Patents by Inventor Jan T. Van Elst

Jan T. Van Elst 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).

  • p-methylenedioxyphenyl propionitrile derivatives, process for producing same, intermediates used in said process and organoleptic uses of said derivatives and intermediates
    Patent number: 5321144
    Abstract: Described are p-methylenedioxyphenyl propionitrile and propiohydroxylamine derivatives defined according to the generic structure: ##STR1## wherein Z.sub.1 represents the moiety: ##STR2## and the moiety: ##STR3## and R.sub.1 is hydrogen or methyl and also having the generic structure: ##STR4## wherein X is HSO.sub.4.sup.-- ; SO.sub.4 ; .sup.= Cl.sup.-- ; Br.sup.-- ; PO.sub.4.sup..dbd. ; H.sub.2 PO.sub.4.sup.-- ; and HPO.sub.4.sup.= ; and the process of preparing these compounds.
    Type: Grant
    Filed: July 16, 1993
    Date of Patent: June 14, 1994
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Anubhav P. S. Narula, John J. De Virgilio, Charles E. J. Beck, Marie R. Hanna, Jan T. Van Elst
  • P-methylenedioxyphenyl propionitrile derivatives, process for producing same, intermediates used in said process and organoleptic uses of said derivatives and intermediates
    Patent number: 5300488
    Abstract: Described are p-methylenedioxyphenyl propionitrile and propiohydroxylamine derivatives defined according to the generic structure: ##STR1## wherein Z.sub.1 represents the moiety: ##STR2## and the moiety: ##STR3## and R.sub.1 is hydrogen or methyl and also having the generic structure: ##STR4## wherein X is HSO.sub.3.sup.- ; SO.sub.4 ;=Cl.sup.- ; PO.sub.4.sup..tbd. ; H.sub.2 PO.sub.4.sup.- ; and HPO.sub.4.sup.=. The p-methylenedioxyphenyl propionitrile and propiohydroxylamine derivatives having the structures: ##STR5## have useful organoleptic properties in the perfumery area. Also described are processes for preparing such p-methylenedioxyphenyl propionitrile and propiohydroxylamine derivatives. The compounds defined according to the structure: ##STR6## are useful intermediates in such processes. The subgenus defined according to the structure: ##STR7## covers novel compounds.
    Type: Grant
    Filed: July 16, 1993
    Date of Patent: April 5, 1994
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Anubhav P. S. Narula, John J. De Virgilio, Charles E. J. Beck, Marie R. Hanna, Jan T. Van Elst
  • p-Methylenedioxyphenyl propionitrile derivatives, process for producing same, intermediates used in said process and organoleptic uses of said derivatives and intermediates
    Patent number: 5274133
    Abstract: Described are p-methylenedioxyphenyl propionitrile and prophiohydroxylamine derivatives defined according to the generic structure: ##STR1## wherein Z.sub.1 represents the moiety: ##STR2## and the moiety: ##STR3## and R.sub.1 is hydrogen or methyl and also having the generic structure; ##STR4## wherein X is HSO.sub.4.sup.- ; SO.sub.4 ; .sup.= Cl.sup.- ; BR.sup.- ; PO.sub.4 ; H.sub.2 PO.sub.4.sup.- ; and HPO.sub.4.
    Type: Grant
    Filed: January 21, 1993
    Date of Patent: December 28, 1993
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Anubhav P. S. Narula, John J. De Virgilio, Charles E. J. Beck, Marie R. Hanna, Jan T. Van Elst
  • 3,5,5-trimethylhexanal oxime and organoleptic uses thereof
    Patent number: 5066641
    Abstract: Described is 3,5,5-trimethylhexanal oxime defined according to the structure: ##STR1## and organoleptic uses thereof in augmenting or enhancing the aroma of perfume compositions, colognes and perfumed articles including but not limited to solid or liquid anionic, cathionic, nonionic and zwitterionic detergents, perfume polymers, fabric softener compositions, fabic softener articles, cosmetic powders and hair preparations.
    Type: Grant
    Filed: September 27, 1990
    Date of Patent: November 19, 1991
    Assignee: International Flavors & Fragrances Inc.
    Inventors: Anubhav P. S. Narula, John J. De Virgilio, Jan T. Van Elst