Patents by Inventor Jacob Pypker

Jacob Pypker 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).

  • Mercapto alcohols and mercaptoalkyl esters
    Patent number: 4053656
    Abstract: New compounds having the formula ##STR1## wherein R.sub.1 represents a hydrocarbon moiety having from 1 to 7 carbon toms, R.sub.2 is hydrogen, methyl or ethyl, and R.sub.3 is hydrogen, formyl or acetyl. The compounds are useful in the preparation, modification and intensification of a great variety of flavor and perfume compositions.
    Type: Grant
    Filed: May 6, 1976
    Date of Patent: October 11, 1977
    Assignees: Polak's Frutal Works B.V., Douwe Egberts Koninklijke Tabaksfabriek-Koffiebranderijen-Theehandel N.V.
    Inventors: Jan Stoffelsma, Jacob Pypker
  • Mercapto alcohols and mercaptoalkyl esters
    Patent number: 3970689
    Abstract: New compounds having the formula ##EQU1## wherein R.sub.1 represents a hydrocarbon moiety having from 1 to 7 carbon toms, R.sub.2 is hydrogen, methyl or ethyl, and R.sub.3 is hydrogen, formyl or acetyl. The compounds are useful in the preparation, modification and intensification of a great variety of flavor and perfume compositions.
    Type: Grant
    Filed: April 4, 1973
    Date of Patent: July 20, 1976
    Assignees: Polak's Frutal Works B.V., Douwe Egberts Koninklijke Tabaksfabriek-Koffiebranderijen-Theehandel N.V.
    Inventors: Jan Stoffelsma, Jacob Pypker