Patents by Inventor Igor A. Pelse

Igor A. Pelse 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).

  • 3-Furyl beta-chalcogencycloaklyl sulfides
    Patent number: 3996250
    Abstract: 3-Furyl beta-chalcogencycloaklyl sulfides having the structure: ##STR1## wherein X is a chalcogen selected from the group consisting of oxygen and sulfur; and R.sub.2 and R.sub.3 are each selected from the group consisting of methyl and hydrogen, at least one of R.sub.2 or R.sub.3 being methyl, the moieties X and S being in a trans relationship, such 3-furyl beta-chalcogencycloalkyl sulfides being useful in altering, modifying or enhancing the organoleptic properties of foodstuffs.
    Type: Grant
    Filed: September 17, 1975
    Date of Patent: December 7, 1976
    Assignee: International Flavors & Fragrances Inc.
    Inventors: William J. Evers, Igor A. Pelse, Manfred Hugo Vock
  • Methods for using 3-furyl .beta.-chalocogenalkyl sulfides for altering the organoleptic properties of foodstuffs, and compositions of matter containing 3-furyl .beta.-chalcogenalkyl sulfides
    Patent number: 3982038
    Abstract: 3-Furyl .beta.-chalcogenalkyl sulfides having the structure: ##SPC1##Wherein X is a chalcogen selected from the group consisting of oxygen and sulfur; R.sub.2 and R.sub.3 are each selected from the group consisting of methyl and hydrogen, at least one of R.sub.2 and R.sub.3 being methyl; and R.sub.4 and R.sub.5, taken separately, are each methyl, or R.sub.4 and R.sub.5 taken together are tetramethylene, and when R.sub.4 and R.sub.5 taken together are tetramethylene X and S are in a trans relationship, are indicated to be useful in altering, modifying or enhancing the taste and/or aroma of foodstuffs.
    Type: Grant
    Filed: September 17, 1975
    Date of Patent: September 21, 1976
    Assignee: International Flavors & Fragrances Inc.
    Inventors: William J. Evers, Igor A. Pelse, Manfred Hugo Vock
  • 3-Furyl chalcogen alkyl sulfides
    Patent number: 3933863
    Abstract: 3-Furyl beta-chalcogenalkyl sulfides having the structure: ##SPC1##Wherein X is a chalcogen selected from the group consisting of oxygen and sulfur; R.sub.2 and R.sub.3 are each selected from the group consisting of methyl and hydrogen, at least one of R.sub.2 or R.sub.3 being methyl; and R.sub.4 and R.sub.5, taken separately, are each methyl, or R.sub.4 and R.sub.
    Type: Grant
    Filed: January 21, 1975
    Date of Patent: January 20, 1976
    Assignee: International Flavors & Fragrances Inc.
    Inventors: William J. Evers, Igor A. Pelse, Manfred Hugo Vock