boucher, Marcus Wayne Evans, David Robert Zint
  • Patent number: 6083893
    Abstract: The present invention provides a firm, mild, good performing, low-smear semi-solid or solid dishwashing product. The rheology of the dishwashing product is such that structural elements have been separated from functional elements to obtain best structure properties and in-use properties. By using an interlocking mesh of carboxylic acid and/or neutralized carboxylic acid fibers and/or platelets to provide a support structure, the semi-solid or solid dishwashing product can be loaded with superior performing dishcare materials (e.g., mild surfactants) and appearance enhancers without dependence on surfactant-water phase behavior to provide the support structure. As a result, the present dishwashing product is milder than semi-solid dishwashing products currently on the market. The support structure of the present product, and preferably the use of hygroscopic surfactants, provide a product with lower smear than current gel dishwashing products.
    Type: Grant
    Filed: September 29, 1997
    Date of Patent: July 4, 2000
    Assignee: The Proctor and Gamble Co.
    Inventors: David Robert Zint, Mark Leslie Kacher, Tony Pace, Robert Owens
  • Patent number: D870549
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: December 24, 2019
    Assignee: KOST USA, INC.
    Inventors: Russell Michael Logue, Stephen Thomas Overdeck, Allan Matthew Smith, David Robert Zint, Matthew Todd Hupp