Patents by Inventor Nicolaas L. J. M. Broekhof

Nicolaas L. J. M. Broekhof 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).

  • Cyclohexane-, cyclohexene- and cyclohexadiene-, bicyclo (2.2.1)-heptenecarboxylic acid esters, and also perfume compositions and perfumed products which contain one or more of said compounds as perfume component
    Patent number: 4843061
    Abstract: Perfume compositions containing at least one compound having the formula 1 ##STR1## wherein said compounds have the substituents as defined in claim 1. Perfumed compositions and perfumed products containing them are characterized by flowery, fruity, green and spicy odors, sometimes accompanied by a slight minty nuance with animal and/or wood notes in the after-odor.
    Type: Grant
    Filed: June 9, 1987
    Date of Patent: June 27, 1989
    Assignee: Naarden International N.V.
    Inventors: Nicolaas L. J. M. Broekhof, Jan G. Witteveen, Antonius J. A. van der Weerdt
  • Perfume compositions and perfumed articles and materials which contain derivatives of m-cresol as perfume component
    Patent number: 4689175
    Abstract: Perfume compositions and perfumed products characterized by a content of one or more fragrances which have a very natural leather odor and correspond to the formula ##STR1## wherein one of the two symbols R.sub.1 and R.sub.2 represents a methyl group and the other a hydrogen atom or both symbols represent a hydrogen atom and R.sub.3 represents a n-propyl, allyl, 1-propenyl-, sec.butyl, 1-buten-3-yl, isobutyl or 2-methylpropen-3-yl group.
    Type: Grant
    Filed: August 13, 1986
    Date of Patent: August 25, 1987
    Assignee: Naarden International N.V.
    Inventor: Nicolaas L. J. M. Broekhof
  • Perfume composition and perfumed products which contain one or more O-alkoxyphenols as perfume component
    Patent number: 4650604
    Abstract: Perfume compositions and perfumed products characterized by a content of one or more fragrances which have the characteristic odor of vanilla and correspond to the formula ##STR1## wherein R.sub.1 or R.sub.2 represents a hydrogen atom and the other symbol an ethyl or propyl group and R.sub.3 represents a methyl or ethyl group.
    Type: Grant
    Filed: October 16, 1985
    Date of Patent: March 17, 1987
    Assignee: Naarden International N. V.
    Inventors: Nicolaas L. J. M. Broekhof, Antonius J. A. van der Weerdt
  • Perfume compositions and perfumed articles containing dihydro- and/or tetrahydro-naphthols as fragrance material
    Patent number: 4643844
    Abstract: Perfume compositions and perfumed articles containing dihydro- and/or tetrahydro-1-naphthol derivatives of the formula ##STR1## wherein the dotted lines represent carbon-carbon single or double bonds with the proviso that no more than one of them is a double bond and wherein R.sub.1, R.sub.2 and R.sub.3 independently are methyl groups or hydrogen atoms; said naphthol derivatives have a very natural leather-like odor.
    Type: Grant
    Filed: February 26, 1985
    Date of Patent: February 17, 1987
    Assignee: 501 Naarden International N.V.
    Inventors: Nicolaas L. J. M. Broekhof, Antonius J. A. van der Weerdt, Jogchum Hofma