Patents by Inventor Ivan M. Tuhill

Ivan M. Tuhill 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).

  • Transparent oil-in-water microemulsion flavor concentrate
    Patent number: 5320863
    Abstract: Described is a stable transparent oil-in-water microemulsion concentrate consisting essentially of:(i) water;(ii) one or more hydrophobic flavor or fragrance oils; and(iii) one or more surfactantswherein the mixing ratio of the water, oil and surfactant is, referring to FIG. 1A, within the range surrounded by the lines connecting points A, B and C of FIG. 1A. Also described is a process for preparing such transparent microemulsion compositions. Also described is a mouthwash containing said transparent microemulsion compositions and a process for preparing same. Also described is a perfume composition containing said transparent microemulsion compositions and the process for preparing same.
    Type: Grant
    Filed: October 1, 1993
    Date of Patent: June 14, 1994
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Siew L. Chung, Chee-Teck Tan, Ivan M. Tuhill, Lewis G. Scharpf
  • Transparent oil-in-water microemulsion flavor or fragrance concentrate, process for preparing same, mouthwash or perfume composition containing said transparent microemulsion concentrate, and process for preparing same
    Patent number: 5283056
    Abstract: Described is a stable transparent oil-in-water microemulsion concentrate consisting essentially of:(i) water;(ii) one or more hydrophobic flavor or fragrance oils; and(iii) one or more surfactantswherein the mixing ratio of the water, oil and surfactant is, referring to FIG. 1A, within the range surrounded by the lines connecting points A, B and C of FIG. 1A. Also described is a process for preparing such transparent microemulsion compositions. Also described is a mouthwash containing said transparent microemulsion compositions and a process for preparing same. Also described is a perfume composition containing said transparent microemulsion compositions and the process for preparing same.
    Type: Grant
    Filed: July 1, 1993
    Date of Patent: February 1, 1994
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Siew L. Chung, Chee-Tack Tan, Ivan M. Tuhill, Lewis G. Scharpf